I don't mind saying that I don't know very much about wiring soundsystems but I wouldn't say I'm completely ignorant about them either, not completely...

Anyways, back when I got my truck I didn't have time to try to do it myself so I bought a pioneer amp and jl 10, unfortunately the moron at Tweeter that hooked it up for me hooked it up wrong. I took it back and he didn't know how to fix it. This on top of them messing up my Sirius install, on top of this little punk scratching my dash and console, needless to say I was willing to cut my losses and never deal with tweeter again.

But here is my problem: The bass is not right, when the fade/balance (whichever is the left/right option) is in the center like its supposed to be you can't hear any bass at all, unless its like a commercial or something. But when I fade it to the left or to the right, the bass comes alive like its supposed to. Any ideas? I haven't messed with it at all, but I do know that since its just the one sub, that the amp is bridged.

Also, in an 05 S-Cab, where can I mount my amp (probably 8x10) besides under the middle seat in the back? I've bought a box that fits under the middle and driver side seat in the cab...

Thanks for any help!!

 

anyone?

 

I don't know about your bass problem but you can mount the amp behind the rear seat.

 

It does sound like it is not hooked up correctly in bridged mode. The bass is better if you pan left and right? What kind of head unit are you using? What is the model of the amp?

 

Yeah you can barely tell there's a sub there unless you fade it left or right, when I do that it sounds great, but obviously the rest of the speakers don't... well half of them do...

Using the stock head unit (not audiophile) and the amp is Alpine MRP-T220

 

You need to do some checking and see how they hooked it up. Did they use the amp's speaker level inputs or did they use a line out convertor? Do all 4 door speakers work? It is most likely that they just hooked it up wrong.

 

I would check a few things first:

FADE should move the sound from the front to the rear and vice-versa.

BALANCE should move the sound from right to left and vice-versa.

Check to be sure that those are working first. If they are, continue on:

Fade the system to the front speakers. Do you have better bass ?

Yes - The sub input is wired to the front channel(s).

No - Adjust the balance to left or right. Do you have better bass ?

Yes - I would guess the input to the amp is wired incorrectly across both of the stereo channels, on the front channel.

No - Fade the stereo to the rear and do the same tests.

When I say it is wired across both the channels, I mean it is connected to both positive feeds or both negative feeds, instead of just being connected across one channel.

Another possibility is that the amp is wired with stereo input but the sub is wired mono and the stereo inputs are cancelling each other out - another wiring problem.

Also, be sure that the phasing of all the door speakers is correct - bass cancellation is a classic symptom of phase problems.

You may need to adjust the gain on the sub amp as well.

Good luck !!