User guide

Troubleshooting
Most troubleshooting issues can be traced to some form of pilot error, so we'll cover the obvious
first. If the microphone produces no output whatsoever, establish that the cables are properly
connected and that none of the pins in the 7-pin cable-set are damaged, bent or missing. This also
applies to the 7-pin male connector at the bottom of the microphone. Make sure that the power
supply is connected and set to the proper voltage. The pilot light should illuminate when the
power switch is turned on. In addition a small ballast lamp located at the base of the microphone
should also glow dimly.
If the power supply fails to power up, check the fuse. The safety fuse should fail only if a
problem is present. If the power supply blows a fuse, check the cable set for damage. If none is
found, make sure the fuse is of the correct type. Make certain the power supply is set to the
correct voltage for your area. If the supply still refuses to power up, contact the factory.
If the supply and microphone indicate that power is being supplied properly but the mic still
produces no sound, make sure the preamplifier is working properly and that the 3-pin
microphone cable is in good working order. Use another microphone to establish that the signal
path is indeed working. If this fails to resolve the problem, contact the factory.
If the mic works but is noisy or has low output, there could be a problem with the ribbon element
or the vacuum tube. In either case, the microphone is not user serviceable and repairs should be
directed to an authorized service center.
Features
• Very high overload characteristics – maximum SPL greater than 135dB
• Vacuum tube electronics offer greatly enhanced output and constant, optimized impedance to
the ribbon element
• Extremely low residual noise
• Ribbon element is unaffected by heat or humidity
• Absence of high frequency phase distortion
• Excellent phase linearity – even off axis
• Equal sensitivity from front or back of element
• Consistent frequency response regardless of distance
• Compact size
!21