Quickywd01

iTrader: (16)

Last night my subwoofer just stopped working. Whats weird is that when I turn off the radio and turn it back on (no matter how slow or fast) the sub will work for like 10 seconds and then "turn off". I opened my trunk and the blue light on my alpine mrp-m450 was on. I just tried to mess with it; I checked the power cable at both ends, ground, sub to amp and it was all good. Anyone have any idea what's happening? The sub is a pioneer ts-w30m so the amp should have enough power for it. Any help is appreciated.

MissingNAxion

i dont think you ARE getting enough power or also maybe it is a short. check the line again for any openings as well.

nismos14

iTrader: (56)

Why did you make the same exact thraed with a different title?

Quickywd01

iTrader: (16)

What do you mean by not getting enough power? The sub is rated at 150w rms if I remember correctly and I the amp can push 220w at 4ohms, which the sub is. What's weird is that it works when I first turn on the radio for a few seconds and then stops.

internetautomar

iTrader: (30)

if the amp is overheating or not getting enough power (voltage / amperage) it will shut itself off to protect itself.

Quickywd01

iTrader: (16)

It worked fine for about three weeks. The amp has plenty of breathing room in the trunk. That's why I'm stumped. I really don't know what to do. lol

spark plugs.

iTrader: (3)

disconnect the sub from the amp and turn on the system and give it some volume. if the amp still clips, it's not the sub.

Quickywd01

iTrader: (16)

If I disconnect the sub from the amp how will I know if it is working or not? More details: I checked all the connections yesterday including the headunit. Everything looks good. The sub works until I turn the volume above 25 or so. If I leave it at 25 it plays. I have played it before at the highest volume level which is 62 and it didn't clip. I'm a newb at this but I do know my sub is rated at 150w rms. My amp is rated at 220w. I had the gain turned about 65%.

spark plugs.

iTrader: (3)

methinks your amp is shot.

Quickywd01

iTrader: (16)

Dang. What the heck would have caused this to happen. This stuff is like 3 weeks old.

Quickywd01

iTrader: (16)

Is there anything in my setup that would cause the amp to do this? I was thinking about replacing it with the same one.

Quickywd01

iTrader: (16)

I have infinity reference 9623i rear speakers http://www.infinitysystems.com/car/p...=US&Region=USA and rockford fosgate p163 front speakers http://www.rockfordfosgate.com/produ...n_US&p_status= a Pioneer ts-w30m sub http://www.pioneerelectronics.com/pn...677103,00.html hooked to an alpine mrp-450 http://www.alpine-usa.com/US-en/prod...model=MRP-M450 and a pionner headunit http://www.pioneerelectronics.com/pn...744290,00.html Is the amp good for this sub?

Quickywd01

iTrader: (16)

I connected my friends sony 10" sub to my amp and it works fine. I connected my sub to his amp and it didn't really do anything. I removed the sub from my box and the sub seemed like it smelled a little funny. I think the sub is the problem.

nismos14

iTrader: (56)

Prolly sent a clipped signal to it for too long.

jrpaytonAlpha06

Sounds like your voice coils are shot. If you have a warranty, see if you can send it in for repair or replacement.

Quickywd01

iTrader: (16)

Even though it's only been used for a few weeks and it was new it was a few years old. I searched a little bit and read about wires coming loose in the speaker. I'm going to go hold the cone with my hand while cranking up the volume and see if I can get it higher than it cuts out at.