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M-400 Buzzing



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M-400t CUBE

Posts: 146

Joined: Mon Aug 31, 2009 8:04 am

Location: Homer,NY

Post Fri Feb 19, 2010 10:22 am

M-400 Buzzing

My M-400 has developed a buzz in the amp and now I can hear the buzz through both speakers. Could someone who may have had/have the same condition have any idea what this may be?

I'm planning on sending this to Rita soon, maybe as soon as next week but it's buggin the hell out of me :( . I'm taking it off the rack today and putting my newlt restored, from Rita, M-400a back on. But, whenever a piece of my gear developes a problem, I like to know what it is. Thanks for any assistance or info
Currently In Use
Current Rack; Carver M-4.0t Power Amp, Carver C-4000t Pre Amp,Empire 598III Turntable, Denon DL-103R cart/stylus,Pioneer RT-909 Reel To Reel,Nakamichi Dragon cassette deck,DBX Pro Series 231 Dual Channel 31 band EQ,Pioneer PDR-555RW CD,DBX-3bx,Berwun Research 7000A TNE,DBX-224x DS TypeII NR, Klipsch Lascalas "Loud,Proud,Clean & Mean"


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R.I.P. Friend
R.I.P. Friend

Posts: 7126

Joined: Wed Jun 06, 2007 8:29 pm

Location: The west's most mid-western town, Scottsdale, Arizona

Post Fri Feb 19, 2010 10:31 am

Re: M-400 Buzzing

I had a buzz from an M-400 I bought through one channel. Rebuilding it did the trick. Never quite narrowed down what was the cause, but it went away after the rebuild.
It should sound like it isn't there!
There is a difference between hearing and listening...
Making life enjoyable through expensive electronics.
Carver: C-4000 & C-1 preamps, PSC-60 preamp/tuner, TX-11a tuner, M-400 (2), C-500, M-500, M-500t, M-500t Mk.II, A-500x, AL-III loudspeakers (2 pr.)
Sunfire:Theater Grand III processor, Ultimate Receiver, Cinema Grand Signature 400 ~ seven, True Subwoofer Mk. II, D-10 Subwoofer

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