clepsydrae
Active member
- Joined
- Apr 19, 2014
- Messages
- 44
Hi -- I'm building am electret instrument mic from the DIYgenericIntFET zapnspark circuit from the micbuilders yahoo group.
(I'm told it's a schoeps-style circuit; it's running off P48 and it runs a 3-wire JFET-containing capsule in (i believe) "phase-splitter" mode to generate a balanced output.)
I intend to have the electret capsule some distance from the circuit (ideally up to 10 feet, but I could live with 5) connected via shielded balanced cable through a mini phone jack. Assuming this is realistic, I think I may be smart to use low-capacitance cable. True?
I can find appropriate-seeming cables but the specs give conductor-to-conductor capacitance that are very low (10-20 pF/ft) and conductor-to-shield values that are much higher (54-92).
Which value should I go off of? How low should I be aiming for? Or don't worry about it at all?
Much obliged for any ideas!
(I'm told it's a schoeps-style circuit; it's running off P48 and it runs a 3-wire JFET-containing capsule in (i believe) "phase-splitter" mode to generate a balanced output.)
I intend to have the electret capsule some distance from the circuit (ideally up to 10 feet, but I could live with 5) connected via shielded balanced cable through a mini phone jack. Assuming this is realistic, I think I may be smart to use low-capacitance cable. True?
I can find appropriate-seeming cables but the specs give conductor-to-conductor capacitance that are very low (10-20 pF/ft) and conductor-to-shield values that are much higher (54-92).
Which value should I go off of? How low should I be aiming for? Or don't worry about it at all?
Much obliged for any ideas!
