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— Phantom Power Applies +48vdc in a phantom configuration
1
.
On
Off Phantom power is automatically turned off when you
select Sensitivity: line.
w
WARNING!
If you apply phantom power to an unbalanced microphone, or to a mic with
shorted wiring or cables, you may damage the microphone and ZephyrExpress.
Don’t use phantom power unless you’re using a condenser microphone that
you’re sure is wired for it.
— Low Cut Filter Applies a gentle filter
2
to reduce wind noise, popped plo-
sives, and building rumble. It’s a good idea to leave this on
for all voice applications, and turn it off for music transmis-
sions.
— Mic 1 test tone Substitutes an 860Hz sine wave for the microphone’s
signal, for testing the ISDN connection and setting nominal
volumes through the broadcast chain. The tone’s routing
and level are adjusted by the front-panel MIC 1 controls.
— Mic 2
— Sensitivity See Mic 1 submenu, above.
— Phantom Power "
— Low Cut Filter "
— Mic 2 test tone "
— Limiter bypass The limiter is applied to both microphones at once
to preserve stereo imaging.
— Line Sens Both line inputs are switched simultaneously.
Professional (+4dBu nominal)
Consumer (-10dBu nominal).
h
HOT TIP!
The line inputs remain electrically balanced even when Consumer is selected. You
can use this to support long cable lengths (with a transformer at the other end),
or for phase inversion. For unbalanced wiring details, see Section 5 Hardware.
1
See Section 4, Audio.
2
-3.75 dB @ 100 Hz; -10 dB @ 40 Hz.