Sub Amp Stop when cranking up volume

[leb]

Here's my sub setup:

Amp: Kenwood KAC-7250

Subs: Infinity 1032 (10 inch Dual Coil)

I'm running them at 2 omhs

Here's the story. I added this year a new radio (Kenwood KDC-X890) and I was on a sealed (.75ft3 per chamber) setup, everything was fine, no probelm with the setup, then I changed my box to a ported one ( I had to extend one wire that came from the amplifier from 2-3 feet to a 6 feet one to reach the box). I'm using some 10ga wire, one is 2-3 feet long and the other 6 feet. Now that I have this new setup, When I crank up the volume amp stop working, then it restart 1-2 second after.

My setup is on low voltage, but everything was okay before.. i'm running on a 1farad cap for the amp and a JBL 75.4 for vocals. I checked for polarity of the sub and everything is fine

Can 4 feet of 10ga wire really change the impedance of one sub and amp isn't pushing equal now ?

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[trevor87 5,000+ posts]

Check your rca cables coming from your amp see if they are loose.

 

[leb]

Everything is tight

 

[Ne1 10+ year member]

Everything is tight

Ground isssue perhaps? Not a big enough ground, or some other issue...I had that happen once, after upgrading to a circuit breaker, forgot to plug the ground back into the dist block, it worked suprisingly, thru the radio ground (I think it was at any rate) until I had any kind of bass, then it just died, and would pop back on a few seconds later.....

 

[937DYTBOI 5,000+ posts]

step up the size of wiring

 

[gatorgrizz27 10+ year member]

I have the same problem occasionally, when playing loud w/ sub level turned up it will cut out for a sec or 2. If you turn the volume/ sub level down it is fine though. I don't think I need larger wire, as I am running 1/0 AWG and my 500w amp and it is getting 14.1V to it. Should I run a larger power wire to the h/u, as i am running all my speakers off the pre-outs and they are 5V?

 

[squeak9798 5,000+ posts]

My guess would be an improperly set gain or bass boost is kicking the amp into overload/protection.

Where is the gain set? How did you set it? Using any bass boost?