JW
Well-known member
I did a search but wasn't finding the info I wanted.
Looking for some reccommendations for some film caps for my eq circuit. I'm changing the values for the eq in my PM1000.
The voltage is 50 volts so that rules a few of the films out, that is in the digikey catalog, as some only go down to 100V.
Anyway, as reccomended here before, I might as well put it up again in case someone can use it, but this is from a thread started by tubejay a long time ago.
To change the mid-range and high eq in the Pm1000 circuit:
1kHz to 700Hz by changing .15uf cap to .3uf
2kHz to 1.6 by changing .068 uf to .1uf
4kHz to 3.2 by changing .033 uf to .051
10kHz to 12k (to raise it up a bit) by changing .047uf to .039uf
Anyway, Wima doesn't have these exact values, some close, which I might end up trying.
there's BC MKT, as a possibility. Panasonic PPS, AVX Polyester. Epcos MKT, though again, not those exact values.
I think I'll try and keep them at 63 volts or less.
Anyway, reccomendations? It's going to be a buy a bunch and test them all out situation. I'm just trying to narrow down the choices.
I'm wary now that I bought some Panasonic stacked metal film (V series) and they made my eq pots scratchy. (replaced the originals, and no problem)
Tubejay, if you read this, I know you used MKP caps for your PM1000 eq, but I'm not sure which brand. I see there's Epcos MKP's but the lowest voltage is 160V. In digikey anyway. Hmmm.
Looking for some reccommendations for some film caps for my eq circuit. I'm changing the values for the eq in my PM1000.
The voltage is 50 volts so that rules a few of the films out, that is in the digikey catalog, as some only go down to 100V.
Anyway, as reccomended here before, I might as well put it up again in case someone can use it, but this is from a thread started by tubejay a long time ago.
To change the mid-range and high eq in the Pm1000 circuit:
1kHz to 700Hz by changing .15uf cap to .3uf
2kHz to 1.6 by changing .068 uf to .1uf
4kHz to 3.2 by changing .033 uf to .051
10kHz to 12k (to raise it up a bit) by changing .047uf to .039uf
Anyway, Wima doesn't have these exact values, some close, which I might end up trying.
there's BC MKT, as a possibility. Panasonic PPS, AVX Polyester. Epcos MKT, though again, not those exact values.
I think I'll try and keep them at 63 volts or less.
Anyway, reccomendations? It's going to be a buy a bunch and test them all out situation. I'm just trying to narrow down the choices.
I'm wary now that I bought some Panasonic stacked metal film (V series) and they made my eq pots scratchy. (replaced the originals, and no problem)
Tubejay, if you read this, I know you used MKP caps for your PM1000 eq, but I'm not sure which brand. I see there's Epcos MKP's but the lowest voltage is 160V. In digikey anyway. Hmmm.