Audio Control LC7i User manual

Brand: Audio Control

Model: LC7i

Category: Musical Instrument Amplifier

Type: User manual

Six Channel Line Output Converter with AccuBASS™ for

interfacing with factory installed audio systems

The LC7i transforms your under-performing factory audio sys-

tem into a supreme audio machine! It is a compact, six-channel,

high-performance active line output converter with AudioControl’s

patent-pending AccuBASS™ compensation that corrects the bass

roll-off present in many factory equipped audio systems. The LC7i

accepts up to six channels of speaker-level signal from factory-

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quality, after market low-noise, pre-amp level signal that can be

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ACR-1, remote level control, so you can adjust the output of the

bass channels from the convenience of the driver’s seat. With the

LC7i you have a high performance audio system while maintaining

the features, functions and

aesthetics of your factory

source unit!

This manual covers the

features, functions, instal-

lation and usage of the

LC7i so please take a few

moments to read through

it. If it’s easier, read 140

characters at a time, just

make sure to remember

where you stopped reading last time! We’ve

tried to cover all possible situations and have included lots of facts

and useful information. For more information visit our web site at

http://www.audiocontrol.com

Making Good Sound Great

page 1

Key features of the LC7i



AccuBASS™ bass compensation corrects the bass roll-off in factory



systems

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

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heating needs

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Quick Install Guide

Since some of you high energy enthusiasts will want to install

your LC7i on your own, we offer a few reminders in the following

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diagrams on page 9 as guidelines.

1. Physically mount the LC7i in a location that keeps it away

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tion that allows you access to the top panel controls.

7KH/&i needs to be installed in the signal path between

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DPSOL¿HUVDQGRUSURFHVVRUVDo not connect the LC7i between

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page 2

page 3

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your LC7i,QPDQ\FDVHV\RXFDQ¿QGIDFWRU\VSHDNHUOHDGVLQWKH

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Note: If your source unit has front, rear, and subwoofer speaker-

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If the source unit only has front and rear outputs, the AutoMode

circuitry in your LC7i automatically routes the Channel 2 input

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not familiar to you, quickly pack up your LC7i and run to your

nearest authorized AudioControl dealer to have them perform the

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the LC7i on automatically.

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6. Turn your amp gains fully down before turning on the system.

7. Turn on the system and level match your LC7i to your source

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matching see our technical videos at http://www.audiocontrol.com

8. If your authorized AudioControl dealer installs your LC7i,

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AudioControl products are, by nature, more technical than many

others and we spend a good deal of time training our dealers and

installers so we know our products will be installed correctly. We

do this so you will get the best possible results from your Audio-

Control purchases.

page 4

Under the Hood - Internal Jumpers

Here are the internal jumpers that allow you to customize the LC7i

for your particular installation.

1. Output Summing Jumpers:0DQ\RIWRGD\¶VEHWWHUIDFWRU\

VWHUHRV\VWHPVLQFOXGHVHSDUDWHO\DPSOL¿HGDQGFURVVHGRYHUWZHHW-

ers, mid-ranges, and subs. If you are going to add your own amps

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separate signals into a single full-range signal for the new system.

With the LC7i, summing is a snap. The LC7i has internal jumpers

that allow you to select which input signals will be summed to the

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there will also be a corresponding green indicator light on the top

front of the LC7i. The shipped-from-the-factory setting is the non-

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Ground Isolation Selector:2FFDVLRQDOO\DOWHUQDWRUQRLVHPD\

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ing different grounding schemes. To help in this situation, we have

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Isolated position, which usually gives the best results.

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system is actually off. To prevent this from turning your system

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factory system communicated via the factory amp and speakers, it

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4. AutoMode: Some cars have unusual signals on their speaker

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page 5

,QWHUQDO-XPSHU&RQ¿JXUDWLRQ

A Guided Tour of LC7

c Speaker-level Inputs: The LC7i has six speaker-level inputs.

These inputs get their signals from the speaker-level outputs of

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has front, rear, and subwoofer speaker-level outputs, connect them

to the three sets of inputs on your LC7i. If the source unit only has

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output.

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speaker inputs for the presence of signal. If your installation does

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c d hgfei

lkj

d AccuBASS™ Controls: The threshold and level controls let

you determine when the AccuBASS™ circuit activates and the

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e Ground:&RQQHFWWRDJRRGYHUL¿HGFKDVVLVJURXQG:DUQ-

ing: factory radio ground wires already have multiple devices con-

nected to them and are not recommended.

f +12V Power:&RQQHFWWRDJRRGVRXUFHRIYROWSRZHU

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in case of a short to ground or an installation mishap.

page 6

g Remote In: In some installations, you may not want to use

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YROWUHPRWHLQ\RXVKRXOGVHWWKHLQWHUQDO*72MXPSHUVHH

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car’s network system from turning the system on unexpectedly.

h Remote Out:6XSSOLHVYROWV³´ZKHQWKH/&i is pow-

ered up, and is used to turn on external devices like signal proces-

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i Maximized Indicator:7KLVEULJKWO\FRORUHG/('LQGLFDWHV

when the signal level is just below clipping within your LC7i.

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when your system is playing at its maximum volume level.

j Power: If you have connected all of your power wires cor-

rectly, this light should be bright red when your system turns on.

k Optional (ACR-1) Dash Mounted Control Input:<RXFDQ

add a dash control that allows you to set remotely the level of the

subwoofer.

l Pre-Amp Outputs: These RCA plugs should be connected to

the next component after the LC7i, such as a crossover or ampli-

¿HU'RQRWFRQQHFWDQ\VSHDNHUVGLUHFWO\WR\RXU/&i outputs.

Output Levels: These knobs allow you to adjust the signal

level from your source unit to match the input of your after-market

DPSOL¿HUV,GHDOO\\RXZDQWWRNHHSWKHRXWSXWRIWKH/&i high

DQGNHHSWKHDPSOL¿HUJDLQVDVORZDVSRVVLEOH

Channel Summed Indicators:8QGHUWKHFRYHURI\RXU/&i

are jumpers that will allow you to sum selected channels into the

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systems with actively crossed over speaker systems. These indica-

WRU/('¶VOHW\RXNQRZZKLFKFKDQQHOVDUHEHLQJVXPPHGLQWRWKH

main inputs.

page 7

Awesome Information

AccuBASS™ Processing

)DFWRU\LQVWDOOHGDPSOL¿HUVDQGVSHDNHUVDUH127GHVLJQHGWR

reproduce bass frequencies at high volume levels. These factory

systems actually remove the bass when you turn up the volume!

AudioControl developed the patent pending AccuBASS™ circuit

to restore the bass that the factory takes away. After a quick and

easy one-time setting, the AccuBASS™ circuit adds the bass just

DVWKHIDFWRU\V\VWHPUROOVRII<RXJHWVPRRWKVHDPOHVVDQGURFN

solid bass response regardless of volume level. The chart below

shows how the AccuBASS™ operates to correct for the factory

bass roll-off.

Setting the Accu-

BASS™ is a simple one-

time operation:

After you have hooked

up the system and are

listening to music, play

something with a good

bass line, and set the vol-

ume at low.

2QWKH/&i, set the Ac-

FX%$66/HYHO&RQWUROWRWKHSRVLWLRQ

7XUQWKH7KUHVKROGIXOO\GRZQFRXQWHUFORFNZLVH

1RZWXUQXSWKHYROXPHRQ\RXUVWHUHRXQWLO\RXKHDUWKHEDVV

start to drop out in relationship to the high frequencies

and leave the

volume there.

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come back up and leave it in that position.

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tion you want.



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$FFX%$66ZLOOWDNHRYHUDQGUHVWRUHWKHEDVV<RXKDYH

smooth, seamless bass at all volumes and you can even use the

level control to give a little extra kick to the bass if you want. It’s

your music your way!

page 8

More Highlights

Summed Outputs

The LC7iKDVWKHFDSDELOLW\WRFRPELQHWRJHWKHUPXOWLSOH

RU LQSXWVLJQDOVIURPWKHIDFWRU\VRXUFHXQLWLQWRFKDQQHOV,Q

some vehicles there is an actively crossed-over tweeter, midrange,

and woofer all in the front of the vehicle. The LC7i lets you take

all of those signals and sum them together to get a high-quality,

full-range, pre-amp signal. Simply move the summing jumper

ORFDWHGXQGHUWKHFRYHUIRUWKHGHVLUHGFKDQQHOLQWRWKH³6XP´SR-

VLWLRQ,IWKHJUHHQ/('IRUWKDWFKDQQHOLVRQ\RXNQRZLWLVEHLQJ

summed into the main output.

AutoMode

We have equipped your LC7iZLWKDQ$XWR0RGHIHDWXUHWKDWLV

GHVLJQHGWRIHHGVLJQDOWRWKHFKDQQHOVHFWLRQZKHQWKHIDFWRU\

V\VWHPRQO\KDVIURQWDQGUHDURXWSXWV$XWR0RGHWDNHVWKHFKDQ-

QHOUHDULQSXWVLJQDODQGDXWRPDWLFDOO\IHHGVLWWRWKHFKDQQHO

outputs to drive a subwoofer amp and crossover. This means your

LC7iZLOODFFHSWWZRLQSXWFKDQQHOVVD\IURQWDQGUHDUDQGJLYH

\RXWKUHHRXWSXWFKDQQHOVIURQWUHDUDQGVXE

ACR-1 Dash Control (Purchased Separately)

The ACR-1 is a remote that gives you control over the level of

WKHFKDQQHO6XEZRRIHURXWSXWVR\RXFDQDGMXVWWKHEDVVOHYHO

from the driver’s seat.

Placement and Mounting

The ACR-1 dash control may be mounted under the dash using

its own bracket or through a custom hole in the dash. It should be

ZLWKLQUHDFKRIWKHGULYHUDQGLQDVSRWZKHUHWKH/('LVSODLQO\

YLVLEOH<RXFRXOGPRXQWLWLQWKHWUXQNEXWWKDWGHIHDWVWKHZKROH

purpose.

Bracket Installation

The dash control mounts with two screws, which attach to the

underside of the dashboard. Slide under the dash and place the

dash control in its mounting position, mark the two mounting

holes, drill pilot holes, and secure with two screws.

page 9

Dash Control Assembly

Custom Installation

)RUWKDWFXVWRP¿QLVKHGORRNWKHGDVKFRQWUROFDQEHÀXVK

PRXQWHGGLUHFWO\RQWKHGDVKERDUGRUDQ\ZKHUHHOVH'LVDV-

semble the dash control from the mounting bracket. Start

E\SXVKLQJWKH/('IURPLWVKROGHUIROORZHG

by removing the circuit board and rotary

FRQWUROIURPWKHEUDFNHW'ULOOD

´KROHLQWKHGDVKERDUG

for the control along with a

´KROHIRUWKHORFNWDEDQG

D´KROHIRUWKH

/('KROGHU5HDV-

semble the ACR-1

components in

their new custom

location.

page 10

Basic Factory Upgrade System

If the factory radio doesn’t have a bass output, the LC7i will

provide it via automode.

Upgrade for Factory System with Remote Mounted Factory

Amplifier

page 11

Block Diagram of the LC7i

)HHOLQJORVW"+HUH¶VDQLQWHUQDO³URDGPDS´WRKHOS\RXRXW7KLV

VLPSOL¿HGEORFNGLDJUDPLVDPDSRIWKHSDWKVWKHVLJQDOVWDNH

through the LC7i. With this map you can follow each input through

the processor. If you have an issue with the hook-up of your LC7i

and need to call for technical assistance, please have this diagram

available. We can help you trace the problem to get your system up

and running.

page 12

The WARRANTY

3HRSOHDUHVFDUHGRIZDUUDQWLHV/RWVRI¿QHSULQWPRQWKVRI

waiting around. Well, fear no more, this warranty is designed to

make you rave about us to your friends. It’s a warranty that looks

out for you and helps you resist the temptation to have your friend,

³ZKR¶VJRRGZLWKHOHFWURQLFV´WU\WRUHSDLU\RXU$XGLR&RQWURO

product. So go ahead, read this warranty, then take a few days to

enjoy your new LC7i before going on-line to register your unit at

www.audiocontrolregistration.com. We also look forward to your

comments while you are registering your LC7i³&RQGLWLRQDO´

doesn’t mean anything ominous. The Federal Trade Commission

tells all manufacturers to use the term to indicate that certain condi-

tions have to be met before they’ll honor the warranty. If you meet

all of these conditions, we will warranty all materials and work-

manship on the LC7iIRURQH\HDUIURPWKHGDWH\RXERXJKWLW¿YH

\HDUVLILWLVLQVWDOOHGE\DQDXWKRUL]HG8QLWHG6WDWHV$XGLR&RQWURO

GHDOHUDQGZHZLOO¿[RUUHSODFHLWDWRXURSWLRQGXULQJWKDWWLPH

Here are the conditional conditions:

<RXKDYHWRJRWRZZZDXGLRFRQWUROUHJLVWUDWLRQFRPZDUUDQW\

and register your LC7iZLWKLQGD\VDIWHUSXUFKDVH

<RXPXVWNHHS\RXUVDOHVUHFHLSWIRUSURRIRISXUFKDVHVKRZ-

ing when and from whom the unit was bought. We’re not the only

ones who require this, so it’s a good habit to get into with any

major purchase.

<RXU/&i must have originally been purchased from an au-

WKRUL]HG$XGLR&RQWUROGHDOHU<RXGRQRWKDYHWREHWKHRULJLQDO

owner, but you do need a copy of the original sales slip.

<RXFDQQRWOHWDQ\ERG\ZKRLVQ¶W$WKH$XGLR&RQWUROIDFWR-

U\%VRPHERG\DXWKRUL]HGLQZULWLQJE\$XGLR&RQWUROWRVHUYLFH

your LC7i,IDQ\RQHRWKHUWKDQ$RU%PHVVHVZLWK\RXU/&i,

that voids your warranty.

7KHZDUUDQW\LVDOVRYRLGLIWKHVHULDOQXPEHULVDOWHUHGRU

removed, or if the LC7iKDVEHHQXVHGLPSURSHUO\1RZWKDWPD\

VRXQGOLNHDELJORRSKROHEXWKHUHLVDOOZHPHDQE\LW8QZDU-

UDQWHGDEXVHLV$SK\VLFDOGDPDJHGRQ¶WXVHWKH/&i for a car

MDFN%LPSURSHUFRQQHFWLRQVYROWVLQWRWKHSRZHUMDFNFDQ

IU\WKHSRRUWKLQJ&VDGLVWLFWKLQJV7KLVLVWKHEHVWSURGXFW

page 13

we know how to build, but if you mount it to the front bumper of

\RXUFDUVRPHWKLQJZLOOJRZURQJ,IDQDXWKRUL]HG8QLWHG6WDWHV

AudioControl dealer installs the LC7iWKHZDUUDQW\LV¿YH\HDUV

$VVXPLQJ\RXFRQIRUPWRWKURXJKDQGLWUHDOO\LVQ¶WDOOWKDW

KDUGWRGRZHJHWWKHRSWLRQRI¿[LQJ\RXUROGXQLWRUUHSODFLQJLW

with a new one.

LEGALESE SECTION

This is the only warranty given by AudioControl. This warranty

JLYHV\RXVSHFL¿FOHJDOULJKWVWKDWYDU\IURPVWDWHWRVWDWH3URP-

ises of how well the LC7i will perform are not implied by this war-

UDQW\2WKHUWKDQZKDWZHKDYHFRYHUHGLQWKLVZDUUDQW\ZHKDYH

no obligation, express or implied. Also, we will not be obligated

for direct or indirect consequential damage to your system caused

by hooking up the LC7i. Failure to register warranty information

negates any service claims.

page 14

LC7

SPECIFICATIONS

$OOVSHFL¿FDWLRQVDUHPHDVXUHGDW9'&VWDQGDUGDXWRPR-

WLYHYROWDJH$VWHFKQRORJ\DGYDQFHV$XGLR&RQWUROUHVHUYHV

WKHULJKWWRFKDQJHRXUVSHFL¿FDWLRQVOLNHRXU3DFL¿F1RUWKZHVW

weather although we are working on it.

0D[LPXPVSHDNHUOHYHOLQSXW ... 400 watts per channel at 4 ohms

0D[LPXPRXWSXWOHYHO ..................................................... 9UPV

2XWSXWJDLQ ......................................................................G%

Frequency response ................................................... +]N+]

Total harmonic distortion .....................................................0.01%

Input Impedance ............................................................ .RKPV

2XWSXW,PSHGDQFH ......................................................... 2KPV

Power supply ..............................+LJKKHDGURRP3:0VZLWFKLQJ

Power draw ........................................................................ P$

Recommended fuse rating ..................................................$PSV

Remote trigger max output current ..................................... 1 Amp

Size ....................................................... ´:[´'[´+

Weight .................................................................................... OEV

Patent .................................................................................Pending

$XGLR&RQWURO,QF$OOULJKWVUHVHUYHG

$XGLR&RQWURO0DNLQJ*RRG6RXQG*UHDW/&i$FFX%$66*72DQG$XWR0RGHDUH

all trademarks of AudioControl Inc. This manual was conceived, designed, and written

ZKLOHRQDURDGWKURXJKWKH3DFL¿F1RUWKZHVWRQDVSHFWDFXODUO\UDUHVXQQ\DQGFORXG-

less day. The top was down and we were banging our head to 80’s metal!

page 15

Making Good Sound Great

WK$YHQXH:HVW

6HDWWOH:$86$

3KRQH)D[

www.audiocontrol.com

31

Making Good Sound Great

Audio Control LC7i User manual

Brand: Audio Control

Model: LC7i

Category: Musical Instrument Amplifier

Type: User manual

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Audio Control LC7i User manual

Audio Control LC7i User manual

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