Hifonics Sampson Owner's manual

XXV EDITION HIGH PERFORMANCE AMPLIFIERS

INDEX PAGE

As Hifonics celebrates its 25th anniversary of producing the finest high end car audio products available we would like to thank

you for your continued support.

The GEN XXV Series range of products have been designed to a very high level of performance, with features unavailable in any

other product.

All of the amplifiers have variable crossovers built in, with added touches such as Subsonic Filter, Parametric Bass Equalization,

Phase Shift, Balanced Line Input and a Bass Remote Control Module that allows bass control from reach of the drivers seat.

To insure years of listening pleasure, all amplifiers have a built in diagnostic mode that will detect shorted speaker leads, low

impedance, dangerous high temperatures, DC shorts and will shut down the amp to help prevent serious damage. A new feature

for this series is the Clipping LED indicator. This indicator is located on the amplifier end panel and Bass Remote Control Module.

This LED alerts the user when the amp reaches soft clipping and allows the user to correct the settings prior to reaching hard

clipping and shutting the amp down. To ensure incredible durability, all XXV D-Class amplifiers are now 18 Volt stable, except for

the XXV-Colossus which is 16 Volt stable.

Amplifier Feature Descriptions / End Panel & Front Mount Control Drawings...........................................................................1 - 4

XXV JUNO 2 CHANNEL AMPLIFIER APPLICATIONS...................................................................................................................5 - 6

Full range stereo / Full range mono / 2 way active with mono bass using two 2 channel models

XXV GEMINI 4 CHANNEL AMPLIFIER APPLICATIONS...............................................................................................................7 - 8

4, 3 and 2 channel full range / 2 way active, with mono bass /

front/rear high pass using a 2 channel model for mono sub bass

XXV COLOSSUS DUAL- MONO BLOCK AMPLIFIER APPLICATIONS............................................................................................9

Single and dual sub applications, independent and bridged mode applications

XXV THOR / XXV CYCLOPS / XXV GOLIATH / XXV SAMPSON

MONO BLOCK AMPLIFIER APPLICATIONS..................................................................................................................................10

Single and dual amp Master/Slave (linked) applications

XXV MAXXIMUS DUAL MONO BLOCK AMPLIFIER APPLICATIONS..............................................................................................11

Single and dual sub applications, independent and bridged mode applications

.

System design & installation...........................................................................................................................................................1 2

Setting up systems after installation for best performance...........................................................................................................13

Troubleshooting and diagnostics...................................................................................................................................................14

Features and specifications......................................................................................................................................................15 - 16

Product Warranty.............................................................................................................................................................................17

The contents of this manual may not be reproduced or copied without the

written consent of MAXXSONICS USA, Inc.

AMPLIFIER FEATURE DESCRIPTIONS

XXV SERIES AMPLIFIERS

The XXV Juno and XXV Gemini are capable of 4 & 2 Ohms stereo per All crossovers are fully variable in their respective ranges.

channel, or 4 Ohm mono bridged operation. The XXV Colossus and XXV Crossover filter slopes are 12 dB/octave for stereo filters, and 24

Maxximus are capable of 4, 2 & 1 Ohms stereo per channel, or 4 & 2 Ohms dB/octave for mono filters.

A POWER LED indicates the powered up and turned on condition.

mono bridged operation. The XXV Thor, XXV Cyclops, XXV Goliath, and

All HiFonics amplifiers feature a comprehensive diagnostic system, with

XXV Sampson are capable of 4, 2 & 1 Ohms.

speaker lead short circuit, thermal over load and amplifier DC faults

Tri-Mode operation with any stereo pair of amplifier channels is possible,

indicated by the PROTECT LED’s. The XXV series also features a new

as with all bridgeable amplifiers.

clipping led indicator that changes colors as the severity of the clipped

The input sensitivities for rated output powers are variable from 0.2 volt to

signal increases.

9 volts.

CLASS A/B FRONT MOUNT CONTROL FEATURE DESCRIPTIONS

1

SUBSONIC: The variable Subsonic filter is fully adjustable from 15Hz to 150Hz.

PARAMETRIC BASS EQ:

CUT /

BANDWIDTH: The bandwidth is fully adjustable from narrow to wide.

FREQUENCY: The frequency is fully adjustable from 40Hz to 400Hz with a selectable X1 or X10 multiplier.

CROSSOVER: The 2 channel amps have 2 crossover switches. One allows you to select HPF (high pass filter), LP/BP (low pass-band pass filter)

at 12dB or 24dB mono. The second switch allows you to select mono or stereo operation while in LP/BP configuration. The 4 channel amps have

separate CROSSOVER controls for channels 1 / 2 and channels 3/4.

INPUT MODE: In the Ch2 position, all 4 amplifier channels derive their input signals from Ch1 & Ch2 Line Inputs (RCA). When set to Ch4,

channels 1, 2, 3 and 4 receive input signals from Ch1, Ch2, Ch3 and Ch4 Line Inputs (RCA).

SUBSONIC: The variable Subsonic filter is fully adjustable from 15Hz to 35Hz.

LOW PASS FILTER: The low pass filter is fully adjustable from 35Hz to 250Hz.

PARAMETRIC BASS EQ:

BOOST: The bass boost is fully adjustable from 0dB to 10db.

BANDWIDTH: The bandwidth is fully adjustable from narrow to wide.

FREQUENCY: The frequency is fully adjustable from 30Hz to 100Hz.

MASTER / SLAVE: The mono amps (XXVThor / XXVCyclops / XXVGoliath, XXVSampson) allow you to electronically “link” two amps together

so that you can power and single subwoofer with two amplifiers.

BALANCED INPUT: Accepts balanced line inputs from 0.2 volts to 18 volts for the optional MMBLD-1 balanced line driver.

LINE INPUT: Accepts unbalanced RCA inputs from 0.2 volts to 9 volts.

LINE OUTPUT: The unbalanced RCA outputs are set the same as the CROSSOVER switch on the front mount control and end panel.

LEVEL: The input level control allows you to match the amplifier input sensitivity to the output level of the RADIO/CD source from 0.2 Volts to 9

volts when using unbalanced (RCA) and 0.2 volts to 18 volts with the balanced input.

PHASE SHIFT: The Phase Shift is fully adjustable from 0 to 180 degrees.

SYSTEM DIAGNOSTICS: The amplifier has built-in monitoring devices and protection circuits that monitor all vital functions of the amplifier.

The diagnostics light do not come on to indicate there is a failure, they come on when they detect an improper operation.

THERMAL: The amp has an internal temperature sensor that will automatically shut off the amp if it reaches dangerous temperature levels and

the LED will be Amber in color.

DC PROTECT (Short Circuit): In the unlikely event the amp should internally fail, the amp will shut down to prevent a DC voltage output to the

speakers or sub and the LED will be Red in color.

Clipping: While adjusting the amplifier the LED may light up Green indicating Pre-Clip, Amber indicating Soft-Clip or Red indicating Clip. These

indicators give the user a chance to identify incorrect settings or high distortion before it is damaging to the equipment allowing them to correct the

volume or settings.

REMOTE: All XXV amps have DIN cable bass remote jacks labeled INPUT. The XXVR-1 Bass Remote Module plugs

into the INPUT jack and allows you to adjust the Bass Boost from 0 to 10dB.

BOOST: The bass cut / boost is fully adjustable from -10dB to 10db.

D-CLASS SIDE MOUNT CONTROL FEATURE DESCRIPTIONS

SHARED CONTROL FEATURE DESCRIPTIONS

2

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XXV COLOSSUS / XXV THOR / XXV CYCLOPS / XXV GOLIATH / XXV SAMPSON AMPLIFIER END PANEL CONTROLS

+12V GND

POWER

BRIDGED

REM

+

-

+

-

L-CH R-CH

MAXXSONICS

POWERED BY

INPUT

OUTPUT

L L

R R

BALANCED

INPUT

9V 0.2V

LEVEL

0 180

PHASE

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

HFR-G1

REMOTE

PARAMETRIC EQ

0 10dB

BOOST

BANDWIDTH

30 100Hz

FREQ

15 35Hz

SUB

SONIC

35 250Hz

LPF

GND +12V

+12V GND

POWER

REM

+

-

+

-

MAXXSONICS

POWERED BY

+12V GND

POWER

REM

+

-

+

-

MAXXSONICS

POWERED BY

INPUT

OUTPUT

L L

R R

BALANCED

INPUT

9V 0.2V

LEVEL

0 180

PHASE

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

HFR-G1

REMOTE

PARAMETRIC EQ

0 10dB

BOOST

BANDWIDTH

30 100Hz

FREQ

15 35Hz

SUB

SONIC

35 250Hz

LPF

OUTPUT

MASTER

INPUT

SLAVE

IN

OUT

INPUT

OUTPUT

L L

R R

BALANCED

INPUT

9V 0.2V

LEVEL

0 180

PHASE

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

HFR-G1

REMOTE

PARAMETRIC EQ

0 10dB

BOOST

BANDWIDTH

30 100Hz

FREQ

15 35Hz

SUB

SONIC

35 250Hz

LPF

OUTPUT

MASTER

INPUT

SLAVE

IN

OUT

XXV CYCLOPS / XXV GOLIATH / XXV SAMPSON

XXV THOR

XXV COLOSSUS

4

XXV MAXXIMUS AMPLIFIER END PANEL CONTROLS

REM

+

-

+

-

+

-

+

-

R

BR

I

D

G

I

N

G

J

U P

EM

SPEAKER POSITIVE

SPEAKER NEGATIVE

BRIDGED WIRING DIAGRAM

2-OHM MINIMUM IMPEDANCE

REM

+

-

+

-

+

-

+

-

STANDARD WIRING DIAGRAM

1-OHM MINIMUM IMPEDANCE PER CHANNEL

SUBWOOFER 1

SUBWOOFER 2

INPUT

OUTPUT

L L

R R

BALANCED

INPUT

9V 0.2V

LEVEL

0 180

PHASE

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

HFR-G1

REMOTE

PARAMETRIC EQ

0 10dB

BOOST

BANDWIDTH

30 100Hz

FREQ

15 35Hz

SUB

SONIC

35 250Hz

LPF

GND +12V

+12V GND

POWER

REM

+

-

+

-

+

-

+

-

MAXXSONICS

POWERED BY

B

D

N J MPE

RI

GI

G U

R

SUBWOOFER 1

SUBWOOFER 2

MONO BRIDGED

XXV JUNO 2 CHANNEL AMPLIFIER APPLICATIONS

5

4. Line Level:

This is the most basic application for the XXV Series 2 channel amplifiers.

1. Interconnect cable checklist: Refer to the section “Setting up systems after installation for best performance”

Connect the LINE INPUTS to the Radio/CD with good quality RCA cables.

5. Bass Remote Module:

Plug in the Bass Remote Module to the amplifier “REMOTE” jack.

2. Crossover Switch:

The X-OVER switch must be in the FULL position.

NOTE: Minimum final loudspeaker impedances:

3. Crossover frequency control checklist:

4 & 2 Ohms stereo, 4 Ohms mono

N/A for full range operation.

Caution: This amplifier is not capable of 1 Ohms stereo or 2 Ohms bridged.

FULL RANGE STEREO

FULL RANGE MONO

This application illustrates the basic mono bridging method for all HiFonics

Switch setting checklist:

amplifiers.

The AMPLIFIER X-OVER switch must be in the FULL position.

Interconnect cable checklist:

Crossover frequency control setting checklist:

A MONO signal source is required, such as would be available from the mono

N/A for full range operation.

sub bass output of an active crossover, whether standalone, or built into a head

TIP:

Important:

If you are using the mono sub bass output of an active crossover, there is

unit or equalizer. Do not be tempted to connect the hot, or positive

nothing wrong with switching in the low pass filter in these amplifiers for a

outputs, from any source together to obtain a mono signal, as this could very

steeper low pass roll-off.

well damage the output stage of that source.

It is necessary to feed the SAME signal to both left and right inputs via a

Caution: This amplifier is not capable of 1 Ohms stereo or 2 Ohms bridged.

Y-adapter RCA cable.

Connect the mono speaker positive terminal to the LEFT +, and its negative

terminal to RIGHT -.

FULL RANGE

STEREO LINE INPUT

FULL RANGE

SPEAKERS

FULL RANGE

MONO LINE INPUT

VIA Y-ADAPTER

FROM MONO SOURCE

FULL RANGE

MONO SPEAKER

BALANCED PHASE CUT/BOOST

15 150Hz 40 400Hz LP/BP LP/BP HP HFR-G1

SUBSONIC FREQ CROSSOVER REMOTE

X1 X10 MO ST FULL RANGE

+12V REM GND

BRIDGED

SPEAKER OUTPUT

+ L-CH - + R-CH -

FUSE

POWER INPUT

PARAMETRIC EQ

X1 X10

9V 0.2V 0 180 0 180 -10 +10dB 40 400Hz

LEFT INPUT LEVEL LEFT RIGHT 0dB BANDWIDTH FREQ

RIGHT

OUTPUT / INPUT

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

BALANCED PHASE CUT/BOOST

15 150Hz 40 400Hz LP/BP LP/BP HP HFR-G1

SUBSONIC FREQ CROSSOVER REMOTE

X1 X10 MO ST FULL RANGE

+12V REM GND

BRIDGED

SPEAKER OUTPUT

+ L-CH - + R-CH -

FUSE

POWER INPUT

PARAMETRIC EQ

X1 X10

9V 0.2V 0 180 0 180 -10 +10dB 40 400Hz

LEFT INPUT LEVEL LEFT RIGHT 0dB BANDWIDTH FREQ

RIGHT

OUTPUT / INPUT

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

REMOTE TURN-ON

CHASSIS GROUND

TO BATTERY + 12v VIA FUSE

REMOTE TURN-ON

CHASSIS GROUND

TO BATTERY + 12v VIA FUSE

BASS REMOTE

-6dB

-20dB 0dB

CLIP

GREEN: PRE-CLIP

AMBER: SOFT CLIP

RED: HARD CLIP

GREEN: POWER

DIAGNOSTICS

RED: SHORT

AMBER: THERMAL

XXVR-1

BASS REMOTE

-6dB

-20dB 0dB

CLIP

GREEN: PRE-CLIP

AMBER: SOFT CLIP

RED: HARD CLIP

GREEN: POWER

DIAGNOSTICS

RED: SHORT

AMBER: THERMAL

XXVR-1

XXV JUNO 2 CHANNEL AMPLIFIER APPLICATIONS

6

Stereo high pass with mono low pass in a 2 way active, or bi-amplified system

Highs amplifier:

In this application we will use a 2 channel amplifier for the high frequencies, and

HI PASS: 100 Hz

a second one for the low frequencies, or mono sub bass. Please consult the

speaker specifications to determine maximum amplifier power requirements.

LOW PASS: N/A

Interconnect cable checklist:

Lows amplifier:

Connect the inputs of the bass amplifier to a Radio/CD with good quality RCA

HI PASS (Subsonic filter): 10 Hz to 40 Hz

cables. Connect the LINE OUT of the bass amplifier to the inputs of the highs

LOW PASS: 100 Hz

amplifier with a stereo RCA to RCA cable.

Please note that these frequency points are suggestions only. Refer to the

Mono bass woofer wiring:

loudspeaker manufacturer specifications and the section “Setting up systems

Connect the mono speaker positive terminal to the LEFT +, and its negative

after installation for best performance”

terminal to RIGHT -.

Level control checklist:

Switch setting checklist:

Refer to the section “Setting up systems after installation for best performance”

Highs amplifier: X-OVER switch in the HPF and CROSSOVER position,

Minimum final loudspeaker impedances:

MULTIPLIER to X1, PHASE to STEREO

2 Ohms per channel stereo.

Lows amplifier: X-OVER switch in the LP/BP 24 dB position.

4 Ohms mono bridged.

Crossover frequency control checklist:

FULL RANGE

STEREO LINE INPUT

STEREO

INTERCONNECT

RCA CABLE

REMOTE TURN-ON

CHASSIS GROUND

TO BATTERY +12v VIA FUSE

TO BATTERY + 12v VIA FUSE

STEREO

HIGHS

SPEAKERS

MONO BASS

SPEAKER

BALANCED PHASE CUT/BOOST

15 150Hz 40 400Hz LP/BP LP/BP HP HFR-G1

SUBSONIC FREQ CROSSOVER REMOTE

X1 X10 MO ST FULL RANGE

+12V REM GND

BRIDGED

SPEAKER OUTPUT

+ L-CH - + R-CH -

FUSE

POWER INPUT

PARAMETRIC EQ

X1 X10

9V 0.2V 0 180 0 180 -10 +10dB 40 400Hz

LEFT INPUT LEVEL LEFT RIGHT 0dB BANDWIDTH FREQ

RIGHT

OUTPUT / INPUT

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

BALANCED PHASE CUT/BOOST

15 150Hz 40 400Hz LP/BP LP/BP HP HFR-G1

SUBSONIC FREQ CROSSOVER REMOTE

X1 X10 MO ST FULL RANGE

+12V REM GND

BRIDGED

SPEAKER OUTPUT

+ L-CH - + R-CH -

FUSE

POWER INPUT

PARAMETRIC EQ

X1 X10

9V 0.2V 0 180 0 180 -10 +10dB 40 400Hz

LEFT INPUT LEVEL LEFT RIGHT 0dB BANDWIDTH FREQ

RIGHT

OUTPUT / INPUT

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

-6dB

-20dB 0dB

CLIP

GREEN: PRE-CLIP

AMBER: SOFT CLIP

RED: HARD CLIP

GREEN: POWER

DIAGNOSTICS

RED: SHORT

AMBER: THERMAL

XXVR-1

XXV GEMINI 4 CHANNEL AMPLIFIER APPLICATIONS

7

4 CHANNEL FULL RANGE SYSTEM

2 or 3 CHANNEL FULL RANGE SYSTEM

Level control checklist:

Here we show how to use the 4 channel amplifiers as straightforward discrete

Refer to the section “Setting up systems after installation for best performance”

4 channel full range units.

Minimum final loudspeaker impedances:

Interconnect cable checklist:

2 Ohm per channel stereo.

Connect the four inputs of the amplifier to a Radio/CD with good quality RCA

cables.

4 Ohms Bridged.

Crossover Switch setting checklist:

1 / 2 CROSSOVER: FULL

3 / 4 CROSSOVER: FULL

Crossover frequency control checklist:

Channels 1 / 2:

HI PASS: N/A

LOW PASS: N/A

Channels 3 / 4:

HI PASS: N/A

LOW PASS: N/A

Channels 3 / 4:

Here we show how to use the 4 channel amplifiers as full range 2 or 3 channel

HI PASS: N/A

units by taking advantage of the mono bridging capability of all HiFonics

amplifiers.

LOW PASS: N/A

The following example shows how to create a 3 channel system by mono

TIP: If you are using the mono sub bass output of an active crossover, there is

bridging channel pair 3 / 4. In order to create a 2 channel system, simply follow

nothing wrong with switching in the low pass filter in these amplifiers for a

the example to also mono bridge channel pair 1 / 2.

steeper low pass rolloff.

Interconnect cable checklist:

Level control checklist:

Connect the inputs of channel pair 1 / 2 to a suitable stereo source, e.g. a head

Refer to the section “Setting up systems after installation for best performance”

unit with good quality RCA cables.

A MONO signal source is required to bridge channel pair 3 / 4, such as would be

Minimum final loudspeaker impedances:

available from the mono sub bass output of an active crossover, whether

2 Ohm per channel in stereo mode.

standalone, or built into a head unit or equalizer. Important: Do not be tempted

4 Ohms mono bridged.

to connect the hot, or positive outputs, from any source together to obtain a

mono signal, as this could very well damage the output stage of that source.

It is necessary to feed the SAME signal to both left and right inputs via a

Y-adapter RCA cable.

Connect the mono speaker positive terminal to

the LEFT +, and its negative terminal to

RIGHT - as shown.

Crossover Switch setting checklist:

1 / 2 CROSSOVER: FULL

3 / 4 CROSSOVER: FULL

Crossover frequency control checklist:

Channels 1 / 2:

HI PASS: N/A

LOW PASS: N/A

FULL RANGE

SPEAKERS

BASS REMOTE

1 STEREO

1 MONO

FULL RANGE

LINE INPUTS

BALANCED PHASE CUT/BOOST HIGH PASS

9V 0.2V -10 +10dB 40 400Hz 15 150Hz 40 400Hz LP/BP

LEVEL CUT/BOOST BANDWIDTH FREQ SUBSONIC FREQ CROSSOVER

HFR-G1

REMOTE

CH 1&2

AMPLIFIER

ROUTING

PARAMETRIC EQ

FULL RANGE

FULL RANGE CH1&2

MO ST LP/BP HP

FUSE

PARAMETRIC EQ

X1 X10

9V 0.2V 0 180 0 180 -10 +10dB 40 400Hz

MONO MIX CH1 CH3 INPUT LEVEL LEFT RIGHT 0dB BANDWIDTH FREQ FREQ HP CH3&4

X1 X10

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

+12V REM GND

POWER INPUT

+ CH1 - + CH2 -

+ CH3 - + CH4 -

BRIDGED

SPEAKER OUTPUT

BRIDGED

CH3 & 4

CH1 & 2

REMOTE TURN-ON

CHASSIS GROUND

TO BATTERY + 12V VIA FUSE

BASS REMOTE

FULL RANGE

STEREO LINE

INPUTS

Channels 1 & 2

Channels 3 & 4

BALANCED PHASE CUT/BOOST HIGH PASS

9V 0.2V -10 +10dB 40 400Hz 15 150Hz 40 400Hz LP/BP

LEVEL CUT/BOOST BANDWIDTH FREQ SUBSONIC FREQ CROSSOVER

HFR-G1

REMOTE

CH 1&2

AMPLIFIER

ROUTING

PARAMETRIC EQ

FULL RANGE

FULL RANGE CH1&2

MO ST LP/BP HP

FUSE

PARAMETRIC EQ

X1 X10

9V 0.2V 0 180 0 180 -10 +10dB 40 400Hz

MONO MIX CH1 CH3 INPUT LEVEL LEFT RIGHT 0dB BANDWIDTH FREQ FREQ HP CH3&4

X1 X10

CH2 CH4

CH4

2CH 4CH

MODE

OUTPUT INPUT

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

+12V REM GND

POWER INPUT

+ CH1 - + CH2 -

+ CH3 - + CH4 -

BRIDGED

SPEAKER OUTPUT

BRIDGED

CH3 & 4

CH1 & 2

-6dB

-20dB 0dB

CLIP

GREEN: PRE-CLIP

AMBER: SOFT CLIP

RED: HARD CLIP

GREEN: POWER

DIAGNOSTICS

RED: SHORT

AMBER: THERMAL

XXVR-1

CH2 CH4

CH4

2CH 4CH

MODE

OUTPUT INPUT

-6dB

-20dB 0dB

CLIP

GREEN: PRE-CLIP

AMBER: SOFT CLIP

RED: HARD CLIP

GREEN: POWER

DIAGNOSTICS

RED: SHORT

AMBER: THERMAL

XXVR-1

XXV GEMINI 4 CHANNEL AMPLIFIER APPLICATIONS

8

2 way active, or bi-amplified system with mono bass

2 way active, or bi-amplified system with mono bass, and faded highs/lows

Channels 3 / 4:

This application shows how easily a 2 way active system can be implemented

HI PASS (subsonic): 20 Hz

using a 4 channel amplifier.

Channels 1 and 2 will be used for highs, and channels 3 and 4 for mono bass.

LOW PASS: 100 Hz

Interconnect cable checklist:

Please note that these frequency points are suggestions only. Refer to the

We need to feed the same signal to both sets of channels, so you must use 2

loudspeaker manufacturer specifications and the section “Setting up systems

after installation for best performance”

Y-adapters, one to feed the LEFT signal to channels 1 and 3, and the right signal

to channels 2 and 4, as shown.

Level control checklist:

Mono bass woofer wiring:

Refer to the section “Setting up systems after installation for best performance”

Connect the mono speaker positive terminal to the LEFT +, and its negative

terminal to RIGHT -.

Minimum final loudspeaker impedances:

2 Ohms per channel in stereo mode.

CROSSOVER Switch setting checklist:

4 Ohms mono bridged.

1 / 2 CROSSOVER: HPF

3 / 4 CROSSOVER: LP/BP

Crossover frequency control checklist:

Channels 1 / 2:

HI PASS: 100 Hz

LOW PASS: N/A

Minimum final loudspeaker impedances:

2 Ohms per channel in stereo mode.

4 Ohms mono bridged.

Interconnect cable checklist:

Here we present a variation of the previous system. Since this is a 2 way

Use good quality RCA leads to connect the inputs of the amplifier to the source

system, we can use the front outputs from a head unit to drive the highs, and the

as shown.

rear output to drive the bass This method allows the listener to easily adjust the

relative levels of bass to highs, with the front to rear fade on the head unit.

Follow the instructions as per the previous system for switch and crossover

Channels 1 and 2 will be used for highs, and channels 3 and 4 for mono bass.

settings.

BASS REMOTE

FULL RANGE

STEREO LINE

INPUTS

BALANCED PHASE CUT/BOOST HIGH PASS

9V 0.2V -10 +10dB 40 400Hz 15 150Hz 40 400Hz LP/BP

LEVEL CUT/BOOST BANDWIDTH FREQ SUBSONIC FREQ CROSSOVER

HFR-G1

REMOTE

CH 1&2

AMPLIFIER

ROUTING

PARAMETRIC EQ

FULL RANGE

FULL RANGE CH1&2

MO ST LP/BP HP

FUSE

PARAMETRIC EQ

X1 X10

9V 0.2V 0 180 0 180 -10 +10dB 40 400Hz

MONO MIX CH1 CH3 INPUT LEVEL LEFT RIGHT 0dB BANDWIDTH FREQ FREQ HP CH3&4

X1 X10

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

+12V REM GND

POWER INPUT

+ CH1 - + CH2 -

+ CH3 - + CH4 -

BRIDGED

SPEAKER OUTPUT

BRIDGED

CH3 & 4

CH1 & 2

REMOTE TURN-ON

CHASSIS GROUND

TO BATTERY + 12V VIA FUSE

CH2 CH4

CH4

2CH 4CH

MODE

OUTPUT INPUT

-6dB

-20dB 0dB

CLIP

GREEN: PRE-CLIP

AMBER: SOFT CLIP

RED: HARD CLIP

GREEN: POWER

DIAGNOSTICS

RED: SHORT

AMBER: THERMAL

XXVR-1

BASS REMOTE

LEFT TO

CHANNELS

1 AND 3

RIGHT TO

CHANNELS

2 AND 4

BALANCED PHASE CUT/BOOST HIGH PASS

9V 0.2V -10 +10dB 40 400Hz 15 150Hz 40 400Hz LP/BP

LEVEL CUT/BOOST BANDWIDTH FREQ SUBSONIC FREQ CROSSOVER

HFR-G1

REMOTE

CH 1&2

AMPLIFIER

ROUTING

PARAMETRIC EQ

FULL RANGE

FULL RANGE CH1&2

MO ST LP/BP HP

FUSE

PARAMETRIC EQ

X1 X10

9V 0.2V 0 180 0 180 -10 +10dB 40 400Hz

MONO MIX CH1 CH3 INPUT LEVEL LEFT RIGHT 0dB BANDWIDTH FREQ FREQ HP CH3&4

X1 X10

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

+12V REM GND

POWER INPUT

+ CH1 - + CH2 -

+ CH3 - + CH4 -

BRIDGED

SPEAKER OUTPUT

BRIDGED

CH3 & 4

CH1 & 2

REMOTE TURN-ON

CHASSIS GROUND

TO BATTERY + 12V VIA FUSE

CH2 CH4

CH4

2CH 4CH

MODE

OUTPUT INPUT

-6dB

-20dB 0dB

CLIP

GREEN: PRE-CLIP

AMBER: SOFT CLIP

RED: HARD CLIP

GREEN: POWER

DIAGNOSTICS

RED: SHORT

AMBER: THERMAL

XXVR-1

XXV COLOSSUS DUAL MONO BLOCK AMPLIFIER APPLICATIONS

BASIC APPLICATION

9

The Dual Mono Block amplifiers are capable of 4, 2 & 1 Ohm stereo and 4 & 2

bridged loads and can be used in any of the “bi-amplifier” systems described

in the XXV-Juno and XXV-Gemini directions.

The XXV-Colossus has two 1600 watt D-Class channels built-in labeled

L & R on the end panel.

SINGLE AMP INSTALLATION PROCEDURE:

1. Connect the amp LINE INPUTS to the Radio/CD player full range or mono line out puts

4. Connect a 2 gauge ground cable directly to chassis ground with in 36” of the amp.

with good quality RCA interconnect cables.

- Be sure to remove any paint or primer from the ground point.

2. Plug in the XXVR-1 bass remote module into the amp REMOTE INPUT jack.

- Use a nut, bolt and lock washer to secure the ground cable to the chassis ground.

3. Route a 2 gauge power cable directly to the vehicle battery with an in-line 300 amp fuse.

5. Connect the subwoofer(s) in accordance to the diagrams below.

This will allow you to operate separate subs independently (on each channel L

or R) at 4, 2 or 1 Ohm at up to 1600 watts or bridged across L & R to operate a

single sub up to 3200 watts at 4 or 2 Ohms.

Note: The amp is not capable of 1 Ohm when bridged across L & R.

The crossovers and XXVR-1 Bass Remote Module will operate both L & R

channels simultaneously.

REMOTE TURN-ON

CHASSIS GROUND

TO BATTERY +12v VIA

300 AMP FUSE

TO BATTERY +12v VIA

300 AMP FUSE

DESIGNATED MONO

LINE INPUT

DESIGNATED MONO

LINE INPUT

USING CHANNELS L & R INDEPENDENTLY

USING CHANNELS L & R BRIDGED

BRIDGED MONO

SUBWOOFER

2 OHM MINIMUM

Note: The amplifier is capable of

4, 2 & 1 Ohms per channel in this

configuration

Note: The amplifier is capable of

4 & 2 Ohms in this configuration.

It is not capable of 1 Ohm.

FULL RANGE

STEREO LINE INPUT

NOT USED

Y-ADAPTOR

FULL RANGE

STEREO LINE INPUT

NOT USED

Y-ADAPTOR

Note: You can use the Radio/CD designated mono

line output or a full range stereo line output.

For full range stereo line output, you will need an

optional “Y-Adaptor” as shown

Note: You can use the Radio/CD designated mono

line output or a full range stereo line output.

For full range stereo line output, you will need an

optional “Y-Adaptor” as shown

INPUT

OUTPUT

L L

R R

BALANCED

INPUT

9V 0.2V

LEVEL

0 180

PHASE

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

HFR-G1

REMOTE

PARAMETRIC EQ

0 10dB

BOOST

BANDWIDTH

30 100Hz

FREQ

15 35Hz

SUB

SONIC

35 250Hz

LPF

+12V GND

POWER

BRIDGED

REM

+

-

+

-

L-CH R-CH

MAXXSONICS

POWERED BY

+12V GND

POWER

BRIDGED

REM

+

-

+

-

L-CH R-CH

MAXXSONICS

POWERED BY

INPUT

OUTPUT

L L

R R

BALANCED

INPUT

9V 0.2V

LEVEL

0 180

PHASE

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

HFR-G1

REMOTE

PARAMETRIC EQ

0 10dB

BOOST

BANDWIDTH

30 100Hz

FREQ

15 35Hz

SUB

SONIC

35 250Hz

LPF

+12V GND

POWER

BRIDGED

REM

+

-

+

-

L-CH R-CH

MAXXSONICS

POWERED BY

+12V GND

POWER

BRIDGED

REM

+

-

+

-

L-CH R-CH

MAXXSONICS

POWERED BY

BASS REMOTE

-6dB

-20dB 0dB

CLIP

GREEN: PRE-CLIP

AMBER: SOFT CLIP

RED: HARD CLIP

GREEN: POWER

DIAGNOSTICS

RED: SHORT

AMBER: THERMAL

XXVR-1

-6dB

-20dB 0dB

CLIP

GREEN: PRE-CLIP

AMBER: SOFT CLIP

RED: HARD CLIP

GREEN: POWER

DIAGNOSTICS

RED: SHORT

AMBER: THERMAL

XXVR-1

XXV THOR / XXV CYCLOPS / XXV GOLIATH / XXV SAMPSON MONO AMPLIFIER APPLICATIONS

BASIC APPLICATION

10

The 1 channel mono amplifiers are capable of 4, 2 & 1 Ohms loads and can be

used in any of the “bi-amplifier” systems described in the XXV-Juno and XXV-Gemini

directions.

SINGLE AMP INSTALLATION PROCEDURE:

4. Connect a 0 gauge ground cables directly to chassis ground with in 36” of the amp.

1. Connect the amp LINE INPUTS to the Radio/CD player full range or mono line out puts with good

- Be sure to remove any paint or primer from the ground point.

quality RCA interconnect cables.

- Use a nut, bolt and lock washer to secure the ground cable to the chassis ground.

2. Plug in the XXVR-1 bass remote module into the amp REMOTE INPUT jack.

5. Connect the subwoofer(s) in accordance to the diagrams below.

3. Route a 0 gauge power cables directly to the vehicle battery with an in-line fuse.

6. Make sure the MASTER/SLAVE switch is in the MASTER position.

Note: The amplifier will not work if the MASTER/SLAVE switch is in the Slave position

DUAL AMP INSTALLATION PROCEDURE:

5. Connect four 0 gauge ground cables directly to chassis ground with in 36” of the amp.

1. Connect the amp LINE INPUTS to the Radio/CD player full range or mono line out puts with good

- Be sure to remove any paint or primer from the ground point.

quality RCA interconnect cables.

- Use a nut, bolt and lock washer to secure the ground cable to the chassis ground.

2. Plug in the XXVR-1 bass remote module into the amp REMOTE INPUT jack. This will allow the

6. Make sure the Master amp MASTER/SLAVE switch is in the MASTER position. Make sure the Slave

Master amp to control both Master and Slave amps with just one Bass Remote.

amp MASTER/SLAVE switch is in the SLAVE position.

3. Connect an RCA jumper cable from the Master amp MASTER OUTPUT to the Slave amp SLAVE

7. Connect the subwoofer(s) in accordance to the diagrams below.

INPUT. Note: This will “link” the amps so that the Master amp crossover switches will control both the

8. Connect a 12 gauge jumper from Master amp speaker - to Slave amp speaker - as shown below.

Master and Slave amps. The Slave amp crossover switches will be bypassed.

4. Route four 0 gauge power cables directly to the vehicle battery with an in-line fuse.

REMOTE TURN-ON

TO BATTERY +12v VIA FUSE

MONO

SUBWOOFER

DESIGNATED

MONO

LINE INPUT

DESIGNATED MONO

LINE INPUT

A SINGLE REMOTE IS CONNECTED TO THE

MASTER AMP IN A LINKED PAIR AND ASSUMES

CONTROL OF BOTH AMPLIFIERS

BASS EQ FUNCTION

CHASSIS GROUND

Linking two amps for single or dual subwoofer application

SINGLE VOICE COIL

SUBWOOFER

RCA JUMPER CABLE

MASTER

SLAVE

DUAL VOICE COIL

SUBWOOFER

MASTER OUTPUT TO SLAVE INPUT

12 GAUGE JUMPER WIRE

TWO SINGLE COIL

SUBWOOFERS

+ -

FULL RANGE

STEREO LINE INPUT

NOT USED

Y-ADAPTOR

FULL RANGE

STEREO LINE INPUT

NOT USED

Y-ADAPTOR

Note: You can use the Radio/CD designated mono

line output or a full range stereo line output.

For full range stereo line output, you will need an

optional “Y-Adaptor” as shown

Note: You can use the Radio/CD designated mono

line output or a full range stereo line output.

For full range stereo line output, you will need an

optional “Y-Adaptor” as shown

PARALLEL MONO

SUBWOOFERS

2 OHMS EACH MINIMUM

GND +12V

+12V GND

POWER

REM

+

-

+

-

MAXXSONICS

POWERED BY

GND +12V

+12V GND

POWER

REM

+

-

+

-

MAXXSONICS

POWERED BY

GND +12V

+12V GND

POWER

REM

+

-

+

-

MAXXSONICS

POWERED BY

GND +12V

+12V GND

POWER

REM

+

-

+

-

MAXXSONICS

POWERED BY

GND +12V

+12V GND

POWER

REM

+

-

+

-

MAXXSONICS

POWERED BY

INPUT

OUTPUT

L L

R R

BALANCED

INPUT

9V 0.2V

LEVEL

0 180

PHASE

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

HFR-G1

REMOTE

PARAMETRIC EQ

0 10dB

BOOST

BANDWIDTH

30 100Hz

FREQ

15 35Hz

SUB

SONIC

35 250Hz

LPF

OUTPUT

MASTER

INPUT

SLAVE

IN

OUT

GND +12V

+12V GND

POWER

REM

+

-

+

-

MAXXSONICS

POWERED BY

INPUT

OUTPUT

L L

R R

BALANCED

INPUT

9V 0.2V

LEVEL

0 180

PHASE

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

HFR-G1

REMOTE

PARAMETRIC EQ

0 10dB

BOOST

BANDWIDTH

30 100Hz

FREQ

15 35Hz

SUB

SONIC

35 250Hz

LPF

OUTPUT

MASTER

INPUT

SLAVE

IN

OUT

GND +12V

+12V GND

POWER

REM

+

-

+

-

REM

+

-

+

-

MAXXSONICS

POWERED BY

INPUT

OUTPUT

L L

R R

BALANCED

INPUT

9V 0.2V

LEVEL

0 180

PHASE

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

HFR-G1

REMOTE

PARAMETRIC EQ

0 10dB

BOOST

BANDWIDTH

30 100Hz

FREQ

15 35Hz

SUB

SONIC

35 250Hz

LPF

OUTPUT

MASTER

INPUT

SLAVE

IN

OUT

GND +12V

+12V GND

POWER

MAXXSONICS

POWERED BY

BASS REMOTE

-6dB

-20dB 0dB

CLIP

GREEN: PRE-CLIP

AMBER: SOFT CLIP

RED: HARD CLIP

GREEN: POWER

DIAGNOSTICS

RED: SHORT

AMBER: THERMAL

XXVR-1

BASS REMOTE

-6dB

-20dB 0dB

CLIP

GREEN: PRE-CLIP

AMBER: SOFT CLIP

RED: HARD CLIP

GREEN: POWER

DIAGNOSTICS

RED: SHORT

AMBER: THERMAL

XXVR-1

Amplifiers can run at a 2ohm

load minimum when linked

XXV MAXXIMUS DUAL MONO BLOCK AMPLIFIER APPLICATIONS

BASIC APPLICATION

11

The 2 channel mono amplifiers are capable of 4, 2 & 1 Ohm loads wired channels 1 & 2

independent as shown below or 4 or 2 Ohms wired mono bridged shown below.

The XXV-MAXXIMUS has two 5000 watt D-Class channels built-in labeled Subwoofer 1

& Subwoofer 2 on the end panel.

SINGLE AMP INSTALLATION PROCEDURE:

1. Connect the amp LINE INPUTS to the Radio/CD player full range or mono line out puts with good

4. Connect two 0 gauge ground cables directly to chassis ground with in 36” of the amp.

quality RCA interconnect cables.

- Be sure to remove any paint or primer from the ground point.

2. Plug in the XXVR-1 bass remote module into the amp REMOTE INPUT jack.

- Use a nut, bolt and lock washer to secure the ground cable to the chassis ground.

3. Route two 0 gauge power cables directly to the vehicle battery with an in-line 300 amp fuse.

5. Connect the subwoofer(s) in accordance to the diagrams below.

This will allow you to operate separate subs independently (on each channel 1 or 2) at 4, 2 or

1 Ohm at up to 5000 watts or bridged across 1& 2 to operate a single sub up to 10000 watts

at 4 or 2 Ohms.

Note: The amp is not capable of 1 Ohm when bridged across 1 & 2.

The crossovers and XXVR-1 Bass Remote Module will operate both 1 & 2 channels

simultaneously.

USING CHANNELS 1 & 2 MONO BRIDGED

USING CHANNELS 1 & 2 INDEPENDENTLY

DESIGNATED MONO

LINE INPUT

REMOTE TURN-ON

TO BATTERY +12v VIA FUSE

CHASSIS GROUND

Note: The amp is capable of driving 4, 2 or 1-Ohm per sub in this configuration

Impedances below 1-Ohm will damage the amplifier

Note: The amp is capable of driving 4 or 2-Ohms in this configuration

Impedances below 2-Ohms will damage the amplifier

Caution: You must place a 12 gauge mono

Bridged Jumper Wire as shown above

FULL RANGE

STEREO LINE INPUT

NOT USED

Y-ADAPTOR

Note: You can use the Radio/CD designated mono line

output or a full range stereo line output. For full range

stereo line output, you will need an optional “Y-Adaptor”

as shown

INPUT

OUTPUT

L L

R R

BALANCED

INPUT

9V 0.2V

LEVEL

0 180

PHASE

RED - CLIP

GREEN - PRE-CLIP

AMBER - NEAR CLIP

DIAGNOSTICS

AMBER - THERMAL

RED - SHORT CIRCUIT

HFR-G1

REMOTE

PARAMETRIC EQ

0 10dB

BOOST

BANDWIDTH

30 100Hz

FREQ

15 35Hz

SUB

SONIC

35 250Hz

LPF

GND +12V

+12V GND

POWER

REM

+

-

+

-

+

-

+

-

MAXXSONICS

POWERED BY

U R

RI

G N

G PB D

I

J M

E

SUBWOOFER 1

SUBWOOFER 2

MONO BRIDGED

GND +12V

+12V GND

POWER

REM

+

-

+

-

+

-

+

-

SUBWOOFER 1

SUBWOOFER 2

GND +12V

+12V GND

POWER

REM

+

-

+

-

+

-

+

-

BRI

N

J

PER

DG

I

G UM

SUBWOOFER 1

SUBWOOFER 2

12

Installation

The success of any car stereo system relies on several factors, such as the system design, execution of the installation, and system setup. This section is

intended to assist the installer by offering several tips and hints about good installation practice. Please remember that any system is only as good as its

weakest link.

Design

Determine the system format, e.g., single amplifier, active, front/rear and so on. Then choose the amplifier power points to according to personal taste. Please remember

that higher power systems are not necessarily useful purely for high sound pressure levels, but also to establish a headroom capability, to reproduce musical peaks cleanly

without distortion. Lower power amplifiers will clip earlier than their more powerful cousins, and cause loudspeaker failure when overdrive, due to the harmonics generated

by a clipped signal, thus overheating voice coils.

Choose loudspeaker and amplifier mounting locations. Loudspeaker location is always a matter of compromise between space and sound stage imaging. Amplifiers

should be mounted with the fins running vertically for best convection cooling, to minimize overheating.

Purchase the best quality RCA cables you can afford, for reliability and less engine noise interference in the audio system.

General:

Mount the amplifier/s in the chosen location.

Run the wiring so that RCA cables are at least 18“ away from power and speaker cables. Keep RCA cables away from electrical devices in the vehicle that can cause

electrical noise, such as fuel pumps.

Power and ground connections:

Use a sufficient gauge power cable, at least 4 gauge per class A/B and 0 gauge per class D amplifier. In a multi amplifier system, it is advisable to mount a large enough fuse

right at the battery, and run a master +12 volt power cable to a fused distribution block near the amplifiers. It is then a simple matter to connect the +12 volt terminal of each

amplifier to the distribution block.

Ground each amplifier with as short a ground lead, again at least 4 gauge per class A/B and 0 gauge per class D amplifier, directly to the vehicle chassis. Use a ground

distribution block, if you wish, but it is extremely important to keep the main ground lead from this distribution block to the chassis as short as possible, not more than 12“.

The ground connection integrity to the chassis is very important, and the best way to achieve a good, solid electrical and mechanical contact is to use a large round crimp

lug, crimped and soldered to the ground cable. The next step is to scrape the paint off the vehicle chassis, slightly larger than the ground lug, at the connection point. Drill a

clearance hole in the chassis, the same size as the lug hole, and use a bolt, spring washer and nut to securely fasten the ground lug. Use petroleum jelly to coat the bolt/lug

connection, to prevent oxidization with time.

TIP: Use the same approach when installing head units, equalizers or any audio equipment for that matter - run short individual grounds from each piece directly to the

vehicle chassis, to minimize ground loops and system noise.

All power, ground and speaker connections should be crimped and soldered for reliability. Make sure that none of the cable insulation can chafe against exposed metal in

the vehicle, causing short circuits to the chassis.

Safe connection sequence:

After all cables are run, connect speaker wires to the speakers and amplifiers, then run and plug in RCA cables. Next, connect all power grounds and remote turn on leads.

Now connect all +12 volt cables to the amplifiers and distribution blocks and fuse holders. Finally, connect the main +12 volt cable to the battery, with the main fuse removed,

and we are almost ready to power up the system.

Power up the system:

The following procedure may seem like overkill, but there is nothing more frustrating than turning on a system for the first time, and immediately it does not work properly.

First, make sure the head unit is off, and turn all level controls to minimum (counter-clockwise), including the head unit volume control. Set all equalizers to 0 dB (no boost),

and all crossover frequency controls at approximate frequencies, as recommended by the loudspeaker manufacturer. Set all input selector and crossover switches as

required for the application.

Remove all amplifier fuses, and insert the main fuse at the battery. If the fuse does not blow, you can insert the fuse in one of the amplifiers, and we are ready to turn on the

system.

Turn the head unit on, insert a CD, or select a radio station, and increase the head unit volume control. If the system sounds fine, turn off the head unit, and install fuses in the

remaining amplifiers, one by one, till the complete system is powered up and functioning properly.

SYSTEM DESIGN AND INSTALLATION

SETTING UP SYSTEMS AFTER INSTALLATION FOR BEST PERFORMANCE

13

General:

As mentioned in the “General Installation Notes” section, the system should now be powered up, and working. At this point, all crossover frequency and input selection

switches should be properly set for the application, and all volume, level and equalizer controls turned to minimum.

Level control setup:

Insert a CD or cassette that you are familiar with to use as a reference, and turn the head unit volume control to about 80% of its full setting to maintain an un clipped signal.

The system sound level will of course be very low, and the following procedures will help you to match the amplifier input sensitivities properly to the head unit output signal

level.

Single 2 channel amplifier system (XXV-JUNO):

Turn the level control up slowly, till you hear distortion, then back off a few degrees on the control.

Single 4 channel amplifier systems (XXV-GEMINI):

Turn the channel 1 & 2 level control up slowly, till you hear distortion, then back off a few degrees on the control.

Repeat for channel 3 & 4.

2 or 3 way active systems (all):

Always start with the bass, or low frequency amplifier as a reference, by turning its control up to the point where distortion is audible, and back it off some.

Now adjust the level control for the highs or tweeter channels in a 2 way active system, to balance the highs to lows.

In a 3 way active system, match the midrange level to the bass, and then the highs to the midrange and bass. It may be necessary to perform a few iterations of the midrange

and highs level control settings to achieve a satisfactory sound balance.

Crossover frequency fine tuning:

We had started off in the “General Installation Notes” section by setting crossover frequency controls to approximate positions, and now you can adjust these for best sound

quality. Be careful not to stray too far from those crossover frequencies as recommended by the loudspeaker manufacturer, as it is quite possible to damage midrange and

tweeters with excess power outside their nominal operating frequency ranges.

Equalizer setup:

Once all levels and crossover frequencies have been set for a pleasant sound balance, we can start equalizing the system frequency response. It is important to remember

that a boost applied at any frequency, or range of frequencies, will cause severe amplifier clipping. The following comments apply to ALL equalizers and tone controls on the

amplifiers, as well as those on head units and dash mount equalizers.

Use the head unit volume control to adjust the system to an intermediate level, and proceed to adjust equalizers and tone controls to personal taste. Now go back to the

Level control setup above, and readjust all level controls.

Remote Bass Module:

Please understand that the Remote Bass Module (XXVR-1) is not a volume control, but rather a variable 45Hz Bass Boost. This module is intended for providing adjustable

bass impact during listening. Turning the module all the way to the right or using it as a volume control can damage the amplifier, subwoofers or speakers in the system.

Sit back and enjoy the music!

TROUBLESHOOTING A SYSTEM

14

The key to finding the problem in a misbehaving sound system is to isolate parts of that system in a logical fashion to track down the fault.

Description of the Diagnostic system built into all HiFonics amplifiers

The diagnostic system will shut down the amplifier, until reset by turning the head unit off, and back on. This state of affairs will be indicated by the front/side panel

PROTECT LED lighting up under the following conditions:

1 - A short circuit on the loudspeaker leads.

2 - An internal amplifier fault that causes a DC offset on the loudspeaker output.

Should the amplifier go into diagnostic mode, simply disconnect all RCA and speaker leads, while keeping +12 volt, power ground and remote leads connected. Now turn

the amplifier back on, and if the diagnostic LED lights, the amplifier has an internal fault.

If not, plug the RCA cables back, and reset the amplifier. If it goes into diagnostic now, the fault lies in the input, either with bad cables or source unit.

If the amplifier seems fine with RCA cables plugged in, connect the speakers, one at a time, and if one of the speakers or its wiring is faulty, it will activate the diagnostic

system.

Amplifier heatsink overheating

The amplifiers will shut down when the heatsink temperature reaches 80 degrees centigrade, and turn back on once the unit has cooled down below that point.

Causes of overheating:

1 - Inadequate cooling - relocate or remount to provide better natural airflow over the fins.

2 - Driving high power levels into low impedances - back off on the volume control, and/or make sure you are not loading the amplifier with less than the recommended

loudspeaker impedance.

Low output power

1 - Check that level controls have been set up properly.

2 - Make sure that the battery voltage, as measured at the amplifier’s +12 volt and ground terminals, is 11 volts or more.

3 - Check all +12 volt and ground connections.

Fuses blowing

1 - The use of loudspeaker impedances below the recommended minimums will draw more current - check.

2 - A short on the main +12 volt cable from the battery to the vehicle chassis will cause the main fuse to blow.

3 - If an amplifier fuse blows continually, with only +12 volt, ground and remote leads connected, the amplifier may be faulty.

System does not turn on

1 - Check all fuses.

2 - Check all connections.

3 - Measure the +12 volt and remote turn on voltages at the amplifier terminals. If these are non existent or low, take voltage measurements at fuse holders, distribution

blocks, the head unit’s +12 volt and remote leads to localize the problem.

Noise problems

System noise can be divided into two categories, hiss, and electrical interference.

Hiss, or white noise

1 - High levels of white noise usually occur when amplifier level controls are turned up too high - readjust according to the procedures in section ”Setting up systems after

installation for best performance”

2 - Another major problem that can cause excessive hiss, is a noisy head unit - unplug the amplifier input RCA cables, and if the hiss level reduces, the source unit is at fault.

Electrical interference

The inside of an automobile is a very hostile electrical environment. The multitude of electrical systems, such as the ignition system, alternator, fuel pumps, air conditioners,

to mention just a few, create radiated electrical fields, as well as noise on the +12 volt supply and ground. Remember to isolate the problem - first unplug amplifier input RCA

cables, if the noise is still present, check the speaker leads, if not, plug the RCA’s back, and investigate the source driving the amplifier, one component at a time.

A ticking or whine that changes with engine RPM:

1 - This problem could be caused by radiation pickup of RCA cables that are too close to a fuel pump or a distributor.

2 - Check that the head unit ground is connected straight to the vehicle chassis, and does not use factory wiring for ground.

3 - Try to supply the head unit with a clean +12 volt supply directly from the battery +, instead of using a supply from the in dash wiring/fusebox.

A constant whine:

This type of noise can be more difficult to pinpoint, but is usually caused by some kind of instability, causing oscillations in the system.

1 - Check all connections, especially for good grounds.

2 - Make sure that no speaker leads are shorting to exposed metal on the vehicle chassis.

3 - RCA cables are notorious for their problematic nature, so check that these are good, in particular the shield connections.

2 CHANNEL 4 CHANNEL

XXV JUNO XXV GEMINI

Output Power Ratings

4 Ohm Load 100 x 2 125 x 4

2 Ohm Load 175 x 2 200 x 4

Mono Bridged at 4 Ohm 350 x 1 400 x 2

Miscellaneous Specifications

Slow unmute at turn on (Soft start) YES YES

Input Selector Switch - 2*4

Frequency response, -3dB 2Hz - 70KHz 2Hz - 70KHz

Damping factor 2000 2200

Signal to noise ratio (A-weighted) 101dB 100dB

THD&N 0.03% 0.03%

Channel Separation at 1KHz 70dB 70dB

Variable input level control, unbalanced 0.2V - 9.0V 0.2V - 9.0V

Variable input level control, balanced 0.04V - 18V 0.04V - 18V

Input Impedance (unbalanced) 47Kohm 47Kohm

Input Impedance, balanced 10Kohm 10Kohm

Power and Specific Diagnostic LED's YES YES

Protection (DC, Short, Thermal, Overload, Clip) YES YES

Power supply, all MOSFET Full PWM Full PWM

Output power circuit configuration BIPOLAR MOSFET

Crossover and switching for channels 1/2 LP-BP/FULL/HP LP-BP/FULL/HP

Variable High pass, 12 dB/octave 15Hz - 4KHz 15Hz - 4KHz

Variable Low pass, 12 dB/octave stereo, 24dB/octave mono 40Hz - 4KHz 40Hz - 4KHz

STEREO/MONO switch YES YES

Subsonic Filter, 12dB/octave stereo, 24dB/octave mono 15Hz -150Hz 15Hz -150Hz

Bass Cut/Boost -10 - +10dB -10 - +10dB

Crossover and switching for channels 3/4 -

Variable High pass, 12 dB/octave stereo, 24dB/octave mono - 15Hz - 4KHz

Variable Low pass, 12 dB/octave stereo, 24dB/octave mono - 40Hz - 4KHz

STEREO/MONO switch - YES

Bass EQ - -10 - +10dB

Phase Shift Controller

Phase change in degrees 0-180 0-180

Separate phase controls for these channels L/R CH 1/2

Connector types

Balanced Input (Din) YES YES

Unbalanced Input (RCA) YES YES

Line Output (RCA) HP/FULL/BP CH1/2/3/4 Full range summed

Remote Bass Module XXVR-1 XXVR-1

Mechanical

Machined goldplated brass power terminal block 2GA 2GA

Machined goldplated brass speaker terminal block/s 10GA 10GA

Heat Sink Dimensions (L x W x H) inches 12.6 x 13 x 2.6 17.7 x 13 x 2.6

Fuse Rating 50 AMPS x 1 50 AMPS x 2

HIFONICS XXV 2 & 4 CHANNEL AMPLIFIER FEATURES

FEATURES

15

Features subject to change with out notice

4 4

Output Power Rating

14.4 Volts 4-Ohms

14.4 Volts 2-Ohms

14.4 Volts 1-Ohm

14.4 Volts 4-Ohms Bridged

14.4 Volts 2-Ohms Bridged

16 Volts 4-Ohms

16 Volts 2-Ohms

16 Volts 1-Ohm

16 Volts 4-Ohms Bridged

16 Volts 2-Ohms Bridged

18 Volts 4-Ohms

18 Volts 2-Ohms

18 Volts 1-Ohm

18 Volts 4-Ohms Bridged

18 Volts 2-Ohms Bridged

Soft Start

Damping Factor

Signal to Noise Ratio (A-weighted)

THD & Noise

Variable Input Level Control (unbalanced)

Input Level Control (balanced)

Input Impedance (un-balanced)

Input Impedance (balanced)

Power / Diagnostic L.E.D.

Protection:

DC, Speaker Short, Thermal, Overload

Power Supply MOSFET

Audio Output MOSFET

Crossover:

Variable Low Pass Filter / 24dB

Variable Subsonic Filter / 24dB

Variable Bass EQ

Phase Shift (0 - +180 degrees)

Connector type:

Unbalanced Inputs (RCA)

Balanced Inputs (DIN)

Line Output (RCA)

Speaker Terminals (molded)

Power/Ground Terminals (molded)

Remote Bass Module

Mechanical:

Heat Sink Dimensions (L x W x H) inches

Fuse Rating 300 Amps 300 Amps 400 Amps 500 Amps 800Amps 1000 Amps

HIFONICS XXV SERIES MONO AND DUAL-MONO AMPLIFIER FEATURES

Note; All features subject to change without notice

XXV-THOR

1200 x 1

2300 x 1

3000 x 1

21.3 x 11.8 x 2.7

YES

>350

>95dB

<0.1

0.2V - 9V

0.04V - 18V

47k-Ohm

20k-Ohm

Yes

35Hz - 250Hz

10Hz - 35Hz

0dB - +10dB

Yes

10 ga.

0 ga.

XXVR-1

4000 x 1

3300 x 1

2200 x 1

5000 x 1

4300 x 1

3200 x 1

XXV-COLOSSUS

600 x 2

1100 x 2

1600 x 2

2200 x 1

3200 x 1

YES

>350

>95dB

<0.1

0.2V - 9V

0.04V - 18V

47k-Ohm

20k-Ohm

Yes

35Hz - 250Hz

10Hz - 35Hz

0dB - +10dB

Yes

10 ga.

XXVR-1

21.3 x 11.8 x 2.7

0 ga.

1900 x 2

1400 x 2

900 x 2

2800 x 1

3800 x 1

XXV-CYCLOPS

1500 x 1

2900 x 1

4000 x 1

24.4 x 11.8 x 2.7

YES

>350

>95dB

<0.1

0.2V - 9V

0.04V - 18V

47k-Ohm

20k-Ohm

Yes

35Hz - 250Hz

10Hz - 35Hz

0dB - +10dB

Yes

10 ga.

XXVR-1

0 ga. x 2

5100 x 1

4000 x 1

2600 x 1

6300 x 1

5200 x 1

3800 x 1

XXV-GOLIATH

1800 x 1

3200 x 1

5000 x 1

25.6 x 11.8 x 2.7

YES

>350

>95dB

<0.1

0.2V - 9V

0.04V - 18V

47k-Ohm

20k-Ohm

Yes

35Hz - 250Hz

10Hz - 35Hz

0dB - +10dB

Yes

10 ga.

XXVR-1

0 ga. x 2

6300 x 1

4500 x 1

3100 x 1

7600 x 1

5800 x 1

4400 x 1

XXV-SAMPSON

2600 x 1

4500 x 1

8000 x 1

37.8 x 11.8 x 2.7

YES

>350

>95dB

<0.1

0.2V - 9V

0.04V - 18V

47k-Ohm

20k-Ohm

Yes

35Hz - 250Hz

10Hz - 35Hz

0dB - +10dB

Yes

10 ga.

XXVR-1

0 ga. x 2

8900 x 1

5400 x 1

3500 x 1

10200 x 1

6700 x 1

4800 x 1

XXV-MAXXIMUS

2000 x 2

3500 x 2

5000 x 2

7000 x 1

10000 x 1

25.6 x 11.8 x 5.3

YES

>350

>95dB

<0.1

0.2V - 9V

0.04V - 18V

47k-Ohm

20k-Ohm

Yes

35Hz - 250Hz

10Hz - 35Hz

0dB - +10dB

Yes

10 ga.

0 ga. X 4

XXVR-1

6300 x 2

4500 x 2

3100 x 2

9000 x 1

12600 x 1

7600 x 2

6100 x 2

4600 x 2

12200 x 1

15200 x 1

16

Maxxsonics Limited Warranty

As the manufacturer of Maxxsonics, Crunch MB Quart and Hifonics car audio products,

Maxxsonics USA Inc. Warrants to the original consumer purchaser the amplifier to be free from

defects in material and workmanship for one (1) Year from date of purchase.

All other parts and accessories of the system are warrantied to be free from defects in

material and workmanship for one (1) year from date of purchase. Maxxsonics will

repair or replace at it’s option and free of charge during the warranty period, any system

component that proves defective in materials and workmanship under normal installation,

use and service provided that the product is returned to the authorized Maxxsonics dealer

from where it was purchased. A photo copy of the original receipt must accompany the

product being returned.

Valid purchase receipts will contain the name and address of the authorized reseller.

Any damage to the product as a result of misuse, abuse, accident, incorrect wiring,

improper installation, alteration of date code or bar code labels, revolution, natural

disaster, or any sneaky stuff because someone messed up, repair or alteration out side

of our factory or authorized service centers and any thing else you have done that you

should not have done is not covered.

This warranty is limited to defective parts and specifically excludes any incidental

or consequential damages connected therewith. This warranty is not to be construed

as an insurance policy.

Warranty on installation labor, removal, re-installation and freight charges are not the

responsibility of Maxxsonics USA Inc.

Warranty products damaged as a result of insufficient or improper packing materials

are not covered by this limited warranty and such damaged product will be returned

“as is” at the expense of the owner.

17

XXV

SERIES

Hifonics Sampson Owner's manual

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