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I apologize for posting in the components something that I had posted a few weeks ago in the BFD forum; however, I've isolated the "hum" problem to my amp and avr and not the BFD.
I've unhooked everything from the system but the speakers and the power plugs, and every time I start adding the RCAs from my Yamaha 1800 pre-outs to my Sherbourn 5-210A the hum comes back. I've tried any number of combinations with the line outs, but once I get 3 or more hooked up the hum is back.
BTW, I have been outside to check the cable ground and it is tied right into the ground for main electrical service and the phoneline. I don't actually have a cablebox--I've been running it through my HTPC (which is down at the moment and unhooked from the system).
I've also connected my own ground wire between the AVR (phono) to a screw on the Amp's chassis. I've also tried cheater plugs for the 2 power cords for the Sherbourn. I've tried plugging all three power cords (Sherbourn's 2 and the Yammy's 1) into a surge protector so I can be sure they are on the "same leg"--and nothing gets rid of it!
When I just hook everything up to the AVR, no hum; when I just have the Sherbourn hooked up and not RCA to the Yamaha, no hum. These two just don't want to play together! I've even tried moving them both to different shelves in my closet (high and low) and still hum...
I've been at this for some hours now and am worried I'm either going to have to live with it (it isn't that audible) or I'm going to have to go back to just an AVR powering my system!
So, my questions are:
1. What would you try next?!
2. If I can't fix this, how bad is it--other than that I know it is there? Does it actually corrupt the signal, or is it just raising the "noise floor"?
I really appreciate the help. I've never had this problem before and was so excited to add some real POWER to my system--this has truly sucked the joy out of this upgrade I tell you!
I've unhooked everything from the system but the speakers and the power plugs, and every time I start adding the RCAs from my Yamaha 1800 pre-outs to my Sherbourn 5-210A the hum comes back. I've tried any number of combinations with the line outs, but once I get 3 or more hooked up the hum is back.
BTW, I have been outside to check the cable ground and it is tied right into the ground for main electrical service and the phoneline. I don't actually have a cablebox--I've been running it through my HTPC (which is down at the moment and unhooked from the system).
I've also connected my own ground wire between the AVR (phono) to a screw on the Amp's chassis. I've also tried cheater plugs for the 2 power cords for the Sherbourn. I've tried plugging all three power cords (Sherbourn's 2 and the Yammy's 1) into a surge protector so I can be sure they are on the "same leg"--and nothing gets rid of it!
When I just hook everything up to the AVR, no hum; when I just have the Sherbourn hooked up and not RCA to the Yamaha, no hum. These two just don't want to play together! I've even tried moving them both to different shelves in my closet (high and low) and still hum...
I've been at this for some hours now and am worried I'm either going to have to live with it (it isn't that audible) or I'm going to have to go back to just an AVR powering my system!
So, my questions are:
1. What would you try next?!
2. If I can't fix this, how bad is it--other than that I know it is there? Does it actually corrupt the signal, or is it just raising the "noise floor"?
I really appreciate the help. I've never had this problem before and was so excited to add some real POWER to my system--this has truly sucked the joy out of this upgrade I tell you!