"I did recently change my receptacle from a stock to a Hubbell but I don't think this would affect it."
Did you notice the hum before you changed to the Hubbell?
Did you notice the hum before you changed to the Hubbell?
"Amplifier Noise Floor" and hum acceptable?
https://parasound.com/a52+.php Based on the specs linked above, there is absolutely no way you should be hearing hum a foot away, even despite your speakers higher than average sensitivity. A slight hiss with your ear to the tweeter is the most you should hear. I had a similar issue with the Halo Integrated, though I could hear the hum from my listening position approximately 9’ away. I’d demand a repair, or refund if possible. No way the amp is meeting that alleged spec, and no $3K amp should exhibit such noise. Simply unacceptable. |
My Rowland model 102 (class D) - absolutely perfect silence. My Benchmark AHB2 - absolutely perfect silence. Both are silent even when listening in close proximity. Audible 60Hz is not acceptable IMHO. Since you tried more than one amp it is likely something wrong with wiring (ground loops?). I would take it to another location (friend) and try it there. |
It's not acceptable to hear hum thru the speakers from your amp. It's possible that it's the grounding scheme of the Parasound, but before returning it, you need to check the grounding of your Hubbell duplex. Pull the receptacle from the wall. Is there a metal box or plastic? Is the ground wire attached to a ground screw or a metal box? If using a metal box, the receptacle must be connected to it with a ground wire. A ground fault tester will confirm proper grounding. https://www.amazon.com/dp/B000RUL2UU/ref=cm_sw_r_u_apa_fabc_2A5ERAZ2Z0Y5P78X4C7T?_encoding=UTF8&... Have you tried using a receptacle on a different circuit? |
Obviously no one is reading the post. The OP changed out three amps, all had hum, albeit to a different degree. So the problem isn’t the Parasound or any other amp, it is a problem with your power and the Parasound is more affected by it. Do you have any fluorescent lights, dimmers, led lights or other noise producing things on that circuit? Particularly dimmers... they are notorious. You could have a ground loop, you could have a faulty interconnect. Not an easy problem to nail down, start with any dimmers etc. they are the easy ones. |