Control Elements - Alto PBM4 Owner's Manual

INPUT SECTION
1 MONO MIC/LINE CHANNELS
Your PBM4 is equipped with 4 low-noise,
microphone preamplifiers with optional phantom
power supplying +15 Volt. You can connect
almost any type of microphone. Dynamic
microphones do not need phantom power. Use
phantom power only with condenser microphones
but make sure that the phantom power button
is disengaged before connecting the microphone.
Phantom power will not damage your dynamic
microphones but it may damage tube or ribbon
microphones so make sure to read the microphone
instructions manual before engage phantom power.
Use switch (2) to activate/deactivate phantom
power. These two channels are also equipped with
1/4" TRS balanced/unbalanced plugs to connect
line-level instruments such as keyboards, drum
machines and effect devices.
NOTE: Never try to connect a line-level signal to
the XLR MIC input when the phantom power is
engaged or you may seriously damage your equipment.
2 +15V PHANTOM POWER SWITCH
This switch will apply +15 Volt Phantom Power only to the 4 XLR inputs
sockets.
3 LEVEL CONTROL
This control is used to adjust the overall level of respective channel. The
adjustable range goes from -
4 DSP/FX-AUX
This control is used to adjust the level of respective channel signal sent to
the Auxiliary Bus. The configuration is post-fader so the signal sent to the
AUX Bus will be affected by the LEVEL control of that particular channel. In
this typical compact unit, the channel signal is not only assigned to external
effect or processor equipment directly but also to internal digital multieffect.
EQUALIZATION
You have two EQ controls for each mono input channel each providing +/-15 dB
of boost and cut. The signal will be unaffected when the controls are on center
position.
5

4. CONTROL ELEMENTS

to +10dB. .
0dB
5
+15dB
15dB
0dB
6
15dB +15dB
0dB
DSP/FX
4
+10dB
0
dB
3
+10dB
LEVEL
LINE N (bal )
1
2 1
3
MIC IN (bal.)
CH 1
HIGH
12KHz
LOW
80Hz
AUX1
POST