Microphone preamplifier 500 series for compatibility with API racks and other 500 series.
Features:
- Gain 0-66dB with 48V phantom power and phase inversion.
- Direct instrument input with gain 0-30dB (balanced or unbalanced).
- Blend control for mixing microphone and DI signals.
- Vari-phase function continuously adjusts the phase of the direct signal.
- Silk function for enhanced sound.
- Opto-compressor module with continuously variable threshold control (2:1 ratio, fixed attack and release).
- LEDs for signal, clipping, and compression indication.
Frequency Range: Main Output, no load, -0.2dB at 10Hz, -3dB at 160kHz.
Noise: Measured at Main Output, unweighted, 22Hz-22kHz, Terminated 150 Ohms.
- With unit gain better than -100dBu.
- With 66dB gain better than -62 dBu.
- Equivalent Input Noise better than -128dBu.
- Noise Factor 1.5dB.
Maximum Output Level: Maximum output from 20Hz-40kHz is +23 dBu.
Total Harmonic Distortion + Noise: at 1kHz, +20 dBu output: Main Output: Better than 0.001% at 20Hz, +20 dBu output: Main Output: Better than 0.002%.
Silk Engaged: Better than 0.2% second harmonic.
Crosstalk: Measured channel to channel: Better than -90dB at 15kHz.
Phantom Power: +48 Volts DC ±1%.
