2. amps-preamps
  3. 1101360697

Buzz from speakers

Hi,
After all the long search, buy, sell, I pretty much done with my system. BAT VK-D5 -> Emotive Audio Sira LE -> Art Audio Jota (w/ KR300BLX) -> SAP J2001-MKII speaker (diamond tweeter, horn midrange and 12" woofer at 97db). The sound are great so far, missing the bass a little, but ok for my kind of music (classical).
However, I noticed there's buzz in my speakers. The buzz sound appear when I just turn the power amp on. I tried to switch the outlet, there's still buzz. I tried to lift the power cable, using cheating plug... tweak around, moving around, still can't get rid of the buzz...
In this case, would it be the amp or the speakers?
Any suggestion/idea will be greatly appreciate.

Thanks
linkoping

Showing 3 responses by terry

terry
17 posts
 
Chan

Try lifting the ground on your CD player.

Also try unplugging your cable system. If you have a cable TV jack coming out of wall, unplug there. Cable TV has a "ground" that is different from the electrical ground of AC. Often it is the culprit in hum. If so, Mondial designs has a "Magic" box (I forget the exact name) that you connect between VCR or TV/cable box and the incoming cable line. Sells for around $100 (see www.amusicdirect.com; they used to sell).

Good luck.
terry
17 posts
 
Chan

You can also swap speakers if you have another pair. The J-2001 are VERY revealing, so that may not work. But you could put the left speaker on right side and vice versa to see if the noise travels with the speaker.
terry
17 posts
 
Chan

Thought you had buzz in one speaker only. Ground loop is often louder in one speaker, not always though.

You had CJ amps before the Art Audio. Did you have a buzz with the CJ? If not, could be the transformers on the Art Audio or one of the tubes (possibly going bad). Low powered SET amps are often guilty of displaying audible hum or buzz. Won't mention brands in deference to the manufacturers, but it is not that uncommon.

Do you have another amp you can substitute?
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