Any suggestions about my subwoofer?

Aloha,

I'm wondering if anyone might be able to help me with this problem I've encountered. Thank you in advance. Recently my M&K MX-125 sub started not functiong like before. The sub level when turned up only works at 2 certain points, all other spots it makes a whurring sound (like a helicopter) and the cone itself is moving in and out very fast. I hope it's nothing too serious since I didn't purchase it at an "authorized dealer" (pawn shop deal of the century) and have no paperwork for it. Well, thanks for reading my post.

Mahalo again,

Chris (ironbird01)

Wow, sounds like some sort of short in your rig somewhere. When a speaker flutters in and out like that something funny is definately going wrong. Here's some suggestions...

1. Borrow a sub from some one and see if the problem is in your Receiver and not your sub.

2. If it's the receiver ie signal try a different better subwoofer connection perhaps even clean the connectors to ensure a better seat.

3. If your receiver is NOT the problem try the sub on someone elses system if it is the problem take it in to a local shop see if you can get it fixed on the cheap. Try one and two first though..

Hope this helps...

Da Worfster :o

Just as an addition to Worf's solid advice...if your sub accepts the L and R speaker inputs you might be able to narrow it down a bit quicker, rather than having to borrow another subwoofer (assuming the receivers r & l outputs work). Connect the sub via the speaker outputs and see if the problem persists...if it does, it's a safe bet it's not the receiver's LFE output or the subs LFE input.

Thanks for such a quick response! I'll be sure to try both. Mahalo