Denten
Addicted Member
My Luxman L-530 will drive 4 ohm loads all day long, the "internal" heat sinks seem to be there hottest when it is at idle, 130 degrees ( class A )
IMHO Chassis design is just as important as how much heat sink an amp has.
In the L-530 the big heat sinks and driver boards are isolated from the rest of the amp in a cooling tunnel, the hot air rising out the top draws cool air in the bottom past the sinks and the driver boards that are mounted on the sides of the sinks.
When I recapped this integrated I was surprised to see that after baking at 130 degrees all these years all caps on the driver boards checked ok for capacitance and showed no signs of heat stress.
IMHO Chassis design is just as important as how much heat sink an amp has.
In the L-530 the big heat sinks and driver boards are isolated from the rest of the amp in a cooling tunnel, the hot air rising out the top draws cool air in the bottom past the sinks and the driver boards that are mounted on the sides of the sinks.
When I recapped this integrated I was surprised to see that after baking at 130 degrees all these years all caps on the driver boards checked ok for capacitance and showed no signs of heat stress.