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12AX 4-Channel CCP Power Module with Gain
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12AX 4-Channel CCP Power Module with Gain
The GRAS 12AX CCP (Constant Current Power) Supply is a low-noise 4-channel power supply for CCP microphone sets.
The GRAS 12AX is a constant current power module for powering 4 CCP preamplifiers/microphone sets.
It is optimized for integration into a production environment. The anodized enclosure is sturdy and offers good protection against dirt, dust, and moisture.
Key Specifications
| Frequency response (+1,-3 dB) @ Gain = 0 dB | 1 Hz to 300 kHz |
| Frequency response (+1,-3 dB) @ Gain = 20 dB | 1 Hz to 200 kHz |
| Frequency response (+1,-3 dB) @ Gain = 40 dB | 1 Hz to 70 kHz |
| Output channel(s) | 4 |
| Output impedance | 75 Ω |
| Direct coupling input to output | No |
| Inherent noise (20 to 20 kHz) @ Gain = 0 dB | 1.5 µVrms |
| Inherent noise (20 to 20 kHz) @ Gain = 20 dB | 15 µVrms |
| Inherent noise (20 to 20 kHz) @ Gain = 40 dB | 150 µVrms |
| Gain settings, 20 dB steps | 0, 20 and 40 dB |
| Gain error | ± 0.15 dB |
| Linear mode | Yes |
| Type | Constant Current Power (CCP) |
| Input channel, CCP | 4 |
| CCP preamplifier supply @ +28 V | 5 mA |
| Overload indication | Yes |
| PC controlable | No |
| External filter option | No |
| Power amplifier overload detection | No |
| Power supply, external | 9 to18 Vdc |
| Battery low indication | No |
| Temperature range, operation | -10 to +50 °C / 14 to 122 °F |
| Weight | 1100 g / 38.8 oz |
Specifications from the official GRAS product sheet. Please refer to the attached datasheet for full details.
