Sub Or Amp problem???

[calais_cruzin]

Hey All,

Just have a problem with my amp or subs that has just happened in the past 4 days

What happens is volume on 22 is fine but put up to 23 n i loose a heap of bass. My subs used to crank to around vol 27/28 b4 they peaked

Ive checked all my grounds n power, thinkin that it was unable to ground out properly once on this volume.

Put multi-meter on it n she reads perfect, 12.4 off, 14.3 on, and only loose's around 0.2v wen pumping

Ive got a JBL 75.4 520w amp running 2x JBL 12inch 250rms subs bridged.

I have no idea y this problem has started, cept that i did overheat the amp bout 2weeks ago on a long drive.

The problem has only started on fri night as i noticed it sounded distorted at a level it should be smooth.

I turned me gain down a bit thinking it may have worked its way up a bit but still no change.

Im stuffed if i can think of wats goin on.

Any help would be great,Thanks :thumbsup:

Also what sends the signal for vol control from H/U to amp.

 

[calais_cruzin]

Goin to go get a Jaycar capacitor the sarvo, but i doubt it will change anything.

Its just weird that this has happened all of a sudden.

 

[calais_cruzin]

Cap has fixed the problem, dunno how but it has.

Also the dude at jaycar said there caps have a beep that goes off while it charges, it dont beep.

Has anyone else got a response capacitor from jaycar???

Im sure its all wired up right, batt + to + on cap then + from cap to amp, and cap - to chassis, got amp earthed to same spot as cap but on a different wire, amp not earthed thru cap.

 

[05 VZ SS]

Yeah, on got 1 the other week. Guy in jaycar said to stop the beeping, just pull out the speaker and it won't damage your warranty. I got them to do it..But the beeping was real annoying. Now it doesn't beep at all....
Which one did you get? I just got the 1 Farad one...

 

[calais_cruzin]

Yeah i just got the 1farad cap, but mine dont beep like he said it would.

What hole did u put the batt power into, i put mine in the big 2guage hole, then ran power to the amp from the 4gauge next to it.

 

[05 VZ SS]

i put mine in the 4gauge hole...cause the bigger hle was 2 big.....and then doubled up a 8 gauge wire 2 power 2 amps...If thats makes sense...

 

[calais_cruzin]

Yeah that makes sense.

So ur useing the hole on the bak n one on the side.

Wonder if thats the reason it beeps, coz im just using the onse on the sides, n im not getting the beep like he said it would.

Im happy with it, glad i dont have to take out the pretzo thingy to stop the beeping.

 

[05 VZ SS]

thats not the reason it beeps. When I first used it, it was beeping...Really annoying and loud....There's a new version and an old version..I think the new one is the squarish design one, not the big cylindrical one...And the square one beeps...The old one doesn't...

 

[calais_cruzin]

Yeah mine is the square one, I think the model by memory is RU-6752.

But i was pointing more towards using the back hole as the batt + to be a reason y urs beeped n mine didnt.

Jaycar explained what i would need to remove to stop the thing from beeping when it charges but mine hasnt beeped. weird eh

 

[Joe Peeps]

Just curious what made you go get a cap, cause i can think of no reason how it would be fixing the problem you describe......... if someone can, please enlighten me