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- Newsgroups: rec.audio
- Path: sparky!uunet!mnemosyne.cs.du.edu!nyx!tlode
- From: tlode@nyx.cs.du.edu (trygve lode)
- Subject: EAD Transport + Threshold Amp = buzzing noise?
- Message-ID: <1992Dec27.200858.19604@mnemosyne.cs.du.edu>
- Sender: usenet@mnemosyne.cs.du.edu (netnews admin account)
- Organization: Nyx, Public Access Unix @ U. of Denver Math/CS dept.
- Date: Sun, 27 Dec 92 20:08:58 GMT
- Lines: 33
-
- Here's a bizarre question for you audio.mavens out there: at the moment
- one of my stereos has an EAD T-7000 transport driving an EAD DSP-7000
- processor driving a Mod Squad Deluxe Line Drive driving a Threshold S/200
- driving a pair of Apogee Stages. (There are about five other source
- devices as well, but they don't seem to be causing the problem.) Now,
- about once every two weeks or so, the amplifier itself will begin
- emitting a loud buzzing noise; this does not affect the operation of
- the amplifier, nor is there any buzzing or distortion added to the sound
- coming out of the speakers. This buzzing persists until the amplifier is
- turned off or the transport drawer is opened and then closed again, at
- which point everything is OK for the next week or two.
-
- The only connection from the transport to the rest of the stereo is a
- Straightwire coaxial digital cable; everything is plugged into the same
- wall outlet with grounded plugs, though there are three power strips
- (one for the amp, one for digital sources, one for analog sources).
- This problem has occurred with two different EAD transports (and
- processors), but when I have used one of the EAD processors with a
- different transport the problem has not occurred. Various other pieces
- of equipment have been in and out of the system, including a Muse model
- 18 sub between the line drive and the amp, without affecting the problem.
-
- Anyway, I'm rather at a loss to figure out anything that could be going
- on here--anyone in net.land have any ideas? Is this hard on the amp?
- Should I expect Rod Serling to step out from behind one of the Stages
- at any moment?
-
- Trygve (P.S., I've also got an extra Conrad Johnson MV-50 recently
- retubed with Golden Dragon tubes; asking $595, would prefer
- to sell to someone in the Denver area so you can see and
- hear it before deciding to buy it.)
-
-
-