Occasional Popping on Center Speaker

YellowJacket

I've just bought a RM6900 set and the center channel speaker pops occasionally (every 15-30 minutes) when watching TV or DVDs, even at low volumes. No popping at startup. All the other speakers do not have the popping problem. I've already read the popping descriptions in the library.

http://www.polkaudio.com/caraudio/products/amps/?helpid=11

I'm driving the system with an Onkyo TX-SV343 receiver. The center channel is 50W (1 kHz, 0.15% THD, 8 ohms) in surround mode according to the manual. The wiring is Monster THX SP 16 gauge. I've triple checked the connection and it seems solid. However, it is sitting atop a CD player (due to space limitations) that probably reverberates and reduces sound quality. Could the thin metal case of the CD player be an issue? Any other suggestions to help me diagnose?

Schwingding

It could be, but it sounds like there is a stray voltage build up somewhere that is discharging into your center channel. Suggested action(s) - remove the CD player from the equation, also, replace the center with another speaker. If the "pop" moves you have a speaker issue. If not, its somewhere else.

Strangely enough, I have not changed ANYTHING in my system, but last night it started popping randomly - several speakers are affected. I _AM_ in the process of string new wires for new lights, but none of them have been connected - no electrical circuits have been disturbed yet! WTF! Even with the AVR on standy I get pops. Turned off the amps, no popping. So I have a mystery, too!

MillerLiteScott

Yellow jacket,

Maybe try some of the those little rubber feet for an insulator between the speaker and the DVD player. You can find them at Home Depot in the hardware isle.

Schwingding sounds like you are stirring up some static electricity from the carpet. Just a guess.

Schwingding

Scott you may have been correct. I finished the job last night and returned the room to normal (but with good riddance to the nasty overhead flourescent lighting). Turned everything on and enjoyed an episode of "Rome" - spectacular PQ on DVD, by the way.

No pops at all. When you coming over for a listen?

MillerLiteScott

You let me know when is good for you. I just have to make sure my wife has not committed me to something or if I have to stay home with the kids.

PM me and we can figure it out. I am really interested in hearing your set up.

YellowJacket

Well, it's not the speaker. I replaced the center channel with a bookshelf speaker and had the same problem. I've moved it around the room, to eliminate sitting atop the CD player from the equation, without improvement.