model
101
owner’s manual
page 4
GAIN CONTROL
The gain control has 11 positions and adjusts the voltage
gain on the microphone input from 10dB to 60dB in 5dB
steps. When using the instrument input, the gain range is
–10dB to 40dB in 5dB steps. NOTE: If you ordered the high
gain version of the 101 for use with ribbon microphones,
the gain range of your unit on the microphone input is 20dB
to 70dB in 5dB steps and the gain range of the instrument
input is 0dB to 50dB in 5 dB steps.
TRIM CONTROL
The trim control provides 10dB of continuously variable
output attenuation. In the fully clockwise position the
trim is at unity (no attenuation). In the fully counter-
clockwise position the trim is at -10dB. For reference, the
3 o’clock position is -4dB and the 12 o’clock position is
-8dB. The trim control should be left in the fully clockwise
position during normal recording.
48V PHANTOM POWER
This switch provides 48 volts to power condenser
microphones. The phantom power switch (labeled 48V)
connects the +48V power supply to pins 2 and 3 on the XLR
input connector.
PEAK INDICATOR
The LED peak indicator, which monitors the signal
between the input and output amplifiers, illuminates
the green LED at -14dBu and illuminates the red LED at
+16dB (10dB before clipping). It is located between the
GAIN and TRIM controls.
HIGH PASS FILTER
(labeled HPF) Sometimes referred to as a bass roll-off, the
high pass filter rolls off at 75Hz. This 12dB/octave filter
employs a transitional Thompson-Butterworth response
for the best combination of passband flatness and time
domain response.
POWER SWITCH
The power switch connects power from the DC input
connector to the preamplifier circuitry. When depressed,
the amber POWER LED will illuminate.
1/4 inch TRS instrument HI-Z input
Designed to accommodate a wide variety of high impedance
input sources, making the 101 an excellent choice as a DI box
which will flawlessly preserve the sound of the instrument.
front panel controls
