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The CM7 is a historically-accurate reproduction of the early long-body Neumann U-47. Like the original, the CM7 has an M7 capsule and the full-sized U-47 transformer, and offers Cardioid and Omnidirectional pickup patterns.
The mic’s capsule is described as a “Berlin M7,” and differs from the better-known Gefell M7 capsule in a a few respects, including the way in which the backplates and rims are machined, and perhaps more significantly in the use of 6-micron Mylar rather than 10-micron PVC for the diaphragm material.
The mic’s transformer is a BV8 reproduction from renowned transformer supplier AMI/Tab-Funkerwerk, headed by ex-Telefunken technician Oliver Archut.
The tube is an EF14, which is physically identical to the tube originally used by Neumann in the U-47, the VF14, but was designed to operate at a different voltage. The use of EF14s in U-47 repairs and reproductions is common; the EF14 is arguably as close as can be gotten to the original, and some would say the sound is identical.
The CM7 includes a padded oak storage box (embossed with the Wunder logo), a historical-reproduction elastic shockmount, reproduction power supply, and reproduction Tuchel cable.
The Wunder Audio CM7 is also known as: CM-7.
• Pickup Patterns: Omnidirectional (20 - 20,000 Hz) - Cardioid (20 - 20,000 Hz)
• Capsule Dimensions : Diaphragm diameter: 26mm - Diaphragm gauge: 6 microns
• Length: 248mm (9.76'')
• Max Diameter: 57mm (2.24'')