Mic Archive
Earthworks QTC1
Photo: Earthworks, from its spec sheet, p. 1.

Earthworks

Earthworks QTC1

Small-diaphragm omni, measurement-style tapered body, phantom powered; 4 Hz to 40 kHz ±1 dB

Type
Condenser
Pattern
Omni
Sensitivity
−30.5 dBV/Pa
Self-noise
22 dB(A)
Max SPL
142 dB SPL
Rated range
4 – 40k Hz

Frequency response

Angle
Distance

Frequency response: from the spec sheet, p. 1. "QTC1 Frequency Response", on axis; relative dB, 0 dB as printed. Distance, room and smoothing not stated. The line is the "Typical response"; the grey band is the "Normal production range".

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−30.5 dBV/Pa (30 mV/Pa). "30 mV/Pa (-30.5 dBV/Pa)".p. 1
Self-noise22 dB(A). "22dB SPL equivalent (A weighted)".
Max SPL142 dB SPL, 5 kohm load. "142 db SPL with 5K ohm load".
Rated load impedance600 ohm, minimum, at pin 2 and pin 3. "Min output load: 600 ohms at pin 2 and pin 3".
Rated frequency range4 Hz to 40 kHz, ±1 dB, on axis. "Frequency response on axis: ±1dB 4Hz to 40kHz".
Poweringphantom 48 V. "48V Phantom, 10mA".
Current draw10 mA
ConnectorXLR, balanced (pin 2 +). "XLR intended to drive a balanced input (Pin 2+)".
Weight225 g. "225g (.5 lb)".
Dimensions229 × 22 mm. "Dimensions (L x D): 229mm x 22mm (9 x .860 inches)": length, diameter.
Peak output voltage3 V into 1 kohm, 10 V into 5 kohm
FlatnessTypically within ±0.5 dB from 20 Hz to 20 kHz
NameQTC: "quiet time coherent"
Applications (Earthworks)Ambient miking, and close miking of quiet or delicate sources: percussion, piano, guitar, upright bass, strings, vocals, brass, woodwinds; location recording; Foley, ADR, sound effects, sampling

Documents

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

Recommended for

Instruments whose sources name this mic, or an earlier version or variant of it.

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