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Adjustable from  20Hz to 250Hz with a slope of 24dB per

octave.This allows for the adjustment of the upper point

of the frequency bandwidth and the respective subwoofer.

Remote Dash-mount Gain Control

LA

-2488D

Features and Controls

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2

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12

Power LED Indicator

This LED is illuminated when the REMOTE ON 

system is turned on.

Crossover Low Pass Filter

Adjustable from 15Hz to 40Hz with a slope of 24dB per

octave.This allows for the attenuation of frequencies that

are mostly inaudible and cause unnecessary strain on the

amplifier.

High Pass Subsonic Filter

Phase Shift Switch

Input Level Control

Use this control to match the output of the head unit 

to the amplifier. If distortion is present, reduce the 

setting of this control.

Power Supply Terminals

Protects the amplifier as well as the automobile electrical 

system from short circuit conditions.

Fuse

These terminals are 14K Gold plated for high conductivity 

and minimum impedance loss. The terminals face 

upwards for easy wiring in tight situations.

Speaker Terminals

This unit is provided with gold-plated RCA input 

jacks. Using RCA-RCA type patch cords, connect 

these inputs to the RCA outputs from your head 

unit.

Low Level Input (High Impedance)

This unit is provided with gold-plated RCA Output jacks.

Using RCA-RCA type patch cords, connect these Outputs

to the RCA Inputs for your anyther amplifier.

Low Level Output (High Impedance)

Protection LED Indicator

The protection circuitry in the amp will disable it if it 

senses an input overload, speaker short circuit, or 

thermal overload conditions. Should this occur, the 

PROTECT LED will be illuminated. At that time, it is 

important that you check to determine what has caused 

the protection circuitry to become activated. 

If the amp shut off because of a thermal overload, 

allow it to cool down before attempting to restart.

If the shutdown occured because of an input overload, 

or speaker short circuit, be sure to correct these 

conditions before attempting to restart the amp.

To reset the amp, turn the REMOTE power off and on 

again.

This amplifier come complete with a compact remote

GAIN CONTROLLER which can be conveniently mounted

on or under the dashboard of your car.

Allows you to change the phase of your subwoofer

from 0 degree to 180 degrees to help compensate from

timing difference between drivers.

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10

9

8

7

6

5

4

3

2

1

12 Protection LED Indicator

The protection circuitry in the amp will disable it 

if it senses an input overload, speaker short circuit, 

or thermal overload conditions. Should this occur, 

the PROTECT LED will be illuminated. At that time, 

it is important that you check to determine what 

has caused the protection circuitry to become 

activated. 

If the amp shut off because of a thermal overload, 

allow it to cool down before attempting to restart.

If the shutdown occured because of an input 

overload, or speaker short circuit, be sure to 

correct these conditions before attempting to 

restart the amp.

To reset the amp, turn the REMOTE power off and 

on again.

Power LED Indicator

This LED is illuminated when the REMOTE ON 

system is turned on.

This unit is provided with gold-plated RCA input 

jacks. Using RCA-RCA type patch cords, 

connect these inputs to the RCA outputs from 

your head unit.

Low Level Input (High Impedance)

High Level Input (Low Impedance)

Use these if your car stereo does not have

RCA output jacks: connect the speaker output 

from the head unit to these inputs

Permits you to adjust the crossover frequency 

from 80 Hz to 2.5 kHz to suit the tweeters

High Pass Control

Permits you to adjust the crossover frequency 

from 35 Hz to 400 Hz to suit the subwoofers

Low Pass Control

Allows you to increase the bass signal level sent 

to the speakers

Bass Boost Control

In a full range system, set this to FULL. If the amp 

is being used to power a crossover system, set to 

either HPF or LPF as needed.

Crossover Mode Switch

Input Level Control

Use this control to match the output of the head 

unit to the amplifier. If distortion is present, reduce 

the setting of this control.

Power Supply Terminals

Protects the amplifier as well as the automobile 

electrical system from short circuit conditions.

Fuse

These terminals are 14K Gold plated for high 

conductivity and minimum impedance loss. The 

terminals face upwards for easy wiring in tight 

situations.

Speaker Terminals

Remote Bass Boost

Plug in the Remote Bass Boost Control wire in here.

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LA

-688/1088

Features and Controls

Summary of Contents for American LA-1088

Page 1: ...1204 IMPORTANT Pack carefully in original carton if possible We are not responsible for damage incurred in returning items for repair A letter stating your exact street address daytime phone number and the problem you are experiencing should be included You must also enclose a copy of the original receipt as proof of date of purchase FOR YOUR PROTECTION Completely and immediately mail the Product ...

Page 2: ...ative system has been designed utilizing a 12 V DC Negative Ground power supply The LEGACY AMERICAN Series amps incorporate two to eight MOSFETS in the different models This design produces enough available voltage to supply the main amplifier sections and still have a huge amount of reserve voltage for peak high demand situations The Legacy line has been designed to ensure adequate headroom for e...

Page 3: ...he shutdown occured because of an input overload or speaker short circuit be sure to correct these conditions before attempting to restart the amp To reset the amp turn the REMOTE power off and on again Power LED Indicator This LED is illuminated when the REMOTE ON system is turned on 1 1 This unit is provided with gold plated RCA input jacks Using RCA RCA type patch cords connect these inputs to ...

Page 4: ...N CONTROLLER which can be conveniently mounted on or under the dashboard of your car Allows you to change the phase of your subwoofer from 0 degree to 180 degrees to help compensate from timing difference between drivers 1 1 10 9 8 7 6 5 4 3 2 1 12 Protection LED Indicator The protection circuitry in the amp will disable it if it senses an input overload speaker short circuit or thermal overload c...

Page 5: ...lly in an accident Do not mount this amplifier so that the wire connections are unprotected or in a pinched condition or likely to be damaged by nearby objects Be sure to select a location inside your vehicle which has adequate ventilation Before making or breaking power connections in your system disconnect the vehicle battery Confirm that your head unit or other equipment is turned off while con...

Page 6: ...rom 2 CH Audio Source Low Level 4 CH Stereo Input from 4 CH Audio Source inputs Input Connections Bridged Input Connection L A 6 8 8 LA 1088 4CH AMPS 2CH AMPS L A 4 8 8 L A 5 8 8 L A 7 8 8 L A 9 8 8 LA 1488 LA 1888 LA 2088 LA 2288 4CH AMPS L A 6 8 8 LA 1088 ...

Page 7: ... floating ground connection High Level 4 CH Stereo Input from 4CH Audio Source common ground connection 2CH AMPS L A 4 8 8 L A 5 8 8 L A 7 8 8 L A 9 8 8 LA 1488 LA 1888 LA 2088 LA 2288 4CH AMPS L A 6 8 8 LA 1088 L A 6 8 8 LA 1088 4CH AMPS Speakers Speaker Connections inputs Input Connections ...

Page 8: ...tion 2 CH Mono Bridged Output MONO CHANNEL AMPS LA 2488D Bridged Mono Output 2 CH Stereo plus Mono Bridged Subwoofer Output Speaker Output Connection 2CH AMPS L A 4 8 8 L A 5 8 8 L A 7 8 8 L A 9 8 8 LA 1488 LA 1888 LA 2088 LA 2288 4CH AMPS L A 6 8 8 LA 1088 Speakers Speaker Connections ...

Page 9: ...el is correct Check for speaker shorts Check that there is good airflow around the amplifier In some applications an external cooling fan may be required Distorted sound Check that the Level control s is set to match the signal level of the head unit Check that all crossover frequencies are properly set Check for shorts on the speaker leads STOP YES NO 2 c hannel Amplifier Operating in Stereo 4 oh...

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