G.R.A.S. 12HF 1-Channel Power Module for Lownoise Systems

Connection: Traditional 200 V
Channel(s): 1

The 12HF provides:

  • polarization voltage (200 V) for the condenser microphone
  • voltage supplies (±15 V) for powering the microphone preamplifier
  • a front panel switch response for selecting pressure or free field setting
CONDITIONING .
Frequency response (±0.2 dB) Hz 2 to 20 k
Output channel(s) 1
Output impedance Ω 30
Type Traditional power supply (LEMO)
Input channel(s), traditional power supply 1
Preamplifier supply V +-15
Polarization voltage V 200
Overload indication Yes
POWER AMPLIFIER .
Power supply, battery 4 x LR14 (C)
Power supply, external Vdc 6 to 20
Battery low indication Yes
Fuse mA 315 (fast)
Weight g / oz 620 / 21,870