Legacy Car Audio LA738, LA638, LA538, LA938, LA2038 User Manual

...

LEGACY SOUND CORP. warrants this unit to be free from defective material or workmanship and will repair or

replace this unit or any part thereof if it proves defective in normal use or service within two (2) years from the

Our obligation under this warranty is limited to repairing or replacing, at our discretion, the defective instrument

or any part thereof when it is returned, transportation prepaid to the Legacy Service Center at the address

below. This warranty will be considered void if the unit has been tampered with, improperly serviced, subjected

to abuse or misuse or if installed in a commercial vehicle. This warranty does not cover accidental damage.

When returning this unit for service, please include $15.00 for return postage and handling. Send your unit to:

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.

Completely and immediately mail the Product Registration Card

so that we may contact you directly in the event a safety

notification is issued in accordance with the 1972 Consumer

Product Safety Act, or for other reasons Legacy may deem

Our technical department will gladly answer any questions you may have about our products. They cannot, however

tell you the status of a repair, or handle other customer

1-800-934-2277

Monday through Thursday, 9AM to 5PM Friday 9AM to 2PM Eastern.

WWW.legacycaraudio.com

TECHNICAL SUPPORT HOTLINE

MANUFACTURER’S LIMITED TWO YEAR

service situations.

FOR YOUR PROTECTION

necessary.

WARRANTY

date of original purchase.

LEGACY SERVICE CENTER

1600 63rd Street

Brooklyn, NY 11204

LA438 LA538 LA638 LA738 LA838 LA938 LA1038 LA1438 LA1838 LA2038

HIGH SPEED

CAR AMPLIFIER

specs

Congratulations

on your purchase of a new

Legacy amps are some of the most advanced car amplification products available. These quality audio products are designed and engineered to afford you years of uncompromised musical service. Legacy has utilized the latest electronic technologies in order to deliver a superb listening experience.

This innovative system has been designed utilizing a 12 V DC Negative Ground power supply. The LEGACY 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 even the most demanding peaks and dynamic ranges found on today’s CD’s and recordings. Used properly, these amplifiers will provide you with years of listening pleasure.

American Legacy amplifier !

USER MANUAL

table of contents

SPECIFICATIONS

LA438/538/738/938/1438/1838/2038 FEATURES & CONTROLS

LA638/838/1038 FEATURES & CONTROLS

ELECTRICAL WIRING, INSTALLATION & SETUP

2 CH STEREO INPUT CONNECTIONS

4 CH STEREO INPUT CONNECTIONS

BRIDGED INPUT CONNECTIONS

BASIC STEREO SPEAKER CONNECTIONS MONO-BRIDGED SPEAKER CONNECTIONS

TROUBLESHOOTING

WARRANTY

American Legacy Amplifier Features

all amps feature:

• LED Light Bar with Hold or Scan

• Soft turn on/off circuit

• Variable gain control

• Remote turn on/off

• Hi/low level inputs

• Power on LED indicator

438

538

Specifications

OUTPUT POWER

RMS @ 4 OHMS RMS @ 2 OHMS MAX OUTPUT BRIDGE MODE

FREQUENCY RESPONSE INPUT IMPEDANCE

LOW LEVEL INPUTS HIGH LEVEL INPUTS

INPUT SENSITIVITY

LOW LEVEL INPUTS HIGH LEVEL INPUTS

POWER SUPPLY VOLTAGE MATCHING SPEAKER IMPEDANCE

STEREO MODE BRIDGED MODE

MAXIMUM CURRENT DRAW DIMENSIONS, W x H x L, inches

(mm)

NET WEIGHT, LBS (KG)

2CH amplifier

2 X 40W 2 X 60W 2 X 300W 1 X 600W

10Hz-30 kHz

10 k-Ohms 100 Ohms

250 mV

2.5V

14.4 VDC/NEG GD (10.5-16V)

2-4 OHMS 4-8 OHMS

15 A 11 X 2.7 X 8.25

(279 X 69 X 209)

5.7 (2.5)

2CH amplifier

2 X 50W 2 X 75W 2 X 400W 1 X 800W

2-4 OHMS 4-8 OHMS

15 A 11 X 2.7 X 9.25

(279 X 69 X 235)

6.2 (2.8)

638

4CH amplifier

4 X 35W 4 X 55W 4 X 250W 2 X 250W+500W

OR 2 X 500W

2-4 OHMS 4-8 OHMS

20 A 11 X 2.7 X 12

(279 X 69 X 305)

8.1 (3.7)

LA438/538/638/738/838/938/1038/1438/1838/2038 also feature

• Fully adjustable electronic crossover network

• Remote control Bass boost ( 0 – +18dB @ 60Hz )

• 2 ohm stereo stable

• Bridgeable into 4 ohms

• MOSFET PWM power supplies

• LED protection indicator

738

838

938

1038

1438

2CH amplifier

2 X 75W 2 X 125W 2 X 500W 1 X 1000W

2-4 OHMS 4-8 OHMS

20 A 11 X 2.7 X 12

(279 X 69 X 305)

7.5 (3.4)

4CH amplifier

4 X 50W 4 X 75W 4 X 400W 2 X 400W+800W

OR 2 X 800W

2-4 OHMS 4-8 OHMS

30 A 11 X 2.7 X 15

(279 X 69 X 381)

9.5 (4.3)

2CH amplifier

2 X 90W 2 X 150W 2 X 600W 1 X 1200W

2-4 OHMS 4-8 OHMS

30 A 11 X 2.7 X 13.5

(279 X 69 X 343)

8.4 (3.8)

Features and Specifications

4CH amplifier

4 X 75W 4 X 115W 4 X 500W 2 X 500W+1000W

2-4 OHMS 4-8 OHMS

40 A 11 X 2.7 X 17

(279 X 69 X 432)

10.6 (4.8)

2 X 1000W

2CH amplifier

2 X 125W 2 X 200W 2 X 800W 1 X 1600W

2-4 OHMS 4-8 OHMS

30 A 11 X 2.7 X 15

(279 X 69 X 381)

9.2 (4.2)

1838

2CH amplifier

2 X 150W 2 X 225W 2 X 1000W 1 X 2000W

2-4 OHMS 4-8 OHMS

40 A 11 X 2.7 X 17

(279 X 69 X 432)

10.6 (4.8)

203

2CH amplifier

2 X 200W 2 X 300W 2 X 1200W 1 X 2400W

2-4 OHMS 4-8 OHMS

50 A 11 X 2.7 X 19

(279 X 69 X 482)

11.4 (5.2)

1 2 3

13 12 11

8 7 6 5410

LA438/538/738/938/1438/1838/2038

Features and Controls

Speaker Terminals1

These terminals are 14K Gold plated for high conductivity and minimum impedance loss. The terminals face upwards for easy wiring in tight situations.

Fuse

Protects the amplifier as well as the automobile electrical system from short circuit conditions.

Power Supply Terminals

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.

Crossover Mode Switch

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.

Bass Boost Control

Allows you to increase the bass signal level sent to the speakers

Low Pass Control

Permits you to adjust the crossover frequency from 35 Hz to 400 Hz to suit the subwoofers

High Pass Control

Permits you to adjust the crossover frequency from 80 Hz to 2.5 kHz to suit the tweeters

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

Low Level Input (High Impedance)

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.

Power LED Indicator

This LED is illuminated when the REMOTE ON system is turned on.

1212

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.

Remote Bass Boost

Plug in the Remote Bass Boost Control wire in here.

LED Light Bar Switch.

When switch set at"SCAN"position,the LEDs scan automatically from left to right over top cover. When switch set at"Hold" position light up all the LED indicator.

(LA438 WITHOUT)

1 2 3

13 4

8765109

LA638/838/1038

Features and Controls

8127 6 5 10 9

Speaker Terminals

These terminals are 14K Gold plated for high conductivity and minimum impedance loss. The terminals face upwards for easy wiring in tight situations.

Fuse

Protects the amplifier as well as the automobile electrical system from short circuit conditions.

Power Supply Terminals

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.

Crossover Mode Switch

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.

Bass Boost Control

Allows you to increase the bass signal level sent to the speakers

Low Pass Control

Permits you to adjust the crossover frequency from 35 Hz to 400 Hz to suit the subwoofers

High Pass Control

Permits you to adjust the crossover frequency from 80 Hz to 2.5 kHz to suit the tweeters

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

Low Level Input (High Impedance)

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.

Power LED Indicator

This LED is illuminated when the REMOTE ON system is turned on.

1212

Protection LED Indicator

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.

Remote Bass Boost

Plug in the Remote Bass Boost Control wire in here.

LED Light Bar Switch.

When switch set at"SCAN"position,the LEDs scan automatically from left to right over top cover. When switch set at"Hold" position light up all the LED indicator.

(LA638 WITHOUT)

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