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CM labs 920
CM labs 920
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Old 14th January 2012, 01:18 AM   #1
john dozier is offline john dozier  United States
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Default CM labs 920

Anyone know anything about this amp? I am considering buying one and would like to know what to look out for in terms of possible problems. I owned a CM labs 35wt/channel amp years ago and drove Frazier Super Texans with it. It was built like a tank and sounded very good. Is the 920 in the same league? Thanks
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Old 14th January 2012, 06:41 PM   #2
djk is offline djk
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Click the image to open in full size.

I own one in need of repair. It uses the hard-to-find 2SD555/2SB600 TO-3 outputs, long discontinued, and frequently counterfeited.
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Old 14th January 2012, 10:05 PM   #3
tvrgeek is offline tvrgeek  United States
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I had a 100W per side one when I was in Colorado. Blew up three times. They only fixed it twice, so it became a mono amp. I guess an instability issue. I was not impressed. Replaced it with a Sayno Plus 100 that a: worked, and b: sounded better. That was eventually replaced by a B&K 140. , and now Rotels
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Old 29th September 2015, 03:17 AM   #4
dangus is offline dangus  Canada
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Based on my hand-drawn schematic, it doesn't seem to have much protection apart from a DC output fault relay.
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