3. Pull the grille off in upwards direction.
4. Remove the small screw that is located several inches below the
Wunder Audio diamond badge.
5. Pull the complete body shell off in an upwards direction.
6. Remove the black rubber donut shaped dampener by pulling
downwards off the tube.
7. Remove the vacuum tube by grasping the black rubber shock-mount
in one hand and the tube in the other hand – wiggle the tube to free it
with a forward motion.
Holding the tube socket in one hand and the
tube itself in the other hand will help you separate the vacuum tube
from the socket.
8. Installing a new tube is simply the reverse order of these steps.
Operation
The CM7 is equipped with a 6-pin Tuchel connector that plugs into the
base of the microphone and screwed finger tight.
Always make sure that the PSU is switched off when plugging the mic
connector into the mic and PSU.
Changing the Pattern
Locate the white pattern switch window at the bottom of the grille
housing. Place your finger on the very small handle and slide the switch
sideways to change from Cardioid to Omnidirectional pickup pattern and
visa-versa.
The Omnidirectional
pattern is achieved by disabling the polarization
voltage to the rear diaphragm. The U-47 did not maintain equal output
levels across patterns.
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