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I get an odd ground hum problem. I say odd since it's not 60hz. It' a -30dB 30hz beat & a steady -50dB 120hz. Right now it's so deafening I'm using my Panasonic SF27" TV's cheapo internal speakers. I'm thinking of trying Mondial:Magic but can't determine source. I'm using high end shielded cable. Can the RF cable contaminate the signal even while the TV is off? I unplugged the RCAs & saw a definite spark.
....just my 2¢
» Mart £ «
Audio Asylum
where the Retentive & Obsessed are the Analysts
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So, Mart, what the heck happens when you disconnect the CATV source? If I understood your question correctly, yes, differing ground potentials can exist and cause problems even if the monitor is turned off.
The little voices told me to get back to work.
I thought it was my cheap RS powered splitter, but no. It's the Cable TV signal. I guess Mondial Magic is in order.
....just my 2¢
» Mart £ «
Audio Asylum
where the Retentive & Obsessed are the Analysts
Try HomeTech ; I got one for $10 bucks shipped. It's called a Ground Breaker (and it says it has a surge suppressor in it as well). Anyhow, it seems to work very well.
-- Greg
Well, technically it's probably not the CATV signal, but a potential between the CATV ground and your electric ground.Mondial charges, what, $100?
I use an $8 version, I forget who makes it, but it works fine. A lot of installers carry these around and give them away to their customers.
Do a web search.
The little voices told me to get back to work.
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