doudou Posted August 9, 2004 Share Posted August 9, 2004 the CP1 are stands right? i don t think the humming sound could come from stands... or your speakers stands are linked to a power source?! Quote Link to comment Share on other sites More sharing options...
doudou Posted August 9, 2004 Share Posted August 9, 2004 it only remains the amp or the control pod. Quote Link to comment Share on other sites More sharing options...
rjon17469 Posted August 9, 2004 Share Posted August 9, 2004 A good explanation of ground loop from http://www.epanorama.net/documents/groundloop/index.html: "When two or more devices are connected to a common ground through different paths, a ground loop occurs. Currents flow through these multiple paths and develop voltages which can cause damage, noise or 50Hz/60Hz hum in audio or video equipment. To prevent ground loops, all signal grounds need to go to one common point and when two grounding points cannot be avoided, one side must isolate the signal and grounds from the other." In short, do you have multiple audio devices, such as the source and amp, plugged into different outlets? Quote Link to comment Share on other sites More sharing options...
Evil Techie Posted August 14, 2004 Author Share Posted August 14, 2004 source is my comp plugged into the socket thats on the same plate as the socket that 4.1 is using im not sure but ive already tried powering the 4.1 from another outlet and it did not help and it didnt help btw CP-1 is the control pod Quote Link to comment Share on other sites More sharing options...
rjon17469 Posted August 14, 2004 Share Posted August 14, 2004 Did you try plugging the rears into a completely seperate source, like a CD player, to see if they were still humming? Quote Link to comment Share on other sites More sharing options...
doudou Posted August 16, 2004 Share Posted August 16, 2004 if the CP1 is a control pod and if you have changed it, it only remains the amp i hope we have forgotten something. Quote Link to comment Share on other sites More sharing options...
enginerd Posted August 20, 2004 Share Posted August 20, 2004 You say you have gotten a new CP-1 pod and still problems? At first I was going to say it's that darn 8-pin DIN connector that everyone ends up breaking. You also say you've switched your satellite speakers so that the ones you were using for front were wired to the rear and you get noise on the ones wired to the rear inputs. Well, you've got a new preamp, so that's not the problem. Speakers good....preamp good...maybe the problem is within the amplifiers for the rear channels. Here's something to try if you are bored/curious. If you are not not, then my advice is to get a new amp. If you open the subwoofer enclosure and disconnect the subwoofer wires from the amplifier panel so you can flip it around and look at the board, you will see a motherboard with 5 boards standing up vertically, mounted on a large metal block. Each board corresponds to an amplifier for each of the satellites and one for the sub. By the way, be careful about opening the sub right after powering it down as the power supply capacitors retain a high voltage for several hours (they are at 168V on power down). If you are impatient, you can take a decent sized power resistor (I use a 10 ohm power resistor) and touch the leads to the ends of the larger capacitors on the board. The plug in boards are kind of smushed together, and on each one you will see several can-shaped eloctrolytic capacitors mounted vertically and bent sideways. For starters you can inspect the capacitors for any kind of stuff oozing on them. You can even try swithicng speaker output connectors between the amps and see if the noise comes out of a different channel. If you're not up for this, like I said before, I suspect it's the amp (given that you have tried everything else...). Quote Link to comment Share on other sites More sharing options...
doudou Posted August 23, 2004 Share Posted August 23, 2004 if your promedia is still under waranty, do not open it!!! else it worth trying, because you might be able to fix the problem by yourself and quickly instead of shipping your promedia and waiting for a long time. Quote Link to comment Share on other sites More sharing options...
Evil Techie Posted September 9, 2004 Author Share Posted September 9, 2004 hmm ive still got the warranty dont want to open it up just yet although im tempted and curious i still want to see what promedia tech support come up with now probably ship to Micron in eastern canada for repairs... then ill be audioless for sometimes! :'( Quote Link to comment Share on other sites More sharing options...
cabman2 Posted September 27, 2004 Share Posted September 27, 2004 M-Audio LX4 2.1 These sound way better and don't have whimpey connections. They cost about the same as your system. I too had the same experience with my klipsch's. Trust me you'll be happy with M-Audio Quote Link to comment Share on other sites More sharing options...
Evil Techie Posted December 16, 2004 Author Share Posted December 16, 2004 what a pain... i got my klipsch promedia 4.1 back from Micron (tech support for klipsch in canada) they said they tested it for several hours yet could not hear the buzzing then told me to check sourcing i have even brought my promedia 4.1 to a friend's house yet it still hums the same humbug... all they did was to ship me another CP-1 after another email response from them i already switched 2 CP-1's! and its not the problem! Quote Link to comment Share on other sites More sharing options...
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