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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
fishing716 OP
316 posts
 
I had PSB Synchrony twos now I have PSB Synchrony ones which are all around better when everything works.
Auditioned Thiel speakers for about a week but results were inconclusive

Could PSB being 4ohm possibly be the reason?
No one else has these symptoms & my dealer disputes this.
Ironically I keep buying PSB anyway..
fishing716 OP
316 posts
 
I have Kimber PK 10 powerkord for the amp & Audioprism foundation II power conditioner.
I've also went direct into the wall.
None has proved to be the issue
almarg's avatar
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almarg
9,670 posts
 
Did the Synchrony Twos exhibit the same symptoms as the Ones?
Could PSB being 4ohm possibly be the reason?
As Mapman asked earlier, what models were the Bryston amps?

Regards,
-- Al
fishing716 OP
316 posts
 
Yes Synchrony II' exhibited same symptoms as current one's

I had Bryston B60R SST & B135 SST
Both fine sounding amps

Thought I needed more power so got MF M6i 200 watts
csontos
1,311 posts
 
Al, Ralph, or Kijanki, have you read my previous post?
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