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Aerovox 610 capacitors, what type are they?

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Posted on July 14, 2017 at 09:47:26

DAK
Audiophile

Posts: 2712
Location: PACIFIC
Joined: August 8, 2010

I just got an amp for pretty cheap that has 4 of them in the power supply and i was wondering if they are electrolytic or PIO. the value of the cap is 4uf x 600vdc about 5" x 1 1/4" . The size would indicate other than electrolytic but i wanted to know for sure. regards.

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Triode_Kingdom

19:16:38 07/14/17

I've struck it rich!!!!!!!!!

DAK

19:30:25 07/14/17

RE: Aerovox 610 capacitors, what type are they?

gusser

10:31:09 07/14/17

...

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Triode_Kingdom

19:16:38 07/14/17

I've struck it rich!!!!!!!!!

DAK

19:30:25 07/14/17

RE: Aerovox 610 capacitors, what type are they?

gusser

10:31:09 07/14/17

RE: Aerovox 610 capacitors, are you sure they are wax?

DAK

15:28:21 07/14/17

OK, those aren't what i was thinking (nt)

gusser

15:51:09 07/14/17

RE: Aerovox 610 capacitors, what type are they?

Steve O

13:30:56 07/14/17

That was my thought when i bought the amp

DAK

15:44:49 07/14/17

RE: Aerovox 610 capacitors, what type are they?, posted on July 14, 2017 at 10:31:09

gusser
Audiophile

Posts: 3649
Location: So. California
Joined: September 6, 2006

Those are probably wax capacitors. They are often found on old lower cost scopes HV power supplies that don't use a second anode CRT at several KV. Like 1960s tube Heath and Eico units. 1200v is a popular value.

yes they should be replaced as they are about as bad as old paper caps

RE: Aerovox 610 capacitors, what type are they?, posted on July 14, 2017 at 13:30:56
Steve O Audiophile Posts: 12364 Location: SE MI Joined: September 6, 2001	FWIW, the 610s I have test fine for both capacitance and leakage. Not sure exactly what's in them but a near exact duplicate by CD (same size/value/voltage) leaks oil when the case is breached. I've always assumed they were PIO caps designed for PS service where something better than electrolytic was desired.

RE: Aerovox 610 capacitors, are you sure they are wax?, posted on July 14, 2017 at 15:28:21
DAK Audiophile Posts: 2712 Location: PACIFIC Joined: August 8, 2010	They are done up in big aluminum cans with 2 axial solder lugs and a big nut for chassis attachment. I just found a post in the "PHilco" forum where this poster says they are PIO and "probably still good". I will test them for capacitance and leakage and see if they are still ok. But, if anyone has definitive info please let me know. regards

That was my thought when i bought the amp, posted on July 14, 2017 at 15:44:49
DAK Audiophile Posts: 2712 Location: PACIFIC Joined: August 8, 2010	The 4uf size is perfect for some tube rectifiers which have relatively small input capacitor values. Thank you for your input.

OK, those aren't what i was thinking (nt), posted on July 14, 2017 at 15:51:09
gusser Audiophile Posts: 3649 Location: So. California Joined: September 6, 2006	.

PIO, posted on July 14, 2017 at 19:16:38

Triode_Kingdom
Audiophile

Posts: 10045
Location: Central Texas
Joined: September 24, 2006

Here's a guy trying to sell them for an insane amount of money...

eBay Aerovox 610

I've struck it rich!!!!!!!!!, posted on July 14, 2017 at 19:30:25
DAK Audiophile Posts: 2712 Location: PACIFIC Joined: August 8, 2010	wooohooo..I knew those caps were special...Nah, just foolin. But, i do like the sound that the PBC imparts to the music, it really adds to the soundstage

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