Wunder Audio CM7

The Wunder Audio 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 Wunder Audio CM7 Tube Microphone comes with the original large-style U47 transformer that was used in the earlier U47's, including the legendary "Large Badge" U47. These first couple of hundred U47's are very sought after sonically. The CM7 transformer's larger size and high nickel content achieves better low end rolling off at 20 Hz, identical to the original U47 design, instead of 40 Hz. The smaller 40 Hz transformer that was used in later versions of the U47 was made with the 40 Hz roll-off as a requirement for the IRT (German Broadcasting Network). In modern day recording this capability to capture the low end frequencies is essential.


Wunder Audio CM7 Features :

• New Tuchel Connectors are used and are identical to the vintage U47
• Original 'Berlin M7' Microphone Capsule
• Earlier 'Large-Style' U47 Transformer
• 20Hz Low Frequency Roll Off
• Omni & Cardioid Switchable Polar Patterns
• Gold Evaporated Mylar Diaphragm
• Tubes are hand-selected vintage Telefunken EF14, VF14 also an available option
• Historical U47 Shockmount
• New Tuchel Connectors are used and are identical to the vintage U47
• High-end Teflon coated silver wire used for point-to-point internal wiring
• Highly selective array of high-end capacitors, resistors and Mogami audio wire
• Mogami point-to-point internal wiring for the audio path
• External Power Supply Unit offers true precision regulation combined with passive filtering, safer for microphone and capsule
• RF and Transient voltage protected AC input
• Nickel plated spider shock mounts are available
• Oak box with black crushed velvet padded interior is included
• Individual body parts can be sold separately as replacement parts for a vintage U47

The Wunder Audio CM7 now offers an M7 capsule skinned in Germany by an ex-Neumann employee. You can can choose a 40-50 year old M7 capsule that is newly re-skinned to original spec. Another option is an early M7 with its original diaphragm. This is, however, not recommended as the 50 year old PVC has hardened and would not sound as it did when it left the factory. But with that said, we have matched the sound of one customers old completely stock "Large badge" U47 from 1950. We can also offer new or re-skinned KK47 capsules

The problem with a vintage U47 is that the old transformer wire used PVC insulation. This insulation cracks over the years and depending on where, you can loose high or low frequency response. If the mic was stored in high humidity the PVC would of lifted up, bubbled, then cracked while drying out. If the mic were stored too dry the wire would simply have cracked

The Point-to-Point Hook-up wire in an old U47 was also coated with PVC and is usually full of cracks. We use high-end Silver wire to wire up the entire mic.

Package includes: CM7, Plush Oak Box, Historical Shock Mount, Historical Power supply, Original large Tuchel connected mic cable.
Comes standard with the M7 capsule. (Swivel mount shown in photo is not included but can be special ordered.)