Rolls MX902 User manual

Brand: Rolls

Model: MX902

Category: Audio mixers

Type: User manual

MX902

Professional Compact Mixer

-OO +15

LEVEL

-OO +15

LEVEL

HDPHN

0 10

AUX 2

RETURN

0 10

AUX 1

RETURN

AUX 2 RET

CLIP

PWR

HDPHN

OUT

MAIN

MX902

0 10

-15 +15

AUX 1

0 10

AUX 2

LOW

12.5 k

HIGH

L R

BAL

-15 +15

LEVEL

-OO +15

8/9

0 100 100 10

0 10

-15 +15

AUX 1

0 10

AUX 2

LOW

12.5 k

HIGH

L R

PAN

-15 +15

LEVEL

-OO +15

-15 +15

AUX 1

0 10

AUX 2

LOW

12.5 k

HIGH

L R

PAN

-15 +15

LEVEL

-OO +15

-15 +15

AUX 1

0 10

AUX 2

LOW

12.5 k

HIGH

L R

PAN

-15 +15

LEVEL

-OO +15

-15 +15

AUX 1

0 10

AUX 2

LOW

12.5 k

HIGH

L R

BAL

-15 +15

LEVEL

-OO +15

-15 +15

AUX 1

0 10

AUX 2

LOW

12.5 k

HIGH

L R

BAL

-15 +15

LEVEL

-OO +15

3 4/5

6/7

+50

MIC 1

MIC 2

MIC 3

LINE 1

-6 dB

LINE 2

-6 dB

LINE 3

-6 dB

5/RIGHT

7/RIGHT 9/RIGHT

4/LEFT/MONO

6/LEFT/MONO 8/LEFT/MONO

AUX 1

SEND

AUX 2

SEND

LEFT OUT

RIGHT OUT

AUX 1

RET LEFT/MONO

AUX 1

RET RIGHT

PHANTOM

PWR

+50

12 - 18 VDC

POWER

TRIM

OWNERS MANUAL

Thank you for purchasing the ROLLS MX902 Professional Mixer. This unit is designed and manufactured to provide

years of useful service. Please read the following manual carefully.

The MX902 is a compact mixer for small mixing applications. It has an external power supply adding to it's already

quiet and transparent operation. An important feature of the MX902 is it's ability to operate on +12 to +16 Volts DC.

This means that the unit is perfect for mobile sound reinforcement where a car or camera battery may be the only

source of power. The MX902 is in a durable steel chassis, and may be optionally rackmounted.

FEATURES

• Runs on +12 Volts DC - perfect for mobile operation

• 3 XLR Mic Inputs each with trim control

• 9 Total 1/4" unbalanced inputs, RCA Tape Inputs

• +24 Volt Phantom Power

• 2-band EQ

• 2 Auxiliary Sends; 1 pre-fade, 1 post-fade

• 2 Stereo Auxiliary Returns

• Balanced 1/4" Outputs

• Tape Outputs are pre-Master fader

• Tape Inputs share the Aux 1 bus

• Headphone Output w/level control

INSPECTION

1. Unpack and inspect the MX902 box and package.

If obvious physical damage is noticed, contact the carrier immediately to make a damage claim. We suggest saving the

shipping carton and packing materials for safely transporting the unit in the future.

2. Please complete the Warranty Registration Card and return it to the factory.

TABLE OF CONTENTS

Introduction ................................................................................................................................ 1

Features ................................................................................................................................

Inspection ................................................................................................................................

Front Panel Description ................................................................................................................... 2

Channel Descriptions ...................................................................................................................

The EQ Section...................................................................................................................

The Auxiliary Section .........................................................................................................

Pan/Bal Controls .................................................................................................................

Level Control ...................................................................................................................

Master Section ...................................................................................................................

Auxiliary Return Controls ....................................................................................................

Headphone ...................................................................................................................

Master Level ...................................................................................................................

Jack Panel Description ................................................................................................................... 3

Channel Inputs ...................................................................................................................

Trim Controls ...................................................................................................................

Main Right and Left Outputs ...............................................................................................

Auxiliary Outputs and Inputs ...............................................................................................

Phantom Powering ..............................................................................................................

Operation ................................................................................................................... 4

Signal Processor Connection ........................................................................................................... 5

Live Example ...................................................................................................................

Schematic ................................................................................................................... 6

Specifications and Warranty ............................................................................................................. Rear Cover

Front Panel

CHANNEL DESCRIPTIONS

HIGH: Boosts or cuts the 12.5 kHz or high frequency portion of the signal.

LOW: Boosts or cuts the 60 Hz or low frequency portion of the signal.

AUX 2: Controls the amount of post-fader signal that is sent to the Aux 2 bus

and output.

AUX 1: Controls the amount of pre-fader signal that is sent to the Aux 1 bus

and output.

PAN: Varies the amount of relative signal sent from Channels’ 1 through 3 to

the Main Level control.

BAL: Varies the amount of stereo signal from channels 5/6 through 8/9 to the

Main Level control.

LEVEL: Controls the overall output signal level of the channel.

MASTER DESCRIPTIONS

AUX 2 RETURN: Controls the amount of input signal from the RCA Aux 2 Return

jacks.

AUX 1 RETURN: Controls the amount of input signal from the Aux 1 Right and Left

Return jacks.

HEADPHONE LEVEL: Controls the amount of level of signal from the Headphone

Output.

HEADPHONE OUTPUT: 1/4” TRS stereo jack for connection to stereo headphones.

NOTE: Do not use a mono 1/4” TS plug in this jack. Doing so may result

in serious damage to the MX902.

MAIN LEVEL: Controls the amount of signal sent to the Right/Left output jacks.

-OO +15

LEVEL

-OO +15

LEVEL

HDPHN

0 10

AUX 2

RETURN

0 10

AUX 1

RETURN

AUX 2 RET

CLIP

PWR

HDPHN

OUT

MAIN

MX902

12 - 18 VDC

POWER

0 100 10

-15 +15

AUX 1

0 10

AUX 2

LOW

12.5 k

HIGH

L R

PAN

-15 +15

LEVEL

-OO +15

-15 +15

AUX 1

0 10

AUX 2

LOW

12.5 k

HIGH

L R

BAL

-15 +15

LEVEL

-OO +15

3 4/5

Jack Panel Description

+50

MIC 1

MIC 2

MIC 3

LINE 1

-6 dB

LINE 2

-6 dB

LINE 3

-6 dB

5/RIGHT

7/RIGHT 9/RIGHT

4/LEFT/MONO 6/LEFT/MONO 8/LEFT/MONO

AUX 1

SEND

AUX 2

SEND

LEFT OUT

RIGHT OUT

AUX 1

RET LEFT/MONO

AUX 1

RET RIGHT

PHANTOM

PWR

+50

TRIM

Channels 1 through 3

MIC INPUT: XLR input jack for microphone level or balanced signals.

TRIM: Controls the amount of input gain from +6 to +50 dB.

LINE: 1/4” unbalanced input for instrument of line level signals.

PHANTOM POWER SWITCH: Engages the +24 volts of phantom power, used to power con-

denser microphones.

Channels 4/5 through 8/9

LEFT: 1/4” unbalanced input for instrument or line level signals.

RIGHT: 1/4” unbalanced input for instrument or line level signals.

Master

AUX 1 and 2 SEND: 1/4” unbalanced jacks for sending out the signals present on the Aux 1 and 2

buses.

RIGHT OUT: 1/4” TRS balanced main right output.

LEFT OUT: 1/4” TRS balanced main left output.

AUX 1 RET. RIGHT and LEFT: 1/4” unbalanced jacks for receiving stereo signals sent from the

Aux 1 bus (usually through an effects processor).

AUX 2 RET. Stereo RCA jacks for receiving stereo signals send from the Aux 2 bus, or may be

used as an auxiliary stereo source input such as a CD or cassette player.

Side Panel

12 - 18 VDC: For connection to a sleeve positive, DC power adapter.

POWER Switch: Applies power to the MX902 when connected to a proper power source.

+50

MIC 1

MIC 2

MIC 3

LINE 1

-6 dB

LINE 2

-6 dB

LINE 3

-6 dB

5/RIGHT

7/RIGHT 9/RIGHT

4/LEFT/MONO 6/LEFT/MONO 8/LEFT/MONO

AUX 1

SEND

AUX 2

SEND

LEFT OUT

RIGHT OUT

AUX 1

RET LEFT/MONO

AUX 1

RET RIGHT

PHANTOM

PWR

+50

to Effects Input

from

Right Output

from

Left Output

STEREO EFFECTS DEVICE

SIGNAL PROCESSOR CONNECTION

Use Aux 1 Output to connect to the Input of your signal processor which may be an echo unit, a

reverb, or multi effects unit. Aux 1 is used because the signal is taken after the channel fader

which is a typical setup for a signal processor. The right and left outputs of the processor are then

connected to the Aux 1 Right and Left Return jacks. The level of signal going into the signal pro-

cessor is controlled by the Aux 1 control on each individual MX902 channel, and the signal

processor’s input level control. The level of signal going back into the MX902 is controlled by Aux 1

Return Level control on the MX902 front panel, and by the signal processor’s output level control.

+50

MIC 1

MIC 2

MIC 3

LINE 1

-6 dB

LINE 2

-6 dB

LINE 3

-6 dB

5/RIGHT

7/RIGHT 9/RIGHT

4/LEFT/MONO 6/LEFT/MONO 8/LEFT/MONO

AUX 1

SEND

AUX 2

SEND LEFT OUT

RIGHT OUT

AUX 1

RET LEFT/MONO

AUX 1

RET RIGHT

PHANTOM

PWR

+50

VOLUME 1

VOLUME 2

OWER

MPLIFIER RA2100B

MAINS AMPLIFIER

MONITOR AMPLIFIER

LIVE CONNECTION EXAMPLE

The diagram shown below is a possible connection scheme for a live application. Connect instru-

ments and microphones to the appropriate input jacks. If condenser microphones requiring phan-

tom power are being used, press the Phantom Power switch in. Aux 2 is used as a monitor output

because the signal is taken before the channel fader - this is typically a monitor send. Aux 1 may

be connected to a signal processor as shown on page 4.

Connect the Right and Left main outputs to the main amplification system. If the system being

used is mono, either MX902 Right or Left output may be used.

SCHEMATIC

Sheet: 1 of 1

ROLLS CORPORATION

5968 South 350 West

Salt Lake City, UT 84107

Title: MX902 12v Mic/Line Mixer

Size:

Date: 2-Aug-2000

+12V

R I G H T

L E F T

A U X 1

V O L U M E

P A N

V O L U M E

C H A N N E L S 1 T O 3

A U X 2

A U X 1 O U T

+12V

6 O H z

1 2 K H z

+12V

-12V

C H 1

+12V

A U X 1 O U T

A U X 2 O U T

T A P E I N

R I G H T

+12V

+24V

A U X 2 I N

1 O F 3

O V L D

+12V

L E F T

V O L U M E C H A N N E L S 1 T O 3

+12V

1 O F 3

+12V

B A L

+12V

A U X 1

V O L U M E

L E F T I N

R I G H T I N

A U X 2

C H A N N E L S 4 T O 6

-12V

+12V

R I G H T

+12V

H E A D P H O N E

VCC

BIAS

+12v

+12V

+24V

R 1 1 6

3 3 K

R 1 2 7

1 M

R 1 2 8

4 . 7 K

R 1 2 9

4 . 7 K

R 1 3 0

4 . 7 K

R 1 3 1

4 . 7 K

C 1 1 1

1 0 U

C 1 1 3

. 0 4 7

R 1 1 8 3 3 K

P 1 0 6

P 1 0 0 K

R 1 3 2

1 0 K

R 1

1 0 0

R 2

1 0 K

R 1 2 1 0 K

R 1 5

3 3 K

R 1 8

5 1

R 5 7

1 K

R 5 8

1 0 0 K

1 K

R 6 2

1 0 0 K

1 K

C 2

1 U

C 7

1 U

C 9

1 0 U

P 1 A

C 1 3

2 5 P F

C 1 7

2 7 P F

4 6

P 4 B

1 3

R 1 1 2

1 0 K

C 1 0 3

4 7 0 P F

C 1 0 4

4 7 0 P F

C 1 0 5

1 U

C 1 0 6

4 7 0 U

C 1 0 7

2 7 P F

C 1 0 9

2 7 P F

1 2

J 1 0 1

R 1 0 1

6 . 8 K

R 1 0 7

3 0

R 1 1 0

2 K

R 1 1 1

2 K

R 1 0 8

1 0 0

R 1 1 3

1 0 K

R 1 0 9

4 . 7 K

R 2 0

5 1

1 0 K

R 4 7

1 0 K

1 K

Q 1 0 1

2 N 5 0 8 7

Q 1 0 2

2 N 5 0 8 7

C 6

2 7 P F

R 1 7

3 3 K

R 1 1 9 1 0 K

R 5 5

1 0 K

R 5 3

1 0 K

C 1 8

1 U

R 6 0

1 0 0 K

C 2 0

1 U

R 6 4

1 0 0 K

R 5

3 3 K

J 5

P H O N E 1 / 4

R 2 0

5 1

R 8

5 1

C 1 2 7 P F

R 1 6

4 . 7 K

R 6 4 . 7 K

R 1 1 7

3 . 3 K

J 1 0 2

P H O N E 1 / 4

P 1 0 7

C 1 0 K

P 1 0 5

P 1 0 0 K

1 3

P 1 0 1 A

P 1 0 4

P 1 0 0 K

P 1 0 3

P 1 0 0 K

P 1 0 2

P 1 0 0 K

P 1 B

4 6

P 3 B

1 3

P 3 A

J 3

J 1

P H O N E 1 / 4

J 2

P H O N E 1 / 4

S W 1 A

D P D T

R 6 7

4 . 7 K

R 7 4

1 0 0 K

R 7 5

4 . 7 K

C 1 9

2 7 P F

C 2 5

1 K U F

C 2 7

1 U

D 1

L D S G

J 9

J A P D C

J 6 0 2

P H O N E 1 / 4

J 6 0 1

P H O N E 1 / 4

R 6 3 2

3 3 K

R 6 3 3

2 2 K

R 6 3 4

2 2 K

R 6 3 5

2 2 K

4 6

P 6 0 1 B

C 6 1 6

1 0 U

R 6 3 6

3 . 3 K

R 6 3 7

3 3 K

P 6 0 6 B

C 6 2 1

. 0 0 1

R 6 4 6

1 M

R 6 4 12 2 K

P 6 0 5 B

C 6 1 8

. 0 4 7

R 6 4 7

4 . 7 K

R 6 4 9

4 . 7 K

R 6 5 0

1 0 K

P 6 0 4

P 1 0 0 K

R 6 4 8

4 . 7 K

R 6 5 1

1 0 K

P 6 0 3

P 1 0 0 K

R 6 2 6

4 . 7 K

R 6 2 7

4 . 7 K

P 6 0 2

P 1 0 0 K

C 6 1 2

. 0 4 7

P 6 0 5 A

1 3

P 6 0 1 A

P 6 0 6 A

R 6 1 4

3 3 K

R 1 1 4

1 0 K

R 3 7

3 3 K

R 4 2 2 K

4 5 6 0

R 4 0

1 0

C 6 2 3

4 7 U

1 0

D 2

L D R R

R 7 0

1 0 K

D 3

L D R R

R 6 8

4 . 7 K

C 5

1 0 U

U 6 0 2 B

4 5 6 0

U 6 0 2 A

4 5 6 0

U 6 0 3 A

4 5 6 0

U 4 0 1 B

4 5 6 0

U 1 0 1 B

4 5 6 0

U 1 0 2 A

4 5 6 0

U 2 B

4 5 6 0

U 2 A

4 5 6 0

U 3 B

4 5 6 0

U 3 A

4 5 6 0

U 5 B

4 5 6 0

U 4 B

4 5 6 0

C 6 2 8

1 0 U

C R 3

1 N 4 1 4 8

C 2 1

1 U

C 2 4

1 U

C R 7

C 6 2 5

1 U

C 2 3

1 U

S W 2 A

D P D T

R 6 5 8

1 0 0 K

R 3

1 0 0 K

C R 4

1 N 4 1 4 8

R 6 5 7

1 0 0 K

U 2 0 1 A

4 5 6 0

C 6 3 5

1 U

C 6 3 6

1 U

C 6 3 7

1 U

C 4

1 0 U

R 7 3 3 K

R 6 2 4

1 M

C 6 3 3

1 U

C 6 3 4

1 U

U 4 0 1 A

4 5 6 0

R 7 1

4 7 K

C 2 9

1 2 0 P F

R 1 2 0

1 0 K

R 1 2 4

1 0 K

R 6 4 4

1 0 K

R 6 4 5

1 0 K

R 6 3 8

1 0 K

R 6 4 0

1 0 K

R 6 1 7

1 0 K

R 6 1 8

1 0 K

R 6 2 2

1 0 K

R 6 2 3

1 0 K

R 1 0 6

4 . 7 K

R 6 5 6

1 0 0 K

R 6 5 2

1 0 0 K

R 6 9

4 7 K

C 6 1 0

1 0 U

R 6 1 5

3 . 3 K

R 6 1 6

3 3 K

U 6 0 3 B

4 5 6 0

R 6 2 5

4 . 7 K

R 1 0 3

1 0 K

R 1 0 4

1 0 K

C 1 0 2

1 U

C R 5

1 N 4 0 0 1

Q 1 0 7

M P S A 0 5

J 6

P H O N E 1 / 4

C 6 3 8

1 U

R 3 8

2 K

U 1 0 2 B

4 5 6 0

C 1 1 0

1 0 U

C 1 0 8

1 0 2

C 1 1 2

2 7 P F

C 6 1 1

2 7 P F

C 6 1 7

2 7 P F

C 1 6

2 7 P F

C 1 5

2 7 P F

C 3

5 0 3

C 1 1 8

1 U

R 1 0 2

6 . 8 K

C 1 1 7

1 U

C 1 0 1

1 U

R 1 2 6

1 0 K

R 1 2 2

1 0 K

R 1 2 3 2 2 K

C 1 1 6 . 0 0 1

C 6 1 5 . 0 0 1

R 6 1 9 2 2 K

Q 1 0 8

2 N 3 9 0 4

C 2 6

4 7 U

Q 1 0 3

2 N 3 9 0 4

Q 1 0 4

2 N 3 9 0 4

J 7

P H O N E 1 / 4

C 6 2 4

J 8 A

R C A P C

J 8 B

R C A P C

D o c u m e n t N u m b e r :

M X 9 0 2 . s c h

R e v : A

U 6 A

R 4 3

3 3 K

C 1 2

1 0 U

R 4 4

R 3 9

3 3 K

R 4 1

3 3 K

P 2 B

U 6 B

P 2 A

R 6 1

R 1 1

1 0 0

U 4 A

P H O N E 1 / 4

U 5 A

C 1 0

1 0 U

P H O N E 1 / 4

L E F T

R 5 2

1 0 K

L E F T

U 1 B

P 4 A

R 5 1

1 0 K

C 1 4

U 1 A

R 5 4

1 0 K

R 5 6

1 0 K

C R 8

1 N 4 1 4 8

LIMITED WARRANTY

This product is warranted to the original consumer purchaser to be free from defects in materials and

workmanship under normal installation, use and service for a period of one (1) year from the date of pur-

chase as shown on the purchaser’s receipt.

The obligation of Rolls Corporation under this warranty shall be limited to repair or replacement (at

our option), during the warranty period of any part which proves defective in material or workmanship under

normal installation, use and service, provided the product is returned to Rolls Corporation, TRANSPORTA-

TION CHARGES PREPAID. Products returned to us or to an authorized Service Center must be accompa-

nied by a copy of the purchase receipt. In the absence of such purchase receipt, the warranty period shall be

one (1) year from the date of manufacture.

This warranty shall be invalid if the product is damaged as a result of defacement, misuse, abuse,

neglect, accident, destruction or alteration of the serial number, improper electrical voltages or currents,

repair, alteration or maintenance by any person or party other than our own service facility or an authorized

Service Center, or any use violative of instructions furnished by us.

This one-year warranty is in lieu of all expressed warranties, obligations or liabilities. ANY IM-

PLIED WARRANTIES, OBLIGATIONS, OR LIABILITIES, INCLUDING BUT NOT LIMITED TO THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE,

SHALL BE LIMITED IN DURATION TO THE ONE YEAR DURATION OF THIS WRITTEN LIMITED

WARRANTY. Some states do not allow limitations on how long an implied warranty lasts, so the above

limitation may not apply to you.

IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR CONSEQUEN-

TIAL DAMAGES FOR BREACH OF THIS OR ANY OTHER WARRANTY, EXPRESSED OR IM-

PLIED, WHATSOEVER. Some states do not allow the exclusion or limitation of special, incidental or

consequential damages so the above limitation or exclusion may not apply to you. This warranty gives you

specific legal rights, and you may also have other rights which vary from state to state.

ROLLS CORPORATION

SALT LAKE CITY, UTAH

4/96

SPECIFICATIONS

Input Impedance: 10kW bal./unbal.

Output Impedance: 50W

Max Input Level: +4 dBm XLR, +10 dBV 1/4”

Output Level: +12 dBV max

Max Gain: 80 dB XLR, 74 dB 1/4”

Phantom Power: +24 Volts DC

EQ Centers: High: 12.5kHz

Low: 60Hz

S/N Ratio: 128 dB

THD: <.003%

IMD (SMPTE): <.003%

CMRR: 52 dB (typ.) Mic

Size: 9” x 10” x 1.64”

Weight: 3 lbs.

Power: +12 VDC, 150 mA

Rolls MX902 User manual

Brand: Rolls

Model: MX902

Category: Audio mixers

Type: User manual

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Rolls MX902 User manual

Rolls MX902 User manual

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