Connecting to Your System
®
3
120A User Manual
4
Section 1
120A
Basic Connection
The 120A can be used with any line-level device. For more specific cabling information, refer
to the Cable diagram on page 7.
1. Turn off all equipment before making any connections.
2. Mount the 120A in a 1U Rack Space (optional)
The 120A requires one rack space. It can be mounted above or below anything that
doesn’t generate excessive heat, since it requires no special ventilation. Ambient tem-
peratures should not exceed 113
0
F (45
0
C) when equipment is powered.
Note
: Avoid over-tightening of rackmounting screws as this could damage the front
panel.
Caution:
Never remove the cover. there are no user-serviceable parts inside, and you
run the risk of an electric shock.
3. Make connections via 1/4” phone jacks or RCA jacks according to your requirements.
Subwoofer Operation:
Set the OUTPUT switch to FULL RANGE and connect the ampli-
fication for the main speakers to Channel 1 and Channel 2 Output Jacks.
Operation without a Subwoofer:
Set the OUTPUT switch to FULL RANGE and connect
the amplification for the main speakers to CHANNEL 1 and CHANNEL 2 Output.
Typical patch points include: a mixer’s channel or subgroup inserts when using the
120A on individual instruments or tracks; the mixer’s main outputs when mixing an
instrument preamps’s effects loop when using the 120A for guitar or bass; main outs of
a submixer as the signal is sent to main mixer. The 120A can be used either before or
after an external electronic crossover. When using a chain of processors, the 120A
should generally be placed as far down the chain as possible. We recommend you use
common sense and experiment with different setups to see which one provides the best
results for your needs.
4. Plug in the AC power cable to power On the unit.
Note: Check the line voltage. The 120A is shipped for 115V or 230V, 50Hz or 60Hz
operation. Refer to the unit’s rear panel to verify your unit’s precise line voltage.
1.4 Connecting the 120A to Your System