The VSM is a cardioid single tube true
condenser microphone that features servo-
valve technology and the exclusive CAD
Optema OS 110 capsule. The VSM is a natu-
ral bridge between the valve technology
developed for the VX2 microphone and the
servo opamp technology developed for the
Equitek series microphones. The head amp
in the VSM microphone is a 12AX7 tube in a
circuit that is optimized for maximum headroom
and low noise. The output stage is a high
speed dual opamp in a balanced differential
configuration that allows long cables to be
used without affecting microphone perfor-
mance.
True large diameter capsule with 1.1" inside diameter. (1.34" out-
side diameter.)
3 Micron thick high tension, diaphragms made from the latest
high strength polymer film.
24K Gold sputtered diaphragm coating.
Each capsule is hand adjusted for proper damping and consistent
frequency response.
Other capsule components made from precision machined brass
and stainless steel.
The VSM has extremely wide frequency
response and dynamic range with a slight
rising response characteristic at 15KHz. The
VSM is ideal for both vocal and instrument
recording applications. The VSM comes
complete with an elastic suspension mount,
heavy duty analog power supply, and a 30
foot professional 7 conductor cable.
Optema Series,
OS 110 Condenser
Capsule
The VSM comes with an OS 110 series capsule that is manufac-
tured in our capsule facility in Conneaut, Ohio. The OS 110 capsule
features:
VSM Shock Mount
The VSM shock mount is an integral part of the VSM micro-
phone and only needs to be removed to service the microphone. To
remove the shock mount, unscrew the two knurled knobs on either
side of the microphone and the knurled knob in the back of the micro-
phone.
Use and Operation
Mount the microphone in the desired location. Plug the included
seven pin cable into the microphone and the power supply. The out-
put of the microphone is at the 3 pin XLR connector on the power
supply. Use a standard balanced 3 pin XLR cable to connect the
microphone output to the input of your mixer or recorder. Phantom
power is not required. Plug the power supply into your AC mains
supply. Turn the power supply on using the rocker switch on the right
side of the front panel of the power supply. The LED on the rocker
switch will light. Allow a few minutes for the vacuum tube in the micro-
phone to warm-up and stabilize. The output level of the VSM is quite
high. It is recommended that you start with trim control or input level
control turned down on your mixer or recorder. It is also recommended
that you turn down your input level whenever changing any of the
switch settings on the microphone.
Large Diaphragm
Condenser Tube
Microphone
Summary of Contents for VSM
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