paulrichards7
Well-known member
- Joined
- Jun 10, 2008
- Messages
- 68
So I came across these words of wisdom for Jim Williams:
Another problem with leaving in older caps is for one they are usually too small in value. Designers typically use the smallest and cheapest parts they can so low end roll off are set to 20 hz or so. That will create phase shift beginning at 200 hz.
To remove it, roll-offs must be set to 2 hz so the phase shift begins at 20 hz or lower = not audible. Soundcrafts and others have that problem as they use 47 uf/25v caps everywhere, the use of 220uf caps does wonders. Those are still quite cheap, a 1000 piece bag of Panasonic FM 220 uf 25 v caps costs only $80. That's 8 cents each. There is no reason to buy lesser caps when these are so cheap.
and wondered how they might apply to the caps on the audio path of my mixer channel
http://i390.photobucket.com/albums/oo345/paulrichards7/audio-path-caps.jpg
They have different capacitance and voltages and wondered if this is specific to that design or due to Studiomaster pricing
Thanks
Paul
Another problem with leaving in older caps is for one they are usually too small in value. Designers typically use the smallest and cheapest parts they can so low end roll off are set to 20 hz or so. That will create phase shift beginning at 200 hz.
To remove it, roll-offs must be set to 2 hz so the phase shift begins at 20 hz or lower = not audible. Soundcrafts and others have that problem as they use 47 uf/25v caps everywhere, the use of 220uf caps does wonders. Those are still quite cheap, a 1000 piece bag of Panasonic FM 220 uf 25 v caps costs only $80. That's 8 cents each. There is no reason to buy lesser caps when these are so cheap.
and wondered how they might apply to the caps on the audio path of my mixer channel
http://i390.photobucket.com/albums/oo345/paulrichards7/audio-path-caps.jpg
They have different capacitance and voltages and wondered if this is specific to that design or due to Studiomaster pricing
Thanks
Paul