Single channel mic circuit. An impedance converter using a high performance operational amplifier, single channel. Please see the "datasheet" links for connection information.
OPABoardsREV_1.pdfFET-LessREV2.pdfFull CondenserRev3.pdfDual Condenser_Rev2.pdfTroubleshootingOPA-Alice MicRev1.pdfSingle channel mic circuit. An impedance converter using a high performance operational amplifier, single channel. Please see the "datasheet" links for connection information.
I highly recommend the OPA Alice board.
I took apart a mackie em91 and replaced it with this pcb and a differerent capsule. the difference is night and day! mackie claimed to be a "large diaphram capsule,it was only 14mm ... disappointed with the deception.
