Mic Archive
Warm Audio WA-251
Photo: Warm Audio, from its manual, p. 1.

Warm Audio

Warm Audio WA-251

Large-diaphragm tube condenser (12AY7), CK12-style capsule, transformer output, omni, cardioid and figure-8 switched on the power supply

Type
Condenser
Pattern
Omni / cardioid / figure-8
Self-noise
12 dB(A)
Max SPL
132 dB SPL
Impedance
200 Ω
Rated range
20 – 20k Hz

Frequency response

Angle
Distance

Frequency response: from the graph cardioid. Product-page chart without a title or measuring conditions; dB axis labelled -30dB to -60dB with no reference.

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 manual
CapsuleWA-12-B-60V: edge-terminated, dual-backplate, all-brass CK12-style capsule, 6-micron 24k gold-sputtered PET diaphragm. "Custom WA-12-B-60V edge terminated, dual-backplate, all-brass vintage CK12-style capsule"; "the diaphragm is 24k gold sputtered 6 micron, NOS PET film (mylar)", on "a variant CEK-12 back plate" (p. 5).p. 7
Self-noise12 dB(A), IEC 651. "Equivalent Noise: 12dBA (IEC651)".
Max SPL132 dB SPL, < 0.5% THD. "Maximum SPL: 132dB (<0.5% THD)".
Signal-to-noise ratio80 dB, A-weighted. "S/N Ratio: 80dBA".
Dynamic range125 dB, A-weighted. "Dynamic range: 125dBA".
Output impedance200 ohm. "Output Impedance: 200 ohms".
Rated load impedance2000 ohm, minimum. "Rated Load Impedance: ≥2kOhms".
Rated frequency range20 Hz to 20 kHz. "Frequency Range: 20 Hz~20 kHz"; no tolerance given.
Poweringexternal grounded power supply (IEC inlet, 115/230 V selector). "External IEC grounded PSU"; voltage selector near the IEC inlet (p. 6).
Connector7-pin male at the mic base; 7-pin cable to the supply; XLR-3 male output on the supply. Features 6 to 8 (p. 6).p. 6
Dimensions247 × 46 mm. "Mic Dimensions: 247mm x 46mm" (taken as length × diameter).p. 7
Supplied accessoriespower supply; IEC power cable; shock mount; Gotham GAC-7 7-pin cable (5 m); wooden box. "Your WA-251 package includes; the WA-251 microphone, power supply, IEC power cable, shockmount, 7 pin Gotham cable, and wood storage box." (p. 6)p. 6
TubeJJ (Slovak Republic) 12AY7p. 7
TransformerCineMag USA
CableGotham Audio GAC-7, 7-pin, 5 m
CapacitorsPolystyrene coupling capacitors, WIMA film capacitors, Solen (French) output capacitorp. 5
Pattern switch3 positions on the power supply: cardioid, omni, figure-8p. 6
Total weight12 lb (mic, power supply, shock mount, cables)p. 7

Documents

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

Product page on warmaudio.com

Recommended for

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