The thing is, if it's a grounding issue, you'll likely find that any other replacement sub will have problems, too.

Agree Mark. Removing the ground screw and or using a cheater plug will tell you if you have a ground loop or not. It is common when adding a 3 prong subwoofer.

k.. i'll look into that.

now what about zimm's other suggestion about the sub out on the receiver? Can anyone tell me what I should do to check this? thanks

I'm using this cable for my sub

http://www.monoprice.com/products/produc...&seq=1&format=2

It was recommended to me either on the axiom forum or the avs forum. Is it okay? or should I be using something else? I read on the monoprice reviews that I might need coaxial cables on both ends (3 review from the top):

http://www.monoprice.com/products/produc...rmat=4#feedback

Maj, the sounds that you've described wouldn't appear to have any relation to a ground loop, which is a continuous relatively low level hum not related to changes in the program content.

The receiver sub output or the cables also wouldn't account for what you describe. The poster at MonoPrice was simply saying that after he ran the coaxial cable behind the wall he connected the receiver and sub with short lengths of the same cable.

From the information that you've given, an internal defect in the sub appears to be most likely.

@JohnK

Yeah, it's looking like that. I'll do what I can to check it out here, and if I can't figure it out I'll just wait until I can bring the sub down and let them have a look at it. I'm fairly certain something happens while in transport. The truckers that come up here drive like maniacs and the road to hear is NOT the kind of road you want to be speeding on; bumps and swells and potholes - it's a dangerous trek! Just my opinion.

That has to be frustrating. I really hope you can get it sorted, as you should be enjoying that sub.

Well, I'll be bringing the Sub back (for SURE this time) august 26th. I'll let them check it out and see what's up. I'll be spending a week in Cuba =) so that should give them the time to work out the kinks! I'll let you know what comes of it (and my week on the beach with bikini clad women! wut wut! lol)

Have fun in Cuba! I would love to vacation there sometime. Relaxin on the beach drinking mojitos and smoking cigars .

Don't mess around to much with them bikini clad women, something of yours might fall off a few months later.