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Audio Research D-52B: any suggestions for caps?

My old Audio Research D-52B is now considered "End of Life" by the manufacturer. I need to replace some large power supply capacitors (60,000 uF 40V) that are no longer available. While I'm at it I may re-cap my Audio Research SP-6A. I'm not up to date on the state of capacitors and high end manufacturers. Can anyone offer suggestions for replacing old aluminum electrolytic capacitors (e.g. 2200 uF 100V, 200uf 450V, 300uF 300V). Not all are screw mounts. I am the original owner and have the schematics and parts lists for the D-52B and SP-6a/b. I also have MG III b's whose crossovers probably could use re-capping.
donwillenborg
don_c55
1,025 posts
 
The Magnepan crossover uses film capacitors and those probably can go forever. No need for replacement.

For the electrolytics I suggest Sprague or Mallory, they are good brands.

Do a google search for suppliers.
hifigeek1
770 posts
 
Large value, high voltage computer grade 'lytics are almost next to impossible to get and very, very expensive. The cost would exceed the value of the amp. There are some very good solid state amps out there on the used market that would be an improvement over the D-52. Caps are still available from ARC for the SP-6 although the A version is quite different from the B Version.
rrog
1,958 posts
 
"My old Audio Research D-52B is now considered "End of Life" by the manufacturer."

How does it sound? Audio Research is not the company it used to be now that there are new owners. They are not supporting older models anymore and nobody answers the phone there either. One of the original high end audio companies is gone forever.
philjolet's avatar
philjolet
2,306 posts
 
I used to own a D52 and SP6A with Maggie MG1 speakers

a cap in the 52 went bad within 1 year of buying it new

I always liked the sound of those two together

sorry I can not help you but wanted to share

good luck
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