After my unit has been on an hour of so it starts to hum. Turning down the volume or lifting the ground doesn't, does anyone have any ideas as to t
1398530
Return it. My unit did that right before it burned out 4 of the five channels. I returned it and bought a sony.
1073593
I have several of the units and there is not a buzz noise only a hmmmm like a fan. I think something must be lose in your unit. I can put mine on silent and I don't hear it at all...try that....if its still buzzing then something is wrong. They are great units.
367809
Mine has a slight hum. Some kind of ground loop, I guess. I'm using a 3-pin to 2-pin adaptor on the power cord--the hum is much worse without it. I've tried both the balanced and phone plug inputs (with RCA adaptors)... no difference. I haven't tried breaking the ground on one of the input cables yet.
2060869
There is a very very quiet hum. I cannot hear it unless my put the timer to my ear.
95292
Mine hums a little, but to hear it you have to be really close to the unit and have the sound volume low. Basically, it is transformer hum and because the transformers are toroidal, it does not find its way into the actual audio output, so I don't worry about it at all.
558409
You're experiencing ground loop hum. Try using batteries only. If you still here loud hums, send it in for repair.
1664945
Yeah, that sucks. I figured it out after I couldn't return them anymore. I just gave them away and bought a much more expensive one to replace them. I got a Crown 28M to replace my two Pyles. It has been on for about 4 months now, and never hummed. I needed an always on system for PA work.
2284700
Mine is not comming from the sub. I've disconnected the sub and all the speakers 1 at a time and still have it. I did go into the Direct TV set-up and changed some audio settings and it is now at a lower voluume, but is still there. I thought maybe it was the Direct TV Receiver, but I disconnected it & still get have the hum running the receiver on fm stations.Thanks for the inputP.S. I have the Onkyo TX-SR705, not the 805.
129126
The unit is not that loud. You of course can hear it running but the humming noise is tolerable.
1197106
Have you tried switching your cable? I've never gotten any humming when playing this, either through a tube or solid state amp.
558414
If I do not have anything (no Inputs) plugged into the amp, mine does not hum, even with volume turned up to max.
1315684
It hums but it is a quiet hum. We mounted it outside and we cannot hear it inside. We really like this unit and it was worth every dime we spent.
1695892
You know I had to go and check! However, I have an 828LM and no hum whatsoever. Have you unplugged (the replugged) the unit and tested it away from other equipment for this humming noise?
897166
Sounds like a malfunction. Mine is completely silent. I would send it back.
333126
Well, let me qualify my response, not unless the 'appliance' you have plugged in to happens to produce a humming sound. For whatever reason that is. LMAO!
2175290
I've had no problem with hum,Sometimes hum is caused by unshielded wires too close to speaker wires, or power cords too close to wires.Sometimes wires have defective shielding.Did you ever have a ungrounded turntable that caused a low hum??Anyway,check your wiring.If it happens on any input maybe it's wiring near speaker cables.If it happens on only 1 input replace those cables!!Not a design flaw!!Good Luck!! Dave & B.H.'s answers makes a lot of sense also!!
2201861
Have you ruled out a ground loop as the source of hum? http://www.youtube.com/watch?v=4YM1iwC6vhg http://en.wikipedia.org/wiki/Ground_loop_%28electricity%29