Hi All,

I have a z5500 5.1 system set up throuhg my computer and my room, which is right next to a small bathroom and the laundry room. Both have a fan, and when it turns on nothing happens, but when either get turned off, it makes this loudish (at the very least noticeable) popping noise...

I have it plugged into a good surge protector, but I'm not sure what else (if anything) I can do to resolve this problem (or what the problem is)?

Any help would be greatly appreciated!!!

Hi All,

I have a z5500 5.1 system set up throuhg my computer and my room, which is right next to a small bathroom and the laundry room. Both have a fan, and when it turns on nothing happens, but when either get turned off, it makes this loudish (at the very least noticeable) popping noise...

I have it plugged into a good surge protector, but I'm not sure what else (if anything) I can do to resolve this problem (or what the problem is)?

Any help would be greatly appreciated!!!

There's an excelent chance that the "pop" is being induced through radiation and ingressing into the audio cable going to the sub. Try disconnecting the cable to see if the popping goes away. If it does, you have found the culprit. It is now a matter of possibly rerouting the cable or changing to a better shielded cable.

If removing the cable does not get rid of the pop then it is possible it is being induced right into the sub's amp.

Unfortunately the cable comes directly out of the receiver console/unit thing, so changing the cable is not an option =( is there anything I can do further shield an existing cable?

Also, do you think rearranging my room to have the sub on the other side will make a difference (adding extra distance... though not much maybe like 10 feet or so)?

Thanks!

Get your A/V system off the circuit. You might need to get some heavy-duty power extension cord, but that's what I would do.

- Steve O.

Ohh okay, how can i tell which sockets are on a different circuit though?

what about a line conditioning power bar? like monster? sounds like a surge in the power causing the amp to pop the sub

So you mean getting a better power strip? I think i have decent one belkin one... should i get a monster one?

Ohh okay, how can i tell which sockets are on a different circuit though?

Turn on your fan, then go to the breaker box and flip off the breaker that is marked correspondingly. If they are not marked then turn off each breaker and have a helper yell (or call your cell phone if the breaker box is far away) when the fan goes out.

Once identified, go try your audio equipment. If there is no power, then they are on the same circuit. If there is still power with the breaker switched off, then you have another issue.

Before you go off the deep end with all this nonsensical suggestions. Try disconnecting the cable to see if the popping goes away.

If it does, no amount of power filtering or changing to another AC circuit is going to help because The interfierence is being transmitted through the air into the cable!

This, and a constant audible hum from the sub, is a known issue with the Z5500. Logitech's 5.1 discussion forum (http://forums.logitech.com/logitech/board?board.id=51_speakers)

This, and a constant audible hum from the sub, is a known issue with the Z5500.

Can you direct me to a specific post? Or is there some kind of solution? :(