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Follow up questions regarding my NAD C375BEE

I recently placed a posting regarding the protection circuit activating on my NAD C375BEE running Totem Model One Signature speakers. A poster on another forum indicated that the NAD is not robust enough to operate at the impedance load presented by the Totems and that I have damaged the amplifier. Prior to my purchase I did some internet research and found many folks running Totem speakers (including the Mani 2!) using NAD amplification without this issue. Any information or guidance regarding this dilemma would be greatly appreciated. If any readers noticed my first posting I failed to include my REL Strata II subwoofer in my roster of equipment. The REL developed a hum when I introduced the NAD into my system. Coincidence or related to my problem?
Thank you, Joseph
joseph54
valinar
471 posts
 
Are you running the REL through the low level or the high level inputs?
runnin
397 posts
 
Wow, I was going to say the suggestion that the NAD can't handle the Totems is ridiculous. Something else is going on there.
tls49's avatar
tls49
1,351 posts
 

Could the protection circuit activating be caused by excessive heat? A basic question, but I must ask if there is plenty of room around the NAD, top and both sides? Is it in a cabinet?
zd542
5,339 posts
 
"I recently placed a posting regarding the protection circuit activating on my NAD C375BEE running Totem Model One Signature speakers."

"The REL developed a hum when I introduced the NAD into my system. Coincidence or related to my problem? "

Is the protection circuit activating on the NAD, as well as having the hum from the sub?
bigtee
803 posts
 
I'm not positive the NAD uses a 3 lug connector (some NAD amps don't) but if it does, use the cheater as Rar1 suggests and see if the hum goes away.
If the NAD does not use a 3 prong connector, use the cheater at the sub power cord.
Another trick is to use a small gauge wire connected from the chassis of the NAD to the sub amp chassis. It may have a ground lug on the sub-not sure as I'm not familiar with this brand. Worth a try.
As for your amp going out on protection, is it both channels or one channel? If both, I would suspect something in the power supply of the amp. This would require a visit to the shop for correction.
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