? for amp techs...

[Steve Hinson]

...So I got an amp here with"twist-lock"filter caps in it, which have a ring on the top of the cap with four posts that are "negative"...

...and a post in the middle top of the cap that is"positive"...

This amp is 40+ years old-I'm leery of turning it on without changing the filter caps...

I can't find any"twist-lock"filter caps...can I use"screw-type"filter caps?

Would I connect the wires soldered to the ring to the"negative" posts of their respective caps, and same with the"positive"?

I've never seen these type caps before-I'm not a tech, but I've recapped many amps...
I'd rather not blow this amp up...

TIA
SH

[Scott Swartz]

Are you referring to these?

https://www.tubesandmore.com/products/c ... 30c112a746

May have to combine some sections to match what you have but should be able to figure out something.

[Steve Hinson]

Are you referring to these?

https://www.tubesandmore.com/products/c ... 30c112a746

May have to combine some sections to match what you have but should be able to figure out something.

Actually,those are all"multi-stage"capacitors...the ones I want to replace are"single-stage"...4000uf at 60vdc...they are no longer made...I have the single stage caps, but they have different terminals on them...2 terminals,as compared to 5 on the originals.
Just trying to figure out how to wire them up...

Thanks
SH

[Bill A. Moore]

As long as you meet the electrical spec, I guess you could use any can that will fit!
https://www.ebay.com/itm/144944022993?e ... R6yr1uGsYg

[Scott Swartz]

The screw type caps (obviously this one is a different value) as in this pic will work fine and they make the clamp to hold them as shown, you would just drill 2 small holes for the clamp, and then make up 2 wire plus eyelet terminals to mount to the screws on the cap.

[Raybob Bowman]

Power it up on a Variac slowly bringing up voltage to 120 will reform old caps.

[Steve Hinson]

The screw type caps (obviously this one is a different value) as in this pic will work fine and they make the clamp to hold them as shown, you would just drill 2 small holes for the clamp, and then make up 2 wire plus eyelet terminals to mount to the screws on the cap.

One of the caps has 3 wires running to it and the other has 5...do I run the"positive"wires to the"+"posts on the screw cap, and the"negative"wires to the"-"post?I figured I could to this with ring terminals.Also,I'm going to have to mount the new ones under the chassis because they won't fit in the holes where the old ones are mounted.

[Scott Swartz]

Yes Steve that would be correct, the outer can on twist locks is the same as the negative terminal on a screw. See the pic with the added white line.

[Scott Swartz]

Yes Steve that would be correct, the outer can on twist locks is the same as the negative terminal on a screw. See the pic with the added white line.

[Steve Hinson]

Yes Steve that would be correct, the outer can on twist locks is the same as the negative terminal on a screw. See the pic with the added white line.

Cool-all I gotta do now is find some horizontal cap clamps-the caps I have won't fit in the chassis holes, so I'm gonna have to mount them underneath and run wires up to the wires inside the chassis-good times!

Thanks,Scott!

SH