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Kimber 12tc incompatibility with ayre my-r twenty

I  am having a problem I have been trying to figure out for the last month . I think I have an answer now . I would like to know if anyone has had any similar experience .
i recently upgraded from an all parasound system with jc-1 , jc-2 , jc-3 to an all ayre stack with kx-r twenty , mx-r twenty, Qx-5 twenty, px-5 and cx-5. I retained all the kimber cables and speakers kef blade 2 speakers that I had.
The sound was phenomenal, so romantic so clean , amazing vocals , so powerful at the same time . I loved it, gave me goosebumps.
But the power amp would turn off to standby when I played it real loud .
i reached out to ayre. They have the best customer service in the entire audio business. Amazing group of people who love music and their products and stand behind their products. We tried a lot of trouble shooting and finally figured it was the kimber 12tc speaker cable as the culprit. With cheap Best Buy speaker cables the system functions flawlessly. They felt it had to do with high frequency oscillation or rf as the cables are not well shielded.
has anyone had similar experiences
I have reached out to kimber to get their input.
thank you .

newtoncr
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three_easy_payments
2,097 posts
 
I knew someone smarter than I would explain ;-) 
newtoncr OP
151 posts
 
Yes they are pretty long. 30ft each side.
any recs on cables . The amps are freaking good . 
Thank you 
newtoncr OP
151 posts
 
Al,
it kept tripping the dc offset protection on the mx-r twenty . High inductance explains everything. Any recommendations on cables that would suit my need . What about cardas Cygnus .
thank you in advance 
almarg's avatar
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almarg
9,670 posts
 
I would definitely recommend NOT choosing Cardas Cygnus. While electrical parameters don't appear to be provided for it at the Cardas website, its design is stated to be "based on our flagship Clear & Clear Beyond conductors." Those cables, in turn, have capacitances that are much higher than the 494 pf/meter capacitance of the Kimber 12TC which apparently caused your amp to have the problem.

In your post just above, btw, "high inductance" should have been "high capacitance." As in the case of Goertz cables that were mentioned by Jtcf earlier, high capacitance has been known to cause some solid state amps to oscillate at RF frequencies, even resulting in damage in some cases. And the 30 foot length of your Kimber 12TC brings its total capacitance to an amount that is comparable to the capacitances of Goertz cables at more typical lengths.

I have no experience with Ayre equipment, or with the Blade or other KEF speakers, so all I can suggest is that you research the Virtual Systems section here and see what others are using with those products. And given the 30 foot length I would suggest ruling out any cable having a capacitance of more than say 50 pf/foot, which is about 1/3 of the capacitance of the Kimber.

And if the capacitance of a cable you are considering is not specified, I would contact the manufacturer and ask.  And if the manufacturer can't or won't provide that information I would look elsewhere.

Good luck. Regards,

-- Al
 
newtoncr OP
151 posts
 
Thanks Al
the problem is the 30 ft length . That’s super long . John Atkinson reviewed it with cardas clear cable in his review on stereophile 
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