Timcat
pfm Member
I have two Bryston 4B3 power amps; one a dealer's demonstrator that is 5 years old and a second that is brand new (the demonstrator will be going back this week). The new one runs much hotter than the older one, both at idle (switched on but with no music being played) and under load. The difference is very obvious to the touch. I put a temperature probe on the heat sinks of both amps and the old one measured at 37.5 C and the new one at 45 C, both under the same very light load. The probe was placed in exactly the same place on both amps and both channels of each amp measured the same. The amps were measured in the same location.
This is quite a large difference, anyone know of any possible reason for this? I am concerned that something is wrong with the new one. Maybe something is out of adjustment, or could there have been a minor design change in the 5 years since the older amp was built?
The new amp does sound a little more detailed and refined than the older one, but the difference is very slight.
Anyone have any ideas?
This is quite a large difference, anyone know of any possible reason for this? I am concerned that something is wrong with the new one. Maybe something is out of adjustment, or could there have been a minor design change in the 5 years since the older amp was built?
The new amp does sound a little more detailed and refined than the older one, but the difference is very slight.
Anyone have any ideas?