retrogradeorbit
Member
Hi there,
I want to connect a double sided K47 style condenser microphone capsule onto a mic preamp circuit designed for a single sided capsule. I'm thinking of using a km84 circuit. Am I right in thinking that if I wire the back diaphragm to the same point as the front diaphragm I get an omni pickup, and if I connect the back diaphragm to the central backplate I get a cardioid pickup pattern?
Is it better to leave the back diaphragm totally unconnected for cardioid? What's the difference between unconnected, and connected to the the central backplate?
Is it possible to put a switch on that line to switch omni to cardioid? What considerations are there for that switch considering the very high impedance circuit at that point?
I'm new to this idea of building a microphone. Interested in whether I'm on the right approach.
Regards
Crispin
I want to connect a double sided K47 style condenser microphone capsule onto a mic preamp circuit designed for a single sided capsule. I'm thinking of using a km84 circuit. Am I right in thinking that if I wire the back diaphragm to the same point as the front diaphragm I get an omni pickup, and if I connect the back diaphragm to the central backplate I get a cardioid pickup pattern?
Is it better to leave the back diaphragm totally unconnected for cardioid? What's the difference between unconnected, and connected to the the central backplate?
Is it possible to put a switch on that line to switch omni to cardioid? What considerations are there for that switch considering the very high impedance circuit at that point?
I'm new to this idea of building a microphone. Interested in whether I'm on the right approach.
Regards
Crispin