Apline MRP-M350 question.... or Issue lol
 

So I built the subwoofer box that is all over this site to replace the existing weak subs.... Used the Pioneer Sub TS-SW251 and the Alpine Amp MRP-M350

I have the amp all stuffed in the left side next to the exsisting amp etc. everything was working fine for 2 days, then one night about 1 am I was driving home and the sub stopped playing music....

This morning I look at all the fuses, connections, power light on amp, subwoofer connections etc. All check out ok

When I start up the car or give the amp power initially, the sub makes a pop noise (likes its about to hit for a song/note etc) then thats it, nothing else....

ANY IDEAS.... Is the amp dead or do you think it's the sub....

On the amp, I have the gain at half, been at half the whole time.

Thanks

Michael

Michael, do you have sound from the rest of the speakers? Is it only the sub not working?

If yes, I suggest u check the connections one by one as follows:
- Cables going to the sub
- The tapping on the OEM amp plug (u should have four cables/connections to check)
- Speaker level input or RCA input going to the Alpine
- The remote power cable going to the Alpine
- The main power cable going to the Alpine
- and finally the ground.

Bad grounding can make no sound even if the amp is showing the ON blue light.

Good luck!

Ok, took it down to a local stereo shop and he hooked up an ohm meter and he says my Sub is only registering .5 ohms.... when it's a 4 ohm sub right? He is thinking the sub is blown. He thinks the alpine amp see's it's only .5 ohms and shutdowns.

Your thoughts?

Then u should connect another sub and check if it works or not ... this is the simple way to know what's wrong