Problem with the system

[KMoney28]

So I was driving while playing my sytem(not pounding it too hard) and after about 10 minutes, the bass cut completely out. I checked the amp and it still turns on and the vocals still play, but with the subs on there is no bass. I have 3 Kicker S12L7's and an Autotek MX-3000.1 amp. Anyone have any idea what this could be, blown subs, blown amp, loose wires, etc?

Thanks in advance.....

[Navy I.C.]

It's hard to tell w/out troubleshooting and elimination...

did it ever cut back on? sometimes undervoltage protection will kill the output.

and then you got the usual suspects; open, shorts, grounds, and fuses.

and then there's the rca's and the HU itself. I once had a problem with my HU's rca's outputs puttin' out way too much voltage, but it was cool 'cause everything was under warranty.

[racer_in_black]

I had this problem, it was something with the amp. I didn't fix it until it fried my alternator. Nice huh?

[shconer]

Check all your fuses and wires for lose connections or partialy metled wires or somthing like that expetially if it was a hot day. Maybe you over heated it, although it should be protected you never know. Check all the voltages. Its not likely your subs are blown, they would make some noises. Make shure the head unit settings havent changed.

[TFFantasy44]

If you can, take the cover off of your amp and make sure its not blown. Also, what do you mean "the vocals still play?" Do you have other speakers hooked up to your amp and they play, but the subs don't, or that when you switch on the lpf it doesn't play, but works fine otherwise?

[KMoney28]

All the settings did change but that's because I just put in a yellowtop battery. As for the vocals, they have a separate amp than the subs. The amp to the subs also turns on, but produces no bass. I blew an amp previously and when it happened, my subs would make a popping sound every 5 seconds or so. My subs don't do that now so I'm hoping I can rule out the possibility of blowing another amp. Also the voltage seemed fine. I hope its just a loose wire(don't think it's a blown fuse cuz i bought an extra big one) but I'm not totally sure. I'm gonna have a friend look at it Monday hopefully.

P.S. It was evening time and the weather was nice-to a bit chilly.

[shconer]

I had a similar problem with my subs thumping. I had to turn down my amp a little bit to make it stop. I think it might have to do with my rca imput from my Kenwood head unit.

[TFFantasy44]

Don't rule out the amp being blown. I blew mine, and it made no sounds ever, the amp turned on and everything but went into protection instantly. Unless you have a short or didn't hook the power wire up correctly when installing the new battery, my bet is that the amp is blown.

[KMoney28]

But why would my amp blow? I had it wired at 2 ohms (prolly 2.66 or something cuz i have 3 subs) I wasn't maxing the amp I don't believe. What else would cause the amp to blow?

[sr20de4evr]

what voice coil model are those subs and how do you have them wired?

[Navy I.C.]

are you sure there was no power avail. on your steady hot, because if you short it to ground while the amp is grounded, 9 times out of 10 that's pretty much a wrap for your amp...

[KMoney28]

I have dual 4 ohm voice coils. I believe its wired around 2 ohms in parallel but don't quote me on that. The amp turns on and goes directly to safe mode.

[sr20de4evr]

wait, you have 3 dual 4ohm subs and everything is in parallel? So all 6 + are connected to the + on the amp and all 6 - are connected to the - on the amp?

If so you have it wired at .67 ohm

[KMoney28]

Then maybe it's wired in series, I'm not sure, but its at a 2.67 ohm load I believe.

[Haibane]

series and parallel probably...