recordinghacks

Studio Projects C4

Detachable-Capsule Pencil Condenser Microphone

Studio Projects’ C4 is a detachable-capsule pencil mic built by 797 Audio in China. The C4 is sold only as a matched pair.

Each mic has two three-way switches built into the body. The first is a three-position pad, offering 0dB, -10dB, and -20dB options. The second is a high-pass filter, offering a 6dB/octave cut at either 75Hz or 150Hz.

Like most of the mics in the Studio Projects line, the C4 was redesigned in 2006 by Brent Casey of PMI Audio. According to Casey, the revised C4 has a new amplifier circuit designed for high headroom; the mic’s circuit can withstand 139 dB SPL with no pad, or 159 dB SPL with the optional non-capacitive pad engaged.

The new version also has higher sensitivity and 2dB lower noise (from 18dBA to 16dBA). Finally, a hypercardioid capsule was introduced.

The C4 kit includes a matched pair of head amps, two omni capsules, two cardioid capsules, two mic clips (p/n C4SC), two foam windscreens, a stereo mounting bar (p/n SPSB), and a hard-shell carrying case.

The Studio Projects C4 is also known as: C-4.

The mic was released in 2003.

Specifications

Compatible Capsules
Studio Projects CC1 Cardioid capsule Sensitivity: 11 mV/Pa CHARTFreq. Resp.: 40 - 20,000 Hz MSRP: n/a | Still In Production Studio Projects HC1 Hypercardioid capsule Sensitivity: 11 mV/Pa Freq. Resp.: 40 - 20,000 Hz MSRP: n/a | Still In Production Studio Projects OC1 Omnidirectional capsule Sensitivity: 11 mV/Pa CHARTFreq. Resp.: 40 - 20,000 Hz MSRP: n/a | Still In Production

Pads & Filters	Impedance	SPL/Noise
Pad: -10dB (Via Switch) Filter: HPF: -6dB/octave @ 75Hz (Via Switch) Filter: HPF: -6dB/octave @ 150Hz (Via Switch)	200 Ohms (Low)	Max SPL: 158 dB Self-noise: 16.0 dB(A)

Weight	Length	Max Diameter	Interface(s)
92g (3.25oz)	125mm (4.92'')	20mm (0.79'')	3-pin XLR male (1)

Power Specifications
Requires phantom power Phantom voltage: 48 ± 4v

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