A friend of mine has a Harman/Kardon AVR 2550 and we're considering adding PSU capacitance and replacing the coupling capacitors with MKT/MKP type units.
There are a couple of questions I have with this amplifier:
- The transformer gets pretty warm; is that a matter of bad design?
- Each channel's own amplifier has a large number of electrolytic caps; I wonder why (I don't have a service manual to quickly look it up). I would expect one decoupling cap, and two power supply buffers, but what are the other caps doing on the PCB?
Also, any other suggestions for mods on this amp?
There are a couple of questions I have with this amplifier:
- The transformer gets pretty warm; is that a matter of bad design?
- Each channel's own amplifier has a large number of electrolytic caps; I wonder why (I don't have a service manual to quickly look it up). I would expect one decoupling cap, and two power supply buffers, but what are the other caps doing on the PCB?
Also, any other suggestions for mods on this amp?
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