The head amplification system utilized in the active series ribbon
microphones is designed to operate with standard 48-volt simplex
phantom power sources only.
The microphone will not work at
all if phantom power is not provided to the microphone!
This as-
pect of an active ribbon microphone is in sharp contrast to the
common wisdom normally applied to ribbon microphones, where
phantom power usually spells danger or destruction to the ribbon
element. Active ribbon microphones require phantom power to
operate.
To ensure long service life of your R-122 active ribbon micro-
phone, care should be taken when connecting the microphone to a
phantom power source. We have prepared a few tips to ensure
that your active ribbon microphone will perform perfectly for
many years. We offer the following information as a general set
of “good habits” that apply to both active ribbon mics and solid-
state condenser microphones.
1. Always be certain that the correct microphone cable is used
with the microphone, and that the cable is in good serviceable or-
der. Standard microphone cables provide a shielded ground car-
ried along to Pin-1, and a balanced differential signal carried
along Pins-2 & 3. Pin-2 is signal hot (in phase) and Pin-3 is signal
cold.
2. Although it is usually safe to “hot plug” most phantom pow-
ered microphones to a preamplifier or console with the phantom
activated, we suggest that if it is possible to de-activate the phan-
tom power prior to plugging the microphone to the cable, do so.
This minimizes any chance of random voltage surges entering the
microphone. More importantly, it reduces the possibility of loud
pops being transmitted to your monitor speakers should the vol-
ume control be raised. Serious damage to your speakers could re-
sult from this activity.
3. Be certain that the input channel fader or volume control is set
to minimum before plugging in
any
microphone. Preamplifier
gain trim should be set to minimum. Plug the microphone into the
5
Summary of Contents for R-122
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