X-W Specification

The X-W was discontinued in 2011.

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 or bloodwood, provides an increase in on-axis high frequency response which enhances the directional response of the X-W. The X-W’s 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 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.

The X-W is intended for use on all acoustic instruments and ensembles. 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.

X-W Specification

Type: 6mm omnidirectional 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: 20Hz 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)