Justgotohm
Super Member
Thought I would share this for any current or future Phase Tech PC60 owners.
Capacitors on stock board = capacitors I used.
5uf = 4uf + 1uf Dayton Poly 1%
2uf, 8uf = 10uf Dayton Poly 5%
.1uf = .1uf Dayton Poly 1%
.056 x 2 = .01 Vishay MKP 1837’s
75uf = I tested these out of circuit, they tested within 3% so I left these. To be honest I used whatever caps I currently had in my stash o caps. Pre planned I would have ordered the 75uf and as close to the .056 as I could find. I assumed the .056 are just bipass caps so the Vishays would work fine.
Here’s the thing, before recap the speakers had a lot of lowend for the size, pretty impressive, the mids and highs were good but slightly veiled. After installing all of the above the highs really came alive, vocals are much much better, lots more detail. The lows now seemed muted, before I could have lived without a sub, after you need a sub to keep up. There is really quite a difference. This maybe from a much lower ESR using these particular caps, the slight difference in the bipass cap values? I should have swapped out the 75uf ? I can say this, while the speakers opened up I could have lived with them much easier before the new caps went in. Stock components think little Dynaco A25’s, new caps installed think little Klipsch Heresy’s, both speakers I like for different reasons.
Capacitors on stock board = capacitors I used.
5uf = 4uf + 1uf Dayton Poly 1%
2uf, 8uf = 10uf Dayton Poly 5%
.1uf = .1uf Dayton Poly 1%
.056 x 2 = .01 Vishay MKP 1837’s
75uf = I tested these out of circuit, they tested within 3% so I left these. To be honest I used whatever caps I currently had in my stash o caps. Pre planned I would have ordered the 75uf and as close to the .056 as I could find. I assumed the .056 are just bipass caps so the Vishays would work fine.
Here’s the thing, before recap the speakers had a lot of lowend for the size, pretty impressive, the mids and highs were good but slightly veiled. After installing all of the above the highs really came alive, vocals are much much better, lots more detail. The lows now seemed muted, before I could have lived without a sub, after you need a sub to keep up. There is really quite a difference. This maybe from a much lower ESR using these particular caps, the slight difference in the bipass cap values? I should have swapped out the 75uf ? I can say this, while the speakers opened up I could have lived with them much easier before the new caps went in. Stock components think little Dynaco A25’s, new caps installed think little Klipsch Heresy’s, both speakers I like for different reasons.