Question about Legacy Audio LA1020 Car Audio Amplifier

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I need a manual for a legacy series 2 la1020 1000 watt amp

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Posted on Jan 02, 2017

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SOURCE: Amp not working at all...need schematics

source for what? schem? is it powering up or no sound?

Posted on Aug 08, 2007

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SOURCE: what size fuse do i need for amp

start with a 50, may need to increase it if you are not using a large capacitor.
600 watts = 12x
x= 600 watts / 12 volts
x = 50 amps

Posted on Dec 13, 2007

  • 631 Answers

SOURCE: Legacy LA690 1000 watt amp

support@legacycaraudio.com

Posted on Aug 16, 2008

  • 77 Answers

SOURCE: 600w legacy amp

9 times out of 10 if your amplifire is in protect mode and evrything externaly, like speakers, fuse, voltage, etc. checks out fine then
either you have shorted out output transistors or power mosfet transistors. Basicly that just about what happens with car amps.
It's easy enough to fix IF, IF you know what your doing. First you
need to check the output transistors with a digital volt meter on diode check, If they check out then check your power supply mosfet transistors. I can almost guarantee this is your problem. Very common. I buy non working amps all the time and repair them. Listen to pbabin also he has helped me out. Good luck

Posted on Feb 12, 2009

  • 1 Answer

SOURCE: i have an american legacy series 2 1000watt apm

If the fuses were the problem then you would be replacing them all the time. Fuses are only good once - and are only in place to protect the circuitry from damaging overcurrent situations.

More likey, the problem is a thermal protection resulting from over-driving the amplifier. What impedance are the speakers you are running? Does the amplifier support that impedance? Typically, car audio runs 4-8 ohm impedance. Many amps have a switch to place the unit in the proper impedance mode.

Check your wiring. Do you have it wired correctly?

Posted on Apr 03, 2009

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You usually don't need a capacitor because your car can keep up with the power requirements, especially since your system isnt too big (no offense). But if you wanted to get one, i would only get a 1/2 or 1 farad cap.

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All amps aren't created equal. More exspense amps put out "cleaner" power. You need to know what the RMS power rating is for the amp at 8 ohms and 4 ohms. Also, is the speaker an 8 or 4 ohm speaker? How you wire a speaker or speakers (series or paralell) can change the ohms (resistence) which will change the power put out of the amp. Also, I'm assuming you are setting it up in mono?

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I have an american legacy series 2 1000watt apm


Check and see what size fuses it uses. Your watt power means nothing without good fuses. My suggestion would be to go buy 40a fuses and replace the ones you already have.

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What size fuse do i need for amp


start with a 50, may need to increase it if you are not using a large capacitor.
600 watts = 12x
x= 600 watts / 12 volts
x = 50 amps

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