120AFront and rear DescriptionsSection 1
1.1 Rear Panel Connections
AB CDE
A- IEC Power Cord Receptacle
This is the power cord receptacle of the 120A. An IEC cord is included with the shipped product.
B- Subwoofer Output Connector
This output connector sends signal to your subwoofer amplifier, the low bass signal which ranges
from 20 Hz up to the crossover frequency (80Hz to 120Hz). Nominal output signal level is +4dBu
into 600 &, and typical maximum output level is +22dBu into 600 &. This output is an imped-
ance-balanced output.
C- Crossover Selector Switch
This switch is used to engage the crossover function.
D- Output Connectors
The output section of the 120A offers impedance balanced/unbalanced 1/4� connections with a
nominal output signal level at +4dBu into 600 &, and typical maximum output level is +22dBu
into 600 &.
E- Input Connectors
The input section of the 120A offers electronically balanced/unbalanced 1/4� connections with a
nominal input level of +4dBu and clipping level is at +22dBu into 600 &. The 120A also offers
RCA input connectors with a nominal input level of -10dBV and clipping at +8dBV.
1.2 Front Panel Controls
FG H IJKLM
Subharmonic
Synthesizer
F- Power LED
This red LED indicates that power has been applied to the 120A.
G- Synthesis Bypass
Pressing the SYNTHESIS BYPASS will engage (when lit) or bypass the Synthesis effect of the
120A.
H- Crossover Select
This button is used to the select the desired crossover frequency of the 120A. When pressed
and lit, the 120Hz crossover frequency is engaged. Otherwise, the 80Hz frequency is used.
I- Crossover LED
This green LED (when lit) indicates that the active crossover has been selected. In this case, the
mains outputs (channel 1 and channel 2) contain only the high-frequency portion of the signal,
while the low-frequency portion appears at the mono Subwoofer output.
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120A User Manual
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ACEC
