Josephson Engineering C700A Variable Pattern Condenser Microphone

Series Seven microphones provide unprecedented flexibility, as the directional pattern of the mic can be adjusted in use, during or after recording. C700 microphones include omni/pressure and figure-8/gradient capsules, each with a discrete output. The signals can be recorded on separate tracks, so the pattern can be selected in mixdown. Pattern control is only one advantage of this technique.

Applying different equalization or dynamic control to the capsule signals makes entirely different mic characteristics – for instance the warmth of a gradient mic used close up for vocals might be combined with the transparency of a pressure mic in the highs, by rolling off the high frequencies in the gradient signal and the lows in the pressure signal before they are combined.

The C700A (shown) includes two capsules in one housing, a 16mm omni element similar to the KA11 capsule in the Series Six, and a 26mm figure-8 capsule. Completely neutral electronics, using the same cascode FET input, class-A active balanced output circuit found in the Series Six, are provided for each signal. Any directional pattern from omni to figure-8 may be selected by controlling the ratio of pressure to gradient signals.

• Pressure and pressure gradient condenser microphone transducers
• Variable directional pattern achieved by mixing output signals (see over)
• Frequency range 20-20,000 Hz ±2 dB from reference curve
• Sensitivity –41 dB ref 1 V/Pa (9 mV/Pa) for each signal
• Overload sound pressure 135 dB SPL at 1kΩ load for <1% THD
• Equivalent noise level 15 dB SPL, A-weighted
• Power supply P48 phantom, 4 mA per output
• Diameter 63mm (100 mm wide at yoke), length 328 mm
• Output connector 5-pin XLR type