Using the X-W
The X-W was discontinued in February 2011.
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The X-W is an electret condenser microphone that uses a 6mm omnidirectional capsule with a 36mm pressure waveplate attached to the capsule mount. The waveplate, fabricated from instrument-grade ebony, provides an increase in on-axis high frequency response which enhances the directional response of the X-W. The X-W's transformer-balanced circuit incorporates equalization to restore the X-W's on-axis response to nearly flat, with a 2dB presence peak centered at 6kHz. The X-W thus has improved on-axis signal-to-noise ratio due to the acoustic gain of the waveplate.
The X-W is a pressure microphone with a free-field response; that is, it has a nearly flat frequency response on-axis with a falling high-frequency response off-axis. The 90 degree off-axis response of the X-W is approximately 7dB less than the on-axis response at 20kHz. The X-W exhibits practically no off-axis rolloff below 3kHz.
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The X-W has a rich, detailed sound, and is intended for general use on all acoustic instruments and ensembles (for very loud sources, the X-M should be selected instead).
The X-W is excellent for stereo recording. Pairs of X-Ws are matched to
within 0.3dB A-weighted sensitivity and very close frequency response
as well. The X-W may also be purchased in matched trios for spaced
microphone arrays.
The X-W is designed to work with low voltage and low current power supplies as well as standard phantom power. The X-W requires a phantom power supply of +9V to +48V.
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X-W Specification
Type: 6mm omnidirectional transformer-balanced electret condenser microphone with pressure waveplate
Phantom Power: +9V to +48V required
Current: 1.2mA
Output Impedance: 150Ω
Recommended Input Impedance: 600Ω minimum
Sensitivity, 1kHz @ 94dBSPL: -30dBV/Pa
Total Harmonic Distortion, 1kHz @ 94dBSPL: 0.1% typical
Maximum Level, 1kHz @ 1% THD: 118dBSPL
Frequency Response: 30Hz to 20kHz
Polar Response, 90°: -3dB @ 3kHz to -7dB @ 20kHz
Polar Response, 180°: -3dB @ 3kHz to -11dB @ 20kHz
Self-Noise: 19dBA
Weight: 2.8oz (79g)
Dimensions: 4 5/8" x 3/4"ø (117mm x 19mmø)
Waveplate Dimensions: 1/4" x 1 7/16"ø (6mm x 36mmø)
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