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m1.5t amp buzzing from both channels



Post Mon Jul 22, 2013 11:47 am

m1.5t amp buzzing from both channels

Hi everyone,

I picked up a M1.5t from a garage sale this weekend. The amp works fine except for a loud buzzing coming from both speakers. The buzzing happens all the time (connected to preamp or not). When connected to the preamp, the buzz does not increase when the volume is increased. I know that the problem is not with the speakers, since they sound fine with a different amp.

Any ideas? I'd love to give this old amp some new life.




Posts: 2933

Joined: Wed May 31, 2006 9:33 pm

Post Mon Jul 22, 2013 12:23 pm

Re: m1.5t amp buzzing from both channels

Most likely a cap going bad somewhere. Send it to one of the shops mentioned here and have a re-furb done on the amp....will sound like a new amp and you'll be good to go with this amp for another 20 tears! - Ed
FR: 400 disk changer with PS Audio Digital Link III DAC; Technics SL-1100A TT. QED Quenx1 IC's from DAC & TT to Adcom GTP-602 preamp/Tuner. AudioQuest King Cobra IC's from preamp to M1.0t mk-II opt2. QED Silver Spirals 4M wires to EPI 1000’s.
LR: AudioEngine wireless link from family room preamp to Barcus-Berry 2002R Sonic Maximizer to GlowPower Zyxt IC's to Sunfire 300x2 to Nordost 6M bi-source wires to AOS 28" MDF spherical speakers using six 6.5" woofers and eight 1" dome tweeters symm. arranged around the surface.
SS system: CX-995V DVD to AV-634x 3-4 channel amp (center/rears) & M1.0t mk-II opt2(fronts).
Garage: 300 disk changer to Entech 202.5 DAC to MXR150 Receiver (pre) to TFM-42 to EPI 400 speakers.

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