A Look Inside
A Slovak Republic JJ 12AY7 vacuum tube is used in the WA-251. We auditioned 3 tube brands and fell in love with the JJ 12AY7. The frequency response of the JJ tube, and the way it contributes to the circuit is tonally smooth and vintage in nature.
All Brass Capsule
The WA-12-B-60V is an all-brass, edge-terminated capsule that captures all the smoothness, rich top end, and warm vintage sonics of the original CK12 capsule. The WA-12-B-60V uses a variant CEK-12 back plate as a basis, which overcomes manufacturing limitations of the original CK12 capsule. The o-ring and housing of the WA-12-B-60V are all made from brass (no teflon parts), and the diaphragm is 24k gold sputtered 6 micron, NOS PET film (mylar). The end result is a very consistent, reliable capsule which matches the frequency response and tonality of the classic 1970’s classic capsule.
The WA-251 utilizes an American made CineMag USA transformer. This transformer helps provide the present top end and the LARGE bottom end one would hope to get from a 251-style condenser microphone.
The WA-251 proudly uses polystyrene coupling capacitors, wima film capacitors throughout, and an imported Solen French capacitor on its output.
One component of a tube microphone that is often overlooked is the 7 pin cable that connects the microphone to its power supply. When auditioning the WA-251 and other tube microphones we learned quite a bit about 7 pin cables and how the shielding and wire gauge size can drastically change the sonics of a tube microphone. We have partnered with Gotham Audio in Switzerland to use their very carefully built high-end 7 pin “GAC-7 cable”. Using this cable increases top end presence and the overall size of the recorded image in the stereo field by reducing phase shift and the parasitic effect often experienced in poorly built cables. Gotham Cabling is very expensive and boutique in nature and shouldn’t be considered a small addition to the WA-251 package.
- CUSTOM WA-12-B-60V EDGE TERMINATED, DUAL-BACKPLATE,
ALL-BRASS VINTAGE CK12-STYLE CAPSULE
- CINEMAG USA OUTPUT TRANSFORMER
- JJ SLOVAK 12AY7 VACUUM TUBE
- GOTHAM 5 METER GAC-7, 7-PIN TUBE MICROPHONE CABLE
- WIMA, SOLEN FRENCH, AND POLYSTYRENE CAPACITORS
- POLAR PATTERNS: 3 PATTERNS – CARDIOID, OMNI, FIGURE-OF-EIGHT
- FREQUENCY RANGE: 20 HZ~20 KHZ
- OUTPUT IMPEDANCE: 200 OHMS
- MAXIMUM SPL: 132DB (<0.5% THD)
- RATED LOAD IMPEDANCE: ≥2KOHMS
- S/N RATIO: 80DBA
- EQUIVALENT NOISE: 12DBA (IEC651)
- EXTERNAL IEC GROUNDED PSU
- TOTAL WEIGHT (MIC, PSU, SHOCKMOUNT, CABLES) – 12 LBS
- MIC DIMENSIONS: 247MM X 46MM
- DYNAMIC RANGE: 125DBA
- INCLUDES: MICROPHONE, WOOD BOX, PSU, SHOCK-MOUNT AND GOTHAM CABLE.
Cardioid Frequency Chart
Figure 8 Frequency Chart
Omni-Directional Frequency Chart
“We were in the studio recording the new Fitz And The Tantrums album and we did a blind taste test between this and a $10,000 mic, we literally couldn’t even tell the difference…we were all floored by the quality.”
“I just got the WA-251. OMG! This is so awesome! I am putting it up against killer mics and nothing is better and probably not as good. It kills my AKG C12 and it’s a great one.”
“The WA-251 has that creamy low-mid range anyone seeking this type of microphone is looking for as well as the crisp clear highs that make it so useful on vocals & guitars.”
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