I've got a Sony CDP990 I've had since 1990 and even though I've had newer players which have come and gone, this always returns to the rack as the sonics are very appealing.
I changed the output op amps from 5532's to OPA2134's which gave a nice improvement in overall detail and clarity. The original output caps (C406 in the schematic) are Elna Duorex II 47uF 63V and would like advise on whether to change these as they might be getting past their used by date. I'm leaving the rest of the player as original.
a. Change to Nichicon Muse Fine Gold 47uF 50V which I have.
b. Change to a MKT or MMK of 1uF???
c. Put in a link and have no cap but I can't always be sure the amplifier that comes next in the chain would have an input cap.
d. Leave the Elna's in there.
Any advise would be appreciated.
I changed the output op amps from 5532's to OPA2134's which gave a nice improvement in overall detail and clarity. The original output caps (C406 in the schematic) are Elna Duorex II 47uF 63V and would like advise on whether to change these as they might be getting past their used by date. I'm leaving the rest of the player as original.
a. Change to Nichicon Muse Fine Gold 47uF 50V which I have.
b. Change to a MKT or MMK of 1uF???
c. Put in a link and have no cap but I can't always be sure the amplifier that comes next in the chain would have an input cap.
d. Leave the Elna's in there.
Any advise would be appreciated.