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Bass leaves after amp warms up?

I don't understand-after my Musical Fidelity M6i amp warms up for about an hour I notice the deep bass & kick drum aren't the same.
They sound less musical with loss of weight/depth.The notes are there but the moving of air have left.Sound is has much less impact and boreing.
I had the same problem with Bryston amp so there is no defect with amps nor with the rest of my equipment/
PSB Synchrony one speakers,AQ cables,Bryston CD Player.
My question has anyone heard similar & is there a plausable reason?
fishing716
mapman's avatar
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mapman
15,679 posts
 
...but gotta wonder what the original MF amp would sound like now.....
tboooe's avatar
tboooe
1,009 posts
 
06-28-13: Mapman
...but gotta wonder what the original MF amp would sound like now.....
Mapman (Reviews | Threads | Answers | This Thread)

Agreed...I think the MF M6i is a GREAT int amp. Definitely a bit more organic sounding than my Accustic Arts which is more dynamic, quick, and clear.
acresverde
170 posts
 
But if the the AQs were miswired, it shouldn't take an hour for the bass to go south. Yet I still don't think there is/was anything wrong with either the MF or the PSBs.
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lowrider57
3,018 posts
 
But he also said he reversed the phase on the interconnect
almarg's avatar
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almarg
8,673 posts
 
Actually, what he said he did with the interconnects was to reverse channels, not phase. He didn't say anything about also reversing channels with the speaker cables, so the right channel is apparently being reproduced by the left speaker, and vice versa.

Best regards,
-- Al
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