This is my current system configuration:
2 12" Kicker L7 Dual voice coil
1 1500bd Rockford Fosgate Amp
2 1 Farad Caps

Everytime it turn it up the volume on the HU, the amp cuts out. The power indicator light on the amp stays on, but no sound comes out of the subs. If I leave the volume at a low setting or medium setting the amp stays on. What could this be caused by? I have checked the Ohm's load on the speakers and it matches with the amp. Could it be problem with power delivery? Or a ground?

Thanks

 

I had this same problem cause by faulty RCA's

 

What is the impedance level you are getting from the speakers? How are they wired and which are they? What can your amp handle? A little more info and Im sure we can help.

--Don

 

How are those kickers wired, and what's the impedence? You could be overheating the amp if you wired the subs wrong; say for an impedence of 1 ohm. I don't think RF amps are 1 ohm stable.

 

My buddy had that problem and he needed to get a high output alternator. And just like everybody else, check the impediance the amp is seeing also

 

The kicker subs are wired in a 2 ohm configuration, and is putting a 2 ohm load on the amplifier. The amp is designed to push it's maximum power at two ohms. Thanks for the help.

Amp specs: http://www.rockfordfosgate.com/ez2/M...owerAmplifiers

S12L7 Sub Specs:
http://www.kicker.com/ShowPage.cfm?f...enu=SUBWOOFERS

 

So the solo you have is Dual Voice coil 4ohms?

 

Dual 2 ohm voice coils.

 

So you either wired it with the voice coils in parallel and the speakers in series or the voice coils in series and the speakers in parallel; correct?

What else do you have in your system? It is possible that you are drawing too much current and will need an alternator upgrade. According to the documentation that amp typically draws 90 amps.

 

Yeah the speakers are wired like this:


We are running another amp for the mids and highs.

We hooked up a Crossfire BMF 1000d to the L7 in a 2ohm configuration, and the amp picked up the subwoffers with no problems. We turned up the system volume up high, and the Crossfire amp sounded great.

 

Sounds like you are just pulling too many amps. That Crossfire is a much smaller amp than the RF; so if the Crossfire was fine, than the RF is just too big. Either upgrade your alternator or buy a smaller amp, like the Crossfire.

 

I don't think hes pulling too much amps. I've pulled way more than he is on my car with no problem. The amp may be defective. Try this, Wire 1 sub into the amp one voice coil into each channel of the amp. this way the amp sees a 2 ohm load on each side. Then turn the sucker up. If your amp is still cutting out, then your amp is not 2ohm stable. If it was supposed to be, then the amp is faulty. If it does not cut out, then you had your speakers wired wrong.

 

Whoah, bad idea. You are not supposed to wire the voice coils to different channels, you could ruin the sub. JLAudio's explaination

 

If the amp is running mono you will not have any problem. with the scenario u poste. but even if he just ran the main coil. on one channel it would run the same test. but i think i just answered his and my own question which is the problem is that most amps run 2ohm stable in stereo but not 2ohm mono I wonder if he has the amp running 2 ohm mono

 

heh i had the same problem and it ended up being the fuse was too small :/

 

I just got off the phone with RF tech support, and they have determined that I have a bad amp.

 

Hey Corey, what you and Kojiro are both missing is that this amp is a mono amp, so: you cannot hook up to "seperate" channels


-_Don

 

But if it was a multi-channel amp but with a mono signal, I still wouldn't do it; a mono signal going through different amps can still have slightly varying outputs.

 

Duh