Received the item this week and installed it in my setup today(Sunday PM 1/19/14). But I have a terrible hiss and hum problem that is new to my setup. If the EQ is bypassed, no hiss or hum are generated. But if the EQ is engaged then hum and hiss...
1477742
Try putting a barrier between the audio or speaker cable to your power cables. Or don't let both cables, run side by side for it will create interference, such as distortion noise. Using a power conditioner helps a lot.
429255
I'd replace it. If had one for several weeks which I use for about 10 hours per day. It's been great so far with no humming noise!
1071957
Mine have been great! A horrible hum sounds like a power problem. This unit did not come with a power adapter...
391879
I have the EXACT same problem. I use them on my laptop but the first thing I noticed was the hiss. I was shockingly disappointing and tried the other headphone outlet but to the same effect. Its just not one bud, but both, so I'm guessing its not like a damage issue.I'm not a sound blaster and usually have my music playing kinda low so the hiss is always noticeable.Right now I'm contacting Sennheiser about the issue.
871113
Lucy, I found the source of my hum. I have Direct TV HD. I found that going into the menu settings/Audio/Sound Effects and turning that option off, I was able to rid myself of the annoying hum. The option has something to do with keeping the audio settings from channel to channel, while it is changing you hear dead air except for the hum. Nice and quit now. Love this receiver! Larry
625901
In most cases it's your cables. Depending on whether you are using the high impedance or low impedance outputs check the cables. Also try separating the place where you have the board and amp plugged in. Try putting them in them in separate wall sockets at two different points in the room. It may just be a 60 hz ground loop hum.
1327634
As others have suggested, the hiss is coming from something upstream of the speaker. I have two of these speakers and have used them extensively, and they are silent except for the signal coming in. If you are using a mixer or some other input device that requires you to set the level, pay close attention to the procedure for doing so. Improperly set levels can cause noise problems when you turn up the volume to the level you're after.
1326998
Is the hum coming from the power adapter itself? If so, it might be getting ready to go bad. Replace before you have a fire. If the hum is from the speakers, re-post and I might have some suggestions for that as well.
1688166
The best thing to do is to try using a Monster Power Stage 2 (or better) line conditioner. For higher end audio systems, sometimes you get that hiss, so you eliminate the hiss by using a line conditioner. It's definitely worth a try.
1688832
mine doesn't hum. I wish I could help. Maybe it is the model. I had one, that i loved, and one day, it just quit working. They didn't make that model anymore, and I had to cut the plug, and send it to them, and then they sent me the most similiar model. But I really loved my old one. It was beautiful. This one works great, but is not as aesthetically pleasing to the eye. :-(
367804
I have the EQ between my Carver C-1 Pre-Amp and Carver M-1.0t Amp. When the EQ is in bypass, it's perfectly quiet. When it is engaged, I have a noticeable hiss. The control level is very good. I have KEF 103.2 speakers and the level adjustments EQ my listening space very well.
2358
I use it specifically to send TV audio to my sound bar. I haven't detected a hum. However, I normally unplug it when I'm not using it.
1327636
if you have hiss it may be the source signal not the speaker. The source maybe to high. Turn on your audio source then turn thr music all the way down. if you hear the hiss than its your source not the speaker
1741342
There may be a number or reasons why the hum comes back and goes. The cartridge may not be securely plugged in or connected. The phono jacks may be loose. Other wires may not be securely connected. The unit is defective. There are always a certain number of units in any production run which are lemons. Perhaps there are problems with your amp circuitry or the connection to the amp or a bad circuit within the unit that causes intermittent humming. Perhaps there is a bare wire touching another wire or a loose wire other than the ones mentioned above. If you like the unit enough take it to a local audio repair tech and have her/him check the unit out on pro gear. There may be a number or reasons why the hum comes back and goes. The cartridge may not be securely plugged in or connected. The phono jacks may be loose. Other wires may not be securely connected. The unit is defective. There are always a certain number of units in any production run which are lemons. Perhaps there are problems with your amp circuitry or the connection to the amp or a bad circuit within the unit that causes intermittent humming. Perhaps there is a bare wire touching another wire or a loose wire other than the ones mentioned above. If you like the unit enough take it to a... » Read More There may be a number or reasons why the hum comes back and goes. The cartridge may not be securely plugged in or connected. The phono jacks may be loose. Other wires may not be securely connected. The unit is defective. There are always a certain number of units in any production run which are lemons. Perhaps there are problems with your amp circuitry or the connection to the amp or a bad circuit within the unit that causes intermittent humming. Perhaps there is a bare wire touching another wire or a loose wire other than the ones mentioned above. If you like the unit enough take it to a local audio repair tech and have her/him check the unit out on pro gear. « Show Less
2284703
Yeh, I bought mine 10/15/08 and had the same problem.It turned out to be a ground loop between my Receiver and my Samsung TV.I put a two-prong "cheater" on the Samsung power plug and that fixed it.Not the best way, but the hum is gone.
680524
Nothing I tried that and got nothing. .i even bought a y splitter to run 2 sets of speakers and got this loud humming sound!!
1311228
I am going through the same problem that you have and listen to the same type of music (classical music and folk music) and have been told the same thing. I have a friend who has the same system as me and I used one of his speakers in place of my one malfunctioning one and I don't hear the hiss anymore. I'm in the middle of a troubleshooting argument with their staff right now, and I fear that they would be wasting my time and theirs in insisting it is the amp in the back.