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Josephson C42
Photo: Josephson Engineering, from its spec sheet, p. 1.

Josephson Engineering

Josephson C42

Small-diaphragm cardioid condenser, transformerless discrete class-A output; stainless steel body

Type
Condenser
Pattern
Cardioid
Sensitivity
−41.4 dBV/Pa computed
Self-noise
21 dB(A)
Max SPL
135 dB SPL
Impedance
50 Ω
Rated range
40 – 20k Hz

Frequency response

Angle
Distance

Frequency response: from the spec sheet, p. 1. Untitled graph on the data sheet, relative dB, 2 dB per division, 40 Hz to 20 kHz labelled; the specs give the response "at 60 cm" as "40-20,000 Hz ±2 dB from curve", so this is taken as the curve at 60 cm. Room, smoothing and whether it is typical are not stated.

Dashed: outside the rated range, or simulated (other angles and distances). Hover or tap the graphs for values.

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All specs

From the spec sheet
Sensitivity−41.4 dBV/Pa (8.5 mV/Pa). Not stated by the manufacturer: Stated as "Output Level, mV/Pa 8.5"; converted: 20·log10(0.0085) = -41.4.p. 1
Self-noise21 dB(A), at most. "Equivalent Noise Level, A-weighted ≤21 dB".
Max SPL135 dB SPL, with P48 power. "Maximum SPL (with P48 power) 135 dB"; it works from 24 V phantom "with some limitation in maximum SPL".
Output impedance50 ohm. "50Ω (recommended load ≥1KΩ)".
Rated load impedance1000 ohm, recommended minimum. "recommended load ≥1KΩ".
Rated frequency range40 Hz to 20 kHz, ±2 dB from curve, at 60 cm. "Frequency Response (at 60 cm) 40-20,000 Hz ±2 dB from curve".
Poweringphantom 48 V (works from 24 V). "P48 phantom power, 4.5 mA"; "it will function with phantom power as low as 24 volts".
Current draw4.5 mA
ConnectorXLR-3 male (pin 2 hot). "3 pin XLR type, pin 2 positive polarity".
Weight80 g. "80 grams (< 3 ounces)".
Dimensions98 × 21 mm. Length x diameter: "21mm diameter, 98mm long".
Finishsatin machined stainless steel (the C42MP pair: matte black chrome)
ElectronicsA selected discrete FET driving a fully balanced symmetrical transformerless discrete class-A output stage; low enough output impedance for very long cable runs
Temperature range-10 to +50 °C
Stereo kitC42MP: a matched pair of C42s in matte black chrome with a hard shell case
Applications (Josephson)Spot miking acoustic and amplified instruments, drums and drum overheads, ensemble and choir, concert recording, sound effects and vocals

Documents

Copies kept by Mic Archive, because manufacturers move and drop their documents. Each is © Josephson Engineering, unchanged, with its original address.

Product page on josephson.comRecording Hacks

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