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 |
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LA480 |
LA580 |
LA680 |
LA780 |
LA1080 |
LA1480 |
LA1880 |
LA2080 |
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OUTPUT POWER |
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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 |
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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 |
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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 |
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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 |
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FREQUENCY RESPONSE |
10-30 kHz |
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(2 X 250W+1X500W) |
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(2 X 500W+1X1000W) |
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INPUT IMPEDANCE |
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LOW LEVEL INPUTS |
10 k-Ohms |
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HIGH LEVEL INPUTS |
100 Ohms |
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INPUT SENSITIVITY |
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LOW LEVEL INPUTS |
250 mV |
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HIGH LEVEL INPUTS |
2.5V |
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POWER SUPPLY VOLTAGE |
14.4 VDC/NEG |
GD (10.5-16V) |
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MATCHING SPEAKER IMPEDANCE |
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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 |
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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 |
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MAXIMUM CURRENT DRAW |
15 A |
15 A |
20 A |
20 A |
40 A |
30 A |
40 A |
50 A |
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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 |
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(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) |
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NET WEIGHT, LBS (KG) |
5.4 (2.45) |
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6 (2.72) |
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8.1 (3.66) |
7.4 (3.35) |
9.5 (4.3) |
9.24 (4.2) |
10.3 (4.66) |
11.44 (5.2) |
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Features andspecsSpecifications
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3 |
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1 |
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– |
BRIDGED |
+ |
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V |
12 |
GND |
– |
R |
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L |
+ |
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FUSE |
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REM |
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LOW IN |
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REMOTE |
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L |
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BASS BOOST |
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BASS |
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HPF |
LPF |
BOOST |
FREQ. |
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LEVEL |
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R |
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PROTECT POWER |
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R |
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80 2.5k |
35 400 |
0 18db |
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MIN |
MAX |
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H 2 |
H 2 |
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HPFLPFFULL |
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HI |
IN |
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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
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3 |
2 |
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1 |
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+BRIDGED |
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+BRIDGED |
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12V |
GND |
+CH4– |
+CH3– |
+CH2– |
+CH1– |
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FUSE |
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REM |
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CH4 |
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BASS |
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BASS |
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CH2 |
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LEVEL |
FREQ. |
BOOST |
LPF |
HPF |
HPF |
LPF |
BOOST |
FREQ. |
LEVEL |
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CH4 |
CH3 |
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MIN |
MAX |
LPFHPF |
0 18db 35 400 |
80 2.5k |
80 2.5k 35 400 |
0 18db |
MIN |
MAX |
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CH2 |
CH1 |
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HI |
IN |
CH3 |
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HPFLPFFULL |
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CH1 |
HI |
IN |
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FULL |
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H 2 |
H 2 |
H 2 |
H 2 |
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REMOTE
BASS BOOST CH3/4
LOW IN |
PROTECT |
POWER |
LOW IN |
9 10 4 |
5 |
7 |
12 13 11 |
8 |
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5 |
4 10 9 |
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8 |
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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 |
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Allows you to increase the bass signal level sent to the |
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speakers |
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Low Pass Control |
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Permits you to adjust the crossover frequency from 35 |
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Hz to 400 Hz to suit the subwoofers |
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High Pass Control |
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Permits you to adjust the crossover frequency from |
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80 Hz to 2.5 kHz to suit the tweeters |
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9 |
High Level Input (Low Impedance) |
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Use these if your car stereo does not have |
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RCA output jacks: connect the speaker output from |
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the head unit to these inputs |
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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