Legacy Car Audio la970, LA370, LA470, LA2070, LA570 User Manual

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MANUFACTURER’S LIMITED TWO YEAR

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

W ARRANTY

date of original purchase.

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.

FOR YOUR PROTECTION

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

TECHNICAL SUPPORT HOTLINE

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

service situations.

1-800-934-2277

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

necessary.

LEGACY SERVICE CENTER

1600 63rd Street

Brooklyn, NY 11204

LA370 LA470 LA570 LA670 LA770 LA870 LA970 LA1470 LA1870 LA2070

HIGH SPEED

CAR AMPLIFIER

www.legacycaraudio.com

Congratulations

on your purchase of a new

Legacy Red Series 2 amplifier!

Legacy Red Series 2 Amplifier Features

all amps feature:

• Polished chrome finish w/plexiglass panel

• Soft turn on/off circuit

• Variable gain control

• Remote turn on/off

• Hi/low level inputs

• Power on LED indicator

• 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

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 Red SERIES 2 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.

USER MANUAL

table of contents

SPECIFICATIONS

LA370/LA470/570/770/970/1470/1870/2070

FEATURES & CONTROLS LA670/870 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

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)

LA370

2CH amplifier

2 X 40W 2 X 60W 2 X 250W 1 X 500W

10-30 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

10.4 X 2.6 X 10.5

(264 X 66 X 268)

LA470

2CH amplifier

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

2-4 OHMS 4-8 OHMS

15 A

10.4 X 2.6 X 12

(264 X 66 X 304)

LA570

2CH amplifier

2 X 50W 2 X 85W 2 X 400W 1 X 800W

2-4 OHMS 4-8 OHMS

15 A

10.4 X 2.6 X 12.7

(264 X 66 X 322)

LA670

4CH amplifier

4 X 35W 4 X 55W 4 X 250W 2 X 500W (2 X 250W+1X500W)

2-4 OHMS 4-8 OHMS

20 A

10.4 X 2.6 X 14

(264 X 66 X 358)

LA770

2CH amplifier

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

2-4 OHMS 4-8 OHMS

20 A

10.4 X 2.6 X 14

(264 X 66 X 358)

LA870

4CH amplifier

4 X 50W 4 X 85W 4 X 400W 2 X 800W (2 X 400W+1X800W)

2-4 OHMS 4-8 OHMS

30 A

10.4 X 2.6 X 15.5

(264 X 66 X 394)

LA970

2CH amplifier

2 X 100W 2 X 150W 2 X 600W 1 X 1200W

2-4 OHMS 4-8 OHMS

30 A

10.4 X 2.6 X 15.5

(264 X 66 X 394)

LA1470

2CH amplifier

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

2-4 OHMS 4-8 OHMS

30 A

10.4 X 2.6 X 16.2

(264 X 66 X 412)

LA1870

2CH amplifier

2 X 150W 2 X 230W 2 X 900W 1 X 1800W

2-4 OHMS 4-8 OHMS

40 A

10.4 X 2.6 X 17

(264 X 66 X 430)

LA2070

2CH amplifier

2 X 230W 2 X 350W 2 X 1200W 1 X 2400W

2-4 OHMS 4-8 OHMS

40 A

10.4 X 2.6 X 19

(264 X 66 X 484)

NET WEIGHT, LBS (KG)

7.3 (3.3)

8.4 (3.7)

8.8 (4)

9.7 (4.4)

9.6 (4.3)

Features and Specifications

10.6 (4.8)

10.4 (4.7)

11 (5)

11.5 (5.2)

specs

13 (5.9)

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

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

LA970LA970

600W x 2CH

1212

54 7 8

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.

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.

LA870LA870

400W x 4CH

54 7 8

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.

LA370/470/570/770/970/1470/1870/2070

Features and Controls

Remote Bass Boost (LA370 without)

Plug in the Remote Bass Boost Control wire in here.

LA670/870

Features and Controls

Remote Bass Boost

Plug in the Remote Bass Boost Control wire in here.

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