alpine

[jordano]

any ideas? i have 2 alpine amps one of them runs a pair of 8inch subs the other runs a pair of 5 1/4 and tweeters the fist one was only sending a signal to the left sub and the other no signal at all the pilot light is on on both amps. I have bought 2 identical amps to replace these but the faults are still there what should i check now and is it possible to check them out of the system

[stevo]

could the speaker wires have come loose from the speakers?

[jordano]

Allready checked that

[stevo]

all the switches and levels on the amps set right? apart from that im at a loss, hopefully someone else knows better

[Andy_magic]

I would check the power and earth supplies first, then with the channel that works on the one amp swap the RCA's over to the other channel.

Then try this working RCA on the second amp.

What may have happened is the earth cable has come loose and the amps have been grounding through the RCA's - NOT GOOD.

What model are the AMP's I used to have 3 MRVT-505's in a Fiesta (I know, I've seen the light now) and if they shorted out they would go into protect mode.

[amit325i]

Protect mode should in theory cut all the speakers out.

1st check cable, swap a new /or know working cable (RCA)

if solves = new cable!

if thats the same, try swapping the preouts with know working ones

if solves = defective preout

if the sub is not working still, try a different know working amp

if solves = new amp

if problem persists, check wiring for continuity, check connections tight

if solves = rewire possible or tigher up connectors

if still not working, swap with working sub, if works

= new sub,

Bit of a mission but you got to eliminate everything logically

[jordano]

Thanks for everyones input on this will get to it this morning will lrt you know how it goes

[jordano]

Well it took me most of the day tracing everything back found the problem with the subs they where wired in series and 2 of them had packed in although i cant see anything wrong with them just no sound the other fault seems to be on the crossover it looks like 2 channel have gone down iwonder if its possible to have it repaired cause it runs the whole system any ideas

[amit325i]

You won't be able to see anything wrong with the subs mate, its internal voice coils which can become damaged defective etc.

I would not bother repairing amps, not economical, better of buying new and having peace of mind!

[Andy_magic]

If you dont repair the amps I'll have em.

[jordano]

Its not the amps the problem is with the active stand alone crossover it feeds all 7 amps it looks like the output to 2 amps is broken

[Andy_magic]

Sorry mate, I read the above post.