Audiophiles (stereo equipment connoisseur)

Unknown

Does the hum go away if you disconnect the cable feed line from the cable box?

Typically the cable line is grounded to a water pipe or ground rod where it enters the building. With the AV equipment a long distance away from this ground point, you may have a difference in ground potential and a resulting circulating AC ground current. If possible try using an optical cable to connect the TV 5.1 digital audio to the surround receiver. This will at least eliminate one source of a common ground path. You might also try eliminating the surge protector and connecting the equipment directly to the ungrounded outlet. Some suppressors have bypass capacitors connected from both Line and Neutral to safety ground, and since the outlet is not grounded, there may be no other path for this current to flow but through the associated equipment.

Surround systems are notorious for these kinds of hum problems, due to the many interconnections with different ground paths. The best plan to find them is to disconnect one source component at a time until the offending connection is found.

Paul Pollets

thanks!!

for the good advice. I've already installed an optical cable between the TV and the receiver.

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ScottMP

My Crew gave me

a small Sharp 5 cd stereo. It sounded good and even better whne I hooked up the Kenwood book shelf speakers I had hanging around. It even came with a woofer for the floor.

Problme started about five months into the dual speaker set-up. All of a sudden it just shut's off and it says PROTECT on the display. If I shut it off and turn it back on it works. I disconnected the added speakers abd it still does it. I called and was told to power it down and start over ( " by the way did you add extra speakers uh Ya ").

It still does it and I can turn it up to loud. Its like my mother is living inside the thing " Turn It Down ! "

They want $100.00 to take it apart and I have to bring it to them which is about an hour away to the nearest dealer ????

Scott

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Unknown

Do you have it located where there is limited air circulation? Typically the amp will have a thermal sensor on the output stage heat sink which will activate protection when the internal temperature reaches 185F.

Adding additional speakers lowers the impedance presented to the amp and increases the heat dissipation. Try locating a small fan behind the rear panel to provide additional cooling and see if that doesn't help

J.C.A._3

KISS fan....

I'm still a firm believer in the KISS method. (Keep it Simmple Stupid!)

My B&W DM360 speakers are about the best that money could buy ...at the time, for a simple Yamaha 75W receiver and a single tray CD player.

I didn't have the space for the B&W speakers in my new place...and purchased a Cambride Soundworks "Ensamble"dual woofer system.

I have to say that the neighbors have only complained a couple of times....and I like the sound, so it must be good!

Occassionally, I wire in the B&W's, and put them on the porch for great sound...while we have a "condo cookout" and to piss the other neighbors off.....once in a while

I quote Frank Zappa, Joe's Garage....TURN THAT DOWN !...I HAVE CHILDREN SLEEPING IN HERE....You used to be such a nice boy...You used to cut my lawn....

Tunes are the way WE deal with the world....So be it. Chris