2. amps-preamps
  3. 177125-30003

Audio Research D400 mk2 Caps

Hello,

Anyone know where  to get the 4 big can Caps?

67,000 mfd 75 volts I think. I cant tell size though.

Audio Research does not repair this amp anymore.

George Meyer could not find them either.

I could replace them in my own time but can't find them.

The amp is running fine but I want them replaced.

The volts measure ok but if left off for.more than a week or so it may zap after charging up.

Protect mode blinks for a second

 

But stays on ok and sounds Grest.

 

Thanks George.

gasjr
petg60
1,486 posts
 

You can also check Nippon Chemicon KMH series, and Frolyt (Germany) EBH-NV.

Both screw terminals but size may be different.

 

petg60
1,486 posts
 

I would also ask ARC, just in case, to provide me with data of the capacitors used back then or any other information.

But i assume that anything made now days would be superior.

gs5556
1,242 posts
 

Audio Research gear is a pain to work on, everything is tight. What is the lead spacing between the cap terminal screws? How tall is the cap? You don't have to use exactly 67kuF.

dekay's avatar
dekay
5,716 posts
 

 

 

DeKay

atlvalet
55 posts
 

Bumping this because Pyramid Audio serviced my "unserviceable" D400mkii.

Issue is those original caps are direct soldered to the board, which makes it a PITA to work on.

The tech at Pyramid Audio in Austin found a solution. He should have records of what he used if you give them a call. I know a bunch of his peers warned him off working on the amp, but he did it anyway and I'm happy because this amp sounds fantastic.

More to discover