Jensen Twin-Servo 500 series, Руководство пользователя

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True to the Music
®
Radial Engineering Ltd. Jensen Twin-Servo 500
™
Module
4
THe CoNTrol PaNel
The 10 Segment leD
The Twin-Servo is equipped with a 10 segment LED meter that gives you instant visual
feedback of the incoming input signal. Although the Twin-Servo is unlikely to ever distort,
keeping the signal within normal working range will ensure optimal signal to noise. Turn up
the level control by testing for maximum volume. When in the red, turn down for headroom
and you are set to go.
180º Polarity reverse
Another handy feature on the Twin-Servo is the polarity reverse switch. This can be used to
better phase-align two sources such as two microphones that may be spaced differently in
a room or when combining a microphone with a direct box. You can also increase the width
of the stereo field when the two mics are out of phase. It is also great for matching up older
audio gear that may not follow the AES standard with pin-2 hot.
High Pass Filter (HPF)
One of the truly unique advantages with the Twin-Servo is that amazing frequency response.
Most preamps are unable to effectively reproduce frequencies below 20Hz. The Twin Servo
actually measures down to 5Hz! With so much bass, you will hear low end like never before.
The downside is that with so much bass to work with, it may be excessive, particularly when
recording several acoustic instruments together. The solution: reduce the resonance and
excessive bass by engaging the high-pass filter. This is one of the most practical features
on the Twin-Servo. When engaged, it gently rolls off bottom end below 80Hz and can help
clean up the mix.
-15dB Pad
A pad is primarily used to reduce the preamp’s input sensitivity so that when confronted with
an extra high level output signal, it will not overload the input stage of the mic preamp and
cause distortion. As the Twin-Servo has so much headroom, it will be unlikely that you will
ever need to use this feature. But it’s there just in case.
48V Phantom
This switch activates standard 48V phantom power to remotely feed your condenser mic,
active direct box or McBoost mic booster. When on, 48 volts DC is sent from the Twin-Servo
using the pin-1 (ground) and pin-2 (hot) wires to power the connected device. Simply engage
if needed. Be careful to turn off your audio system before activating! This will avoid a big
‘bang’ in your audio system due to the power-turn-on transient.
-20
-15
-10
-5
+0
+5
+10
20 20k 50 100 200 500 1k 2k 5k 10k
Hz
High-Pass Filter Response