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Studio Projects C3 (797)

Pricing & Availability

  • MSRP: $599


C3 (797) Documentation

OmnidirectionalCardioidBidirectionalStudio Projects C3 (797)

Multi-Pattern Condenser Microphone

The original Studio Projects / 797 Audio C3 is a multipattern condenser microphone. The circuit is based on the Schoeps transformerless design. The capsule is based on Neuman’s K67. The combination of a brightly voiced capsule with a linear circuit creates the sonic profile that has since become commonplace for microphones imported from China.

C3 (797) PCBThe C3 was better built than many of the internally similar microphones that followed it. It has a 34mm capsule that is a much better copy of the K67 than most of the Chinese-made microphones (which use 32mm capsules). The JFETs were manually biased during assembly, to ensure maximum headroom. Component quality is generally high.

The mic was introduced at $599 in 2000, and subsequently redesigned around 2006. The following table describes the differences between the two models:

Original C3 (2000)Revised C3 (2006)
Branding:Studio Projects / 797 AudioRed SP badge
1. Pattern (O/8/C)
2. Pad or Filter
1. Pattern (O/8/C)
2. Pad (-10, Off, -20)
3. Filter (75Hz/Off/150Hz)
XLR housing:OffsetCentered
Input cap:Ceramic DiscPolystyrene

Permalink: Studio Projects C3-original

The mic was released in 2000.


Pickup Patterns Pads & Filters
Omnidirectional (12 mV/Pa; 40 - 20,000 Hz)
Cardioid (12 mV/Pa; 40 - 20,000 Hz)
Bidirectional (12 mV/Pa; 40 - 20,000 Hz)
  • Pad: -10dB (Via Switch)
  • Filter: HPF: -6dB/octave @ 150Hz (Via Switch)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 26.9mm
Capsule diameter: 34.1mm
Diaphragm gauge: 6 microns
200 Ohms (Low) Max SPL: 146 dB
Self-noise: 18.0 dB(A)
Weight Length Max Diameter Interface(s)
640g (22.58oz) 222mm (8.74'') 52mm (2.05'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power

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