Description
Microphone Input Transformer VTX-MIC2
1 CT : 2+2 150(Ω) 0dBu PCB mounting
Microphone Input Transformer VTXMIC2 – designed specifically for impedance matching with the pre-amplifier stage
- for mic pre-amp input circuits to match microphones to pre-amp
- fortube microphones for matching high impedance tube circuits to normal output impedance
- for ribbon microphones to transform very low voltage, very low impedance ribbon motors to normal microphone output levels
Transformer Data Sheet – Click to open and DOWNLOAD
Microphone Input Transformer VTXMIC2
- Microphone input transformer
Input impedance: 150 Ω
Input -1dBu max. (@ 20Hz) <1%THD
Frequency response +/-0.2dB (20Hz – 50kHz)
Hi-pot, primary to secondaries: 500VDC
Windings to screens+can: 500VDC - Fitted with multiple electrostatic screens
Low distortion Mu-metal core
Mu-metal screening can reduces electrical noise by up to 30dB
Operating temperature range: 0 to +70 C
Storage temperature range: -25 C to +120 C
Mass = 0.055kg
Electrical characteristics
Specification (test circuit 1):
Turns ratio: 1 to 4 C.T. (series)
DC resistance (Ω+/-15%)
Primary (8 – 5): 19
Secondary (1 – 4): 292
Input impedance (Ω): 1.5kW (typ.) @ 1kHz
Output impedance (Ω): 2.95kW (typ.) @ 1kHz
Voltage gain @ 1kHz, 10.9dBu (typ.)
Maximum input @ 20Hz, <1% THD: -1dBu
Insertion loss: 0.2dB (typ.)
Leakage inductance @ 1kHz: (8 – 5) (1/2/3/4 S/C) 12mH (typ.)
Capacitance @ 10kHz, 0.1V:
Cp-s: 85pF (typ.) or 7pF (typ.) with screen earthed
Cp-scr: 150pF (typ.)
Cs-scr: 170pF (typ.)
Specification (test circuit 2):
Turns ratio: 1 to 2 (parallel wired)
DC resistance (Ω+/-15%)
Primary (8 – 5): 19
Secondary (parallel) ((1+2) – (3+4)): 144
Input impedance (Ω): 1.5kΩ (typ.) @ 1kHz
Output impedance (Ω): 737Ω (typ.) @ 1kHz
Voltage gain @ 1kHz, 4.9dBu (typ.)
Maximum input @ 20Hz, <1% THD: -1dBu
Insertion loss: 0.3dB (typ.)
Leakage inductance @ 1kHz: (8 – 5) (1/2/3/4 S/C) 3mH (typ.)
Capacitance @ 10kHz, 0.1V:
Cp-s: 85pF (typ.) or 7pF (typ.) with screen earthed
Cp-scr: 150pF (typ.)
Cs-scr: 170pF (typ.)
