What could the problem be? Still. Experts only please.

[jklfd 10+ year member]

OK, im sure some of you are familar with the prolem i have, for those that dont, here goes.

My subs keep cutting in and out when i first got my system installed. At first it was just cutting out for 5 secs and it would hit again, but after a while it slowly got worse. I got to the point where my subs would play, then it cuts out completely until i turn my car off for about 30mins and when i turn back on my car the subs would work.

Since i got my 500/1 on ebay, JL wont warranty my amp so I found a authorized JL dealer nice enough to send in my 500/1 to get a new circuit board.

After i got my new amp back, i thought problem solved.

The new amp worked fine for about 2 weeks until recently i notice my subs cut out for 5 secs and comes back and it happens constantly.

I took it back to the shop and they did all sorts of testings. They checked if all the wiring was plugged in right etc. They even tested a 10w7 powered by the 500/1 and it didnt cut out once. So they wired back my subs and it never cut out, the only thing they changed was new speaker wires so i thought ok cool problem solved again. Until later on tonight when my subs start cutting in and out again.

I have no idea where the problem could be, could it be the wiring? or is my altenator causing spikes? or could it be the amp again?

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[phyphoestilic 5,000+ posts]

amp cliping? Have u done the gain setting tutorial? Or the Big 3?

 

[jklfd 10+ year member]

gains are set right, no clipping.

It weird because i had it running for 2 weeks no problem until recently.

 

[dleccord 5,000+ posts]

how about rewiring your electrical system. redo your power wire. redo your ground. redo your remote. problem solved. yes there is an easier way of fixing it but i wouldnt go through all that trouble. i didnt bother trying to find what went wrong. my amp was still seeing 12+ volts prior to the rewiring but still would not turn on so i said **** it and rewired the whole car correctly.

 

[phyphoestilic 5,000+ posts]

Big 3 done? Plus like dleccord suggested it wouldn't be a bad idea rewiring the whole system with a bigger gauge cables. Since u said when they switched the speaker cables it helped alot. What size power/ground cables u using to hook up the JL 500/1 ? Cuse I know the JL amps draw alot of current for no reason.

 

[dleccord 5,000+ posts]

yeah they do draw a lot of power. no matter where the gains were set, my amp[500/1] still did not turn on in my case. if you are in no hurry then play around a little bit more. if anything i would suggest you redo your ground. possibly relocate and sand it to bare metal.

 

[ngsm13 5,000+ posts]

Have you ever plotted your impedance?

nG

 

[jklfd 10+ year member]

If it was my grounds, wouldnt this problem occur when i first hooked up my amp? Why would it take 2 weeks to affect my subs cutting in/out. Anyway i have 4awg power and ground wiring.

 

[jklfd 10+ year member]

Have you ever plotted your impedance?
nG

Impedance is fine, they are 4ohm subs wired in parallel.

Problem still occured when wired in series.

 

[ngsm13 5,000+ posts]

JL sucks?

That's the only thing left...

nG

 

[dleccord 5,000+ posts]

If it was my grounds, wouldnt this problem occur when i first hooked up my amp? Why would it take 2 weeks to affect my subs cutting in/out. Anyway i have 4awg power and ground wiring.

of course not. i had the same problem like you after i had the amp installed for about a week.

 

[jklfd 10+ year member]

Im seriously thinking its the wiring thats causing this problem.

What are the chances even after a brand new curcuit board is put in that the problem occurs again.

Or is my altanator causing spikes?

 

[jklfd 10+ year member]

of course not. i had the same problem like you after i had the amp installed for about a week.

Did you solve the problem?

 

[dleccord 5,000+ posts]

http://www.caraudio.com/forum/showthread.php?t=142999&page=3&highlight=dianose

its not your circuit board.

 

[dleccord 5,000+ posts]

Did you solve the problem?

yes