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Fixed a hum, still have a question

I have a dedicated circuit supplying power to my outlet strip/line conditioner. I was having a persistent hum through Dunlavy speakers powered with EAD Powermaster 1000. Other componenets are EAD Theatermaster and Pioneer Elite DVD. All are connected to outlet strip. I got rid of the hum after inserting a cheater plug with no ground pin into the wall outlet. Can I leave it like this or do I have to reconnect the ground in some fashion?

Thanks - Dave
daphillips

Showing 2 responses by bob_bundus

bob_bundus
1,834 posts
 
You'd be safer with installation of an isolated ground since your existing ground is apparently noisy. If your strip/conditioner is a Chang, or similar with integral surge protection, then a ground is required in order for the protection device to have a place to shunt any supressed transients.
You could also go over your electrical system's connections for tightness & cleanliness, including the ground stake connection. Fixing any issues there could eliminate the hum problem while retaining the safety of a proper ground.
bob_bundus
1,834 posts
 
I just noticed a very affordable new (to me) coaxial isolation transformer device in the MCM Electronics preferred customer catalog. This one has type-F male at one end & female at the other. Stock #33-6925 list $17.19, presently selling for $12.95.
www.mcmelectronics.com
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