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Legacy Car Audio LA-478 manual

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Table of contents for the manual

  • Page 1

    LA-478 LA-578 LA-678 LA-778 LA-878 LA-978 LA-1478 LA-1878 LA-2078 LA-2278 LA-2478 W ARRANTY 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 date of original purchase. Our obl[...]

  • Page 2

    LA- 778 2CH amplifier 2 X 75W 2 X 125W 2 X 500W 1 X 1000W 2-4 OHMS 4-8 OHMS 20 A 12.2 X 2 X 12 ( 309 X 53 X 305) 7.6(3.46) LA- 578 2CH amplifier 2 X 50W 2 X 75W 2 X 400W 1 X 800W 2-4 OHMS 4-8 OHMS 15 A 12.2 X 2 X 9.25 ( 309 X 53 X 235) 5.9(2.67) specs Features and Specifications Congratulations • Soft turn on/off circuit • V ariable gain contro[...]

  • Page 3

    3 LA- 978 2CH amplifier 2 X 100W 2 X 150W 2 X 600W 1 X 1200W 2-4 OHMS 4-8 OHMS 30 A 12.2 X 2 X 13.5 ( 309 X 53 X 343) 8.2(3.73) LA- 1478 2CH amplifier 2 X 125W 2 X 200W 2 X 800W 1 X 1600W 2-4 OHMS 4-8 OHMS 30 A 12.2 X 2 X 15 ( 309 X 53 X 381) 8.8 (4.0) LA- 1878 2CH amplifier 2 X 150W 2 X 225W 2 X 1000W 1 X 2000W 2-4 OHMS 4-8 OHMS 40 A 12.2 X 2 X 17[...]

  • Page 4

    5 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 . LA -2478 Features and Contr ols 11 10 9 8 7 6 5 4 3 2 1 12 Power LED Indicator This LED is illuminated when the REMOTE ON system is turned on. Crossover Low Pass Filter Adjustabl[...]

  • Page 5

    to remote turn-on +12V head unit 1 2V battery LA- 478 LA- 578 LA- 778 LA- 978 LA- 1478 LA- 1878 LA- 2078 LA- 2278 2CH AMPS 7 inputs Input Connections Low Level Stereo Input Connection L/R audio outputs head unit High Level Stereo Input Connection PLEASE NOTE! If using high level inputs, do not use the low level RCA inputs at the same time! wiring h[...]

  • Page 6

    9 inputs Input Connections Low Level 4 CH Stereo Input from 2 CH Audio Sour ce Low Level 4 CH Stereo Input from 4 CH Audio Sour ce Left Output Right Output L + R Front Outputs L + R Rear Outputs inputs Input Connections Bridged Input Connection 4 CH Bridged Input from 2 CH Audio Sour ce CH1+2 = Left Channel CH3+4 = Right Channel Left Output Right O[...]

  • Page 7

    11 Basic Stereo Output Basic 4CH Output FRONT speakers REAR speakers L R R L LEFT speaker RIGHT speaker High Level 4 CH Stereo Input from 4CH Audio Sour ce floating ground connection wiring harness L R REAR FRONT L R orange black black orange orange black black orange head unit High Level 4 CH Stereo Input from 4CH Audio Sour ce common ground conne[...]

  • Page 8

    13 inputs/Speaker Low Level Stereo Input Connection Input Connections/Speaker Connection 2 CH Mono-Bridged Output speakers L R MINIMUM SPEAKER IMPEDANCE 4 OHMS! MONO CHANNEL AMPS LA- 2478 Bridged Mono Output 2 CH Stereo plus Mono-Bridged Subwoofer Output speakers L Mono Subwoofer MINIMUM SPEAKER IMPEDANCE 4 OHMS! R TO SA TELLITE AMPLIFIER LINE INPU[...]

  • Page 9

    tr oubleshooting T roubleshooting 15 Amplifier will not power up. • Check for good ground connection. • Check that remote DC terminal has at least +12v DC. • Check that there is battery power on the + terminal. • Check all fuses. • Check that Protection LED is not lit. If it is lit, shut off amplifier briefly and then repower it. High his[...]