Home Theater Subwoofer sounds distorted

[Arik5405]

I have a POLK PSW10 (I believe that's the right model...) and it now sounds distorted (it kind of makes a warbly sound when it hits). I don't believe the speaker is blown because I took a different sub out of a seprate enclosure and put it this polk box and it had the same distortion. It isn't the receiver either, I tried a known good sub on the receiver and I also hooked the polk up to a 2nd receiver I have. So it's definitely something going on with the unit itself. I'm not sure if it's the amp, the input, or something else? Just wondering if you guys have any ideas?

I have it hooked up using RCAs. Could I hook an audio source to the Speaker Level Input to test to see if its the RCA input causing the issue? Or is that for something else?

 

[jtvang125]

Sounds like it's the built-in amp. How does it sound connected to your 2nd receiver?

 

[Arik5405]

Sounds like it's the built-in amp. How does it sound connected to your 2nd receiver?

That's what I'm thinking too. It sounds the same connected to either receiver.

 

[sdifox]

does it do that with a lower volume?

 

[gorb]

Yeah, what volume levels are you listening at? That sub is not all that capable.

 

[Smoove910]

If you are connecting it to the LFE output of your receiver, it might be a blown/damaged amp. I would contact Polk and explain your situation. They should help troubleshoot, and if it is indeed the amp they should also send you a replacement with instructions how to swap it out with the old one.

Good luck and let us know how it goes. I've heard good things about Polk's customer service.

 

[Howard]

Is it warranteed?

Sounds like either a part of the circuit is damaged, or something is physically loose... Hard to tell without knowing what it sounds like.