dbx 120A - Manual (Page 12)

Connecting to Your System
4
120A
120A User Manual
Section 1
1.4 Connecting the 120A to Your System
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 temperatures
should not exceed 1130 F (450 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 CROSSOVER switch to CROSSOVER/FULL RANGE mode and
connect the amplification for the main speakers to the CHANNEL 1, CHANNEL 2 outputs.
In addition, connect the Subwoofer to the Subwoofer Output Jack.
Operation without a Subwoofer: Set the CROSSOVER 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 opera-
tion. Refer to the unit’s rear panel to verify your unit’s precise line voltage.