Question about Legacy Audio LA770 Car Audio Amplifier

My legacy red series 2 la770

I have a legacy amp for my subs in my car. it is a la770 500w x 2ch. it just started randomly and what it does is when i turn it on, the protect light comes on VERY dimly and it puts out a very loud rumble constantly till i turn it off? what is the problem and how do i fix it????

2 Answers

Anonymous

You probibly have a bad RCA cable that happend to my on my brand new MTX thunder amp, try that or else move your ground to a dif. spot in the car or add another ground, also make shur your RCA cables are on the opp side of the power because they magnetic power ran through the power cables can distort and some time dammape your subs.

Posted on Sep 04, 2008

Anonymous

Buy a new amp!

Posted on Sep 06, 2007

1 Suggested Answer

6ya staff

2 Answers

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Posted on Jan 02, 2017

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1 Answer

I have 2 solo baric l7 duel 4ohm subs and a legacy la-2499 amp.What is the best way to wire it up?

Unfortunately, the amp is only 2 ohm stable, so the best option is to connect each subs voice coils in parallel (2 ohms) and connect the subs in series (4 ohms).

Oct 06, 2015 | Legacy Car Audio & Video

1 Answer

Protect light is on ,no sound?

Make sure you have a good ground connection. The ground wire should be solidly connected to the vehicle chassis in a paint-free location. If the ground is connected badly, the protect light will come on.

Mar 08, 2011 | Legacy Audio Legacy - Red Series: 2...

1 Answer

I have a boss rt645 2ch 1400 watt amp would this amp properly push a pair of 12 inch mtx terminators.

That all depends on the wattage of the subs. also the independance of the subs. If your amp is 1400 watt, maximum you want is 2 600watt subs. if your subs are higher you will blow your amp eventually as your amp isnt powerful enough to pump out to that level.You should never have your amp fully turned up to max, 80% is perfect and will not make your amp blow. Hense why you want your subs less than the max output of your amp.

Mar 04, 2011 | Boss AUDIO RT-645 2-Channel Riot Series...

1 Answer

Legacy LA770 worked for 2 10" subs but not for 1 12" sub

if the protect light is still on with all speakers disconected then you have overloaded the internal ic and blown it beyound its ability to reset

sorry

Jun 25, 2010 | Legacy Audio LA770 Car Audio Amplifier

1 Answer

How much does this amp run

Well here is the stats

2000watts 2-channel
Output Powers
• 500W (RMS) x 2CH (2 Ohm) 500rms each channel
• 600 (RMS) x 2CH (4 Ohm) 300rms each channel
• 1000W (RMS) x 1CH (4 Ohm)

If your talking about price it runs about...

$100-130

Jan 12, 2010 | Solid Audio Formula Series F2000 2-Channel...

1 Answer

I have a 800w legacy series amp and two pioneer 400w subs and it plays at first but after 20 minutes or so the amp gets hot and goes into protect mode. all wires are hooked up correctly. what is my...

one sub per channel you can not brige this amp in to a 4ohm load because your amp is going to see 2 ohms and that amp is not 1 ohm stabel

Jun 13, 2009 | Legacy 2CH 800W AMP Car Audio Amplifier

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Amp Goes in protect whne bridged cuts out

do u have an crossover

Feb 03, 2009 | Legacy Audio LA770 Car Audio Amplifier

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Problem with LEGACY BLUE DIAMOND AMPLIFIERS LA1080

never attemp to bridge your amps specially this type of amps. this are too very complicated. you may blow your amp if you will attempt it again.

Jan 22, 2008 | Legacy BLUE 4 X 250W CAR AMP Car Audio...

1 Answer

Bridgeing

u use the first live out put and the last out put wich should b a negative whick will make the amp run all its power into the sub

Jan 21, 2008 | Legacy Audio LA770 Car Audio Amplifier

1 Answer

Half my amp works

Im sorry to tell you, that if only one side is working, you most likly have an open driver transistor or input device. If the one side had a shorted output then the whole unit would go into shutdown. The fact that the unit still works is a good sign. The correct way to test an amp is with some equipment most folks do not have, and that means a trip to your local good audio repair facility. They will need to doi a bench check on the amp with load resistors and a tone generator. If the amp preforms good on the bench, then you should start looking for bad speakers and or pinched wiring,loose connections or bad speakers. Let us know what happens? Good Luck

Oct 05, 2006 | Legacy Audio Legacy - Red Series: 2...

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I have 2 solo baric l7 duel 4ohm subs and a legacy la-2499 amp.What is the best way to wire it up?

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My legacy red series 2 la770

2 Answers

Anonymous

Anonymous

1 Suggested Answer

6ya staff

Add Your Answer

Attachments: Added items

Related Questions:

I have 2 solo baric l7 duel 4ohm subs and a legacy la-2499 amp.What is the best way to wire it up?

Protect light is on ,no sound?

I have a boss rt645 2ch 1400 watt amp would this amp properly push a pair of 12 inch mtx terminators.

Legacy LA770 worked for 2 10" subs but not for 1 12" sub

How much does this amp run

I have a 800w legacy series amp and two pioneer 400w subs and it plays at first but after 20 minutes or so the amp gets hot and goes into protect mode. all wires are hooked up correctly. what is my...

Amp Goes in protect whne bridged cuts out

Problem with LEGACY BLUE DIAMOND AMPLIFIERS LA1080

Bridgeing

Half my amp works

Not finding what you are looking for?

LA770 Car Audio Amplifier

I have 2 solo baric l7 duel 4ohm subs and a legacy la-2499 amp.What is the best way to wire it up?

Open Questions:

I just hooked up a jeason VM9311TS and I have no sound everything else works like it's supposed to

Why does the screen on my boss bv9967b keep going black?

Is wiring harness plug in 16 pin same for KD -G335 and KD-G420

Looking for support manual for a Crossfire CT2120 Power Amplifier or the fuse rating for it. Not the battery cable line fuse but the one that actually goes into the amp itself.

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