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For his latest creation, David is taking design cues from the Sony 37-A. Built from the late 1950s into the 1960s, the Sony C-37A is known for its high headroom and darker tone. It also allows engineers to switch the mic from directional to non-directional via a screwdriver on the back.
The list of avowed users of the Sony C-37A runs extremely deep in the decades since the microphone's first release. From historic studios like Sunset Sound and legendary voice actor Mel Blanc to superstar producer Daniel Lanois and artists like Bon Iver, everyone loves the C-37A.
"Sony took a completely different approach than Neumann and AKG, which made the C-37a a completely different animal," says David Royer.
For the Mojave Audio MA-37, David is employing an EF86 tube, Lundahl transformer and a special capsule built in California. The MA-37 utilizes a similar mechanical approach as the original Sony microphone with an adjustable tuned acoustic chamber. Whether you want to use the mic's cardioid or omnidirectional polar patterns is completely up to you.
Capsule Type: Single diaphragm
Polar Pattern: Choice of a cardioid or omni via mechanical shutter
Frequency Response: 30 to 18,000 Hz +3 dB ("M" Setting)
Sensitivity: 46 dBv referred to 1 volt per pa.
Maximum SPL: <134 dBSPL
Distortion: Not to exceed .5 percent at 134 dB
Self Noise: Better than 18 dB
Bass Cut:M flat
V1 -6dB at 40 Hz.
V2 -6dB at 100 Hz.
Impedance: 170 ohms, floating.
Recommended load 1500 ohms or higher