Legacy Car Audio LA1880, LA480, LA580, LA2080, LA680 User Manual

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Legacy Car Audio LA1880, LA480, LA580, LA2080, LA680 User Manual

HIGH SPEED

CAR AMPLIFIER

LA480 LA1080 LA580 LA1480 LA680 LA1880 LA780 LA2080

Congratulations

on your purchase of a new

Legacy Blue Diamond Series amplifier!

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 Blue Diamond 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.

USER MANUAL table of contents

1SPECIFICATIONS

2LA480/580/780/1480/1880/2080 FEATURES & CONTROLS

3LA680/1080 FEATURES & CONTROLS

4ELECTRICAL WIRING, INSTALLATION & SETUP

52 CH STEREO INPUT CONNECTIONS

64 CH STEREO INPUT CONNECTIONS

8 BRIDGED INPUT CONNECTIONS

9 BASIC STEREO SPEAKER CONNECTIONS

10 MONO-BRIDGED SPEAKER CONNECTIONS

1 1 TROUBLESHOOTING

12 WARRANTY

Legacy Blue Diamond Amplifier Features

all amps feature:

• Polished chrome finish w/plexiglass panel

• Fully adjustable electronic crossover network

• Soft turn on/off circuit

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

• Variable gain control

• 2 ohm stereo stable

• Remote turn on/off

• Bridgeable into 4 ohms

• Hi/low level inputs

• MOSFET PWM power supplies

• Power on LED indicator

• LED protection indicator

Specifications

2CH amplifier

2CH amplifier

4CH amplifier

2CH amplifier

4CH amplifier

2CH amplifier

2CH amplifier

2CH amplifier

 

LA480

LA580

LA680

LA780

LA1080

LA1480

LA1880

LA2080

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTPUT POWER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RMS @ 4 OHMS

2 X 40W

2 X 50W

4 X 35W

2 X 75W

4 X 75W

2 X 125W

2 X 150W

2 X 200W

RMS @ 2 OHMS

2 X 60W

2 X 85W

4 X 55W

2 X 125W

4 X 125W

2 X 200W

2 X 230W

2 X 320W

MAX OUTPUT

2 X 300W

2 X 400W

4 X 250W

2 X 500W

4 X 500W

2 X 800W

2 X 900W

2 X 1200W

BRIDGE MODE

1 X 600W

1 X 800W

2 X 500W

1 X 1000W

2 X 1000W

1 X 1600W

1 X 1800W

1 X 2400W

FREQUENCY RESPONSE

10-30 kHz

 

 

 

 

 

(2 X 250W+1X500W)

 

(2 X 500W+1X1000W)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INPUT IMPEDANCE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW LEVEL INPUTS

10 k-Ohms

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HIGH LEVEL INPUTS

100 Ohms

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INPUT SENSITIVITY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW LEVEL INPUTS

250 mV

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HIGH LEVEL INPUTS

2.5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER SUPPLY VOLTAGE

14.4 VDC/NEG

GD (10.5-16V)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MATCHING SPEAKER IMPEDANCE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STEREO MODE

2-4 OHMS

2-4 OHMS

2-4 OHMS

2-4 OHMS

2-4 OHMS

2-4 OHMS

2-4 OHMS

2-4 OHMS

BRIDGED MODE

4-8 OHMS

4-8 OHMS

4-8 OHMS

4-8 OHMS

4-8 OHMS

4-8 OHMS

4-8 OHMS

4-8 OHMS

MAXIMUM CURRENT DRAW

15 A

15 A

20 A

20 A

40 A

30 A

40 A

50 A

DIMENSIONS, W x H x L, inches

11.5 X 2 X 8.25

11.5 X 2 X 9.25

11.5 X 2 X 12

11.5 X 2 X 12

11.5 X 2 X 15

11.5 X 2 X 15

11.5 X 2 X 17

11.5 X 2 X 19

(mm)

(292 X 51 X 209)

(292 X 51 X 241)

(292 X 51 X 305)

(292 X 51 X 305)

(292 X 51 X 381)

(292 X 51 X 381)

(292 X 51 X 432)

(292 X 51 X 482)

NET WEIGHT, LBS (KG)

5.4 (2.45)

 

 

 

6 (2.72)

 

8.1 (3.66)

7.4 (3.35)

9.5 (4.3)

9.24 (4.2)

10.3 (4.66)

11.44 (5.2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Features andspecsSpecifications

 

3

 

2

 

 

1

 

 

 

 

 

 

BRIDGED

+

 

V

12

GND

R

+

L

+

 

 

 

FUSE

 

 

 

 

 

 

REM

 

 

 

 

 

 

 

 

 

 

 

 

LOW IN

 

REMOTE

 

 

 

 

L

 

 

 

 

 

 

 

BASS BOOST

 

 

 

 

 

 

 

 

BASS

 

 

 

 

HPF

LPF

BOOST

FREQ.

 

LEVEL

 

 

 

 

 

 

R

L

PROTECT POWER

 

 

 

 

R

 

 

 

 

 

 

 

80 2.5k

35 400

0 18db

 

MIN

MAX

 

H 2

H 2

 

HPFLPFFULL

 

HI

IN

 

 

 

 

13 12 11 8 7 6 5 4 10 9

1 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.

2 Fuse

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

3Power Supply Terminals

4Input 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.

5 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.

6 Bass Boost Control

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

7 Low Pass Control

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

8 High Pass Control

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

9 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

10 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.

11 Power LED Indicator

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

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.

13 Remote Bass Boost(LA480 Without)

Plug in the Remote Bass Boost Control wire in here.

LA480/580/780/1480/1880/2080Features and Controls

 

3

2

 

 

1

 

 

 

 

+BRIDGED

+BRIDGED

12V

GND

+CH4

+CH3

+CH2

+CH1

 

 

FUSE

 

 

 

 

 

 

REM

 

 

 

 

 

 

 

 

CH4

 

 

 

BASS

 

 

 

 

BASS

 

 

CH2

 

 

 

 

 

LEVEL

FREQ.

BOOST

LPF

HPF

HPF

LPF

BOOST

FREQ.

LEVEL

 

 

CH4

CH3

 

MIN

MAX

LPFHPF

0 18db 35 400

80 2.5k

80 2.5k 35 400

0 18db

MIN

MAX

 

CH2

CH1

HI

IN

CH3

 

 

HPFLPFFULL

 

CH1

HI

IN

 

 

 

FULL

 

H 2

H 2

H 2

H 2

 

 

 

 

REMOTE

BASS BOOST CH3/4

LOW IN

PROTECT

POWER

LOW IN

9 10 4

5

7

12 13 11

8

7

5

4 10 9

 

6

8

6

 

1 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.

2 Fuse

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

3Power Supply Terminals

4Input 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.

5 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.

6

Bass Boost Control

 

 

Allows you to increase the bass signal level sent to the

 

 

speakers

 

7

Low Pass Control

 

 

Permits you to adjust the crossover frequency from 35

 

 

Hz to 400 Hz to suit the subwoofers

 

8

High Pass Control

 

 

Permits you to adjust the crossover frequency from

3

 

80 Hz to 2.5 kHz to suit the tweeters

 

 

9

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

 

10 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.

11 Power LED Indicator

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

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.

13 Remote Bass Boost

Plug in the Remote Bass Boost Control wire in here.

LA680/1080Features and Controls

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