hum from speakers

agco

Need a little help with a problem. Theres a slight hum thats not noticable when playing music but when you mute the remote you can here it in the speakers or between songs when you know what to listen for. This amp does have a hum to it with everything turned off. Is this normal? It sounds good just when you discover this you know its there.

F1nut

Is it a hum or a hiss? Is this in your HT rig or a 2 channel rig?

agco

The amp seems to hum but listen up to the speakers it does seem kind of like a hissing noise it is in my ht system.

F1nut

A slight hiss from the tweeters when you are up close (say 6") to them should be considered normal. If you can hear it from your seat, not normal. The hum from your amp is probably not normal, but I don't know your amp.

agco

just checked out a little closer and just had the amp turned on and it makes just a slight hum you half to get down close to it with your ear to hear it. but it seems more pronounced through the speakers. Not overbearing its just you notice it if you listen for it. You can hear it from the seating position when you listen for it or hit the mute.

tonyb

Ground loop.......

agco

What do you do for ground loop.

ken brydson

agco wrote: »

What do you do for ground loop.

Cheater plug on your amp.

agco

I it does have a hissing noise comeing from the tweeter area. The amp doesnt. I guess its just normal maybe listening a little to closely. I was looking at a ps audio humbuster I wonder if that may help i have had this monster surge protecter for quite a while maybe its time. Thanks for the help fellows

halo71

I was gonna ask if you had an DVR.

agco

no I dont just blue ray and cable. Its a little more pronounced throuh my cable not much. But i do know it is coming through the tweeter. Kind of like a buzzing noise.

BlueFox

Sometimes amps have a transformer that makes a slightly audible noise if you are close to it. However, it is a mechanical noise that comes from the amp, and does not come out the speaker. Hiss can be normal for some amps if the volume is cranked up.

agco

The hissing from my speakers stays at very low noise leval and i do hear it up close. when i do increase the sound leval the hissing noise does not grow louder. Its low enough noise leval when playing music you do not notice it. It must be just the nature of the amp and it increase through the speaker. The amp without anything but being powered up is pretty quiet I thought the sound was coming more from the amp but it is the speakers. Just a little concerned by the noise that was coming out of the tweeter which apparently is normal. I never had this problem before but this is the first amp that i have added to my ht system. thanks

tonyb

Could also be a bad cable, IC, to the amp. Personally speaking, I've never had a SS amp that hummed or hissed that wasn't from a ground loop or bad cable. Never a characteristic of the amp itself though it is possible.Cheater plug and /or try different cables, thats the easiest thing to try first, and the cheapest.

BeefJerky

agco wrote: »

no I dont just blue ray and cable. Its a little more pronounced throuh my cable not much. But i do know it is coming through the tweeter. Kind of like a buzzing noise.

I think it probably is a ground loop with your cable based on you saying it is more pronounced when watching cable. This occurs because your cable line is grounded to a different part of the ground than your power line. If it is a ground loop due to that, you will need one of these:
http://www.ebay.com/itm/Jensen-Transformers-VRD-1FF-Cable-TV-Ground-Isolator-/360191526561?pt=LH_DefaultDomain_0&hash=item53dd1686a1

This is what I use and it completely eliminates the hum, and does not degrade the signal or cause you to lose channels.

agco

When I do switch from my cable input to my blue ray it does stop the hissing noise. still has slight hum not very noticable though. I think im going to try this isolator. I do have a monster hts700 for my surge protecter so i think im going to look for a power conditioner to add on there. Thanks for the help i think this should do it.

BeefJerky

Here's a quick thing to try. When on the blu-ray input, unplug your cable line from the wall and see if the hum goes away. That will tell you quickly if that is the problem or not. Sorry I didn't think to suggest that last night.

agco

Thanks for that advice beefjerky. I did find what the buzzing or hissing was. I am on dish network and i had an hdmi upconverter hooked up which helped out my audio when listening to cable when I disconnected it the hissing through the tweeters stoped. The plug on the converter outlet only has two prongs instead of three. So that problem is solved. The amp itself runing if you get down close has a slight hum it sounds normal to me it seems pretty quiet. There is a hum in the speakers though not much. When increase the volume it doesnt get louder it stays the same.

leftwinger57

I do not know if we have the same problem ,but it seems that they are similar.I run a Yamaha RX-V665 through Klipsch smalls and a host of sources.I have a pronouned hum when all is plugged in ,the minute I unplug the HDMI cable in the out port on the Yamaha all the hum is gone. I think the only reason I run an out is to pick up the on-screen YPAO so that stays unplugged if and until I need the on screen function,since my system seems to calibrated to where I am satisfied I do not need that feature continually.I run all my sources through both systems but through process of elimination so far this is the only cause and effect that I can come up with.I have not tried the so called "cheater plug" which is easy enough to do.Alsoit definately a hum and not hiss.

tonyb

Try the cheater plug, it works. Could also be a bad cable somwhere in the mix.

agco

Thanks I did get the problem solved to my liking. I changed the ic first off couldnt tell much difference. I put a new panamax 4300 power box in instead of my old monster surge protecter that i had. Made a big difference. Another thing that i did was change out my speaker wire on the front with some 11awg wire. Never thought speaker wire could make a difference in the sound but it does. It made the base better imo.