Magfan,
Ok, I went ahead and rechecked again as promised, I wanted to be sure my first readings were correct.
I'm using an infrared thermometer and checked from front to rear and all fins in an attempt to find the hottest point on the amplifiers. The hottest point does seem to be near the front panel in between the topmost and second fin. The amps have been kept in stand by for days, I set my cdp on repeat, left the house and let them run for several hours at a moderate volume. I got a maximum temp of 121.4F.
FYI; This is a new pair of amps that are only about two weeks old and I agree; I doubt that Pass would let a set leave the factory without checking and double checking the bias.(As a matter of fact I believe they set the bias, run the amps for 24 or 48 hours and then recheck again.)My needle hovers just to the left of the center line and stays there unless the volume is turned to an unbearable to me level. Though I know this is not much of a scientific way of checking for correct bias setting I hope this helps out anyone with questions on their amps bias setting. To be honest I think that Pass Labs class "A" amps just run cooler than most other class "A" amps.
Ok, I went ahead and rechecked again as promised, I wanted to be sure my first readings were correct.
I'm using an infrared thermometer and checked from front to rear and all fins in an attempt to find the hottest point on the amplifiers. The hottest point does seem to be near the front panel in between the topmost and second fin. The amps have been kept in stand by for days, I set my cdp on repeat, left the house and let them run for several hours at a moderate volume. I got a maximum temp of 121.4F.
FYI; This is a new pair of amps that are only about two weeks old and I agree; I doubt that Pass would let a set leave the factory without checking and double checking the bias.(As a matter of fact I believe they set the bias, run the amps for 24 or 48 hours and then recheck again.)My needle hovers just to the left of the center line and stays there unless the volume is turned to an unbearable to me level. Though I know this is not much of a scientific way of checking for correct bias setting I hope this helps out anyone with questions on their amps bias setting. To be honest I think that Pass Labs class "A" amps just run cooler than most other class "A" amps.