dual VCA for the 21sr century(2164)-finding 560pF poly caps?

tokyomatik

Hi Matthias!
I etched one of this boards using your design
and I have problems finding 560pF in polystyrene
my better options are by Banzai Music with these:

http://www.banzaimusic.com/MuRata-560pF-1kV.html
http://www.banzaimusic.com/MuRata-560pF-2kV.html
http://www.banzaimusic.com/Silver-Mica-560pF-100V.html
http://www.banzaimusic.com/Panasonic-ECQ-P-560pF.html

wich one could fit better this project??

tokyomatik · Posted: Mon Apr 20, 2015 4:30 pm Post subject:

,,,also I saw on the documentation that on your board you replaced all the 10pF & 100pF caps from the original schematics with 10nF, do you recomend to use this value?

pmsr · Joined: Jun 15, 2013 Posts: 2 Location: Gothenburg, Sweden

Don't know the circuit but know the parts and can imagine why they were chosen. It's this one: http://www.banzaimusic.com/Styroflex-560pF.html . Styroflex is polystyrene. A silver mica would be a good replacement with no compromise at all, but it's more expensive.

/Pedro

tokyomatik · Posted: Tue Jun 02, 2015 3:23 pm Post subject:

i already finished to assemble this module using styroflex caps, but since i always need more vcas i'm gonna make another one using normal ceramics caps and then i can compare them

pmsr · Joined: Jun 15, 2013 Posts: 2 Location: Gothenburg, Sweden

Great. Was browsing the forum, saw the thread and decided to answer. Ok, think I found the circuit. Curious if you are using original ssm2164 parts or the cool audio clone? Your next best (and cheaper) choice for capacitors would be polypropylene, btw. Ceramic is really not advised on those locations.

/Pedro