dbx 122 - Page 6

A. (Tape) Record Level Match Control
This control allows you to match the dbx Record Output level to
your tape recorder’s input sensitivity. Setting is non-critical, and in
most cases a center-range setting of about 12 o'clock will suffice; for
more exact settings, use a test record or tone generator as described
on Page 15. In no case will the LEVEL MATCH setting affect the
dbx unit’s encode/decode performance. (NOTE: The 122 has
1 control per channel. The 124 has 1 control to simultaneously
adjust 4 channels.)
B. Record Inputs
Connect the cables from your preamplifier’s TAPE OUTPUTS
(REC OUT of the Tape Monitor Loop) to these inputs. These cables
were previously connected to your tape recorder’s LINE or AUX
(Record) INPUTS. (Use only the #1 and #3 RECORD INPUTS for
the 124 in a stereo sound system.)
C. Record Outputs
Connect the cables from these outputs to your tape recorder’s
LINE or AUX (Record) INPUTS. (Use only the #1 and #3 RECORD
OUTPUTS for the 124 in a stereo sound system.)
D. Play !nputs
Connect the cables from your tape recorder’s LINE or AUX
(Play) OUTPUTS to these inputs. (Use only the #2 and #4 PLAY
INPUTS for the 124 in a stereo sound system.)
E. Play Outputs
Connect the cables from these outputs to your preamplifier’s
TAPE INPUTS (Play Inputs of the tape monitor loop). These
cables previously came from your tape recorder’s LINE or AUX
(Play) OUTPUTS. (Use only the #2 and #4 PLAY OUTPUTS for
the 124 in a stereo sound system.)
F. AC Power Cable
Connect this cable to 117V, 50 or GOHz AC power source only.
The Model 122 requires a maximum of 5W of AC power while the
Model 124 requires a maximum of 7W of AC power.
G. Disc Play Level Match Control
This control allows you to adjust the 124’s output level to your
preamplifier when you are playing a dbx-encoded phonograph disc.
This adjustment is not critical and does not affect the linearity of
the disc decoding process. Adjust the DISC PLAY LEVEL MATCH
control so that playback levels are approximately the same whether
you are decoding a dbx disc or have the 124 in BYPASS mode for a
conventional source.
H. Tape Play Level Match Control
This control allows you to adjust the 124’s output level to the
tape play input of your preamplifier. Like the RECORD LEVEL
MATCH control, this adjustment is not critical and does not affect
the linearity of the encode/decode process. Adjust the TAPE PLAY
LEVEL MATCH control so that playback levels are approximately
the same whether you are decoding dbx encoded tapes or have the
124 in BYPASS mode for a conventional source. Detailed instruc-
tions for this adjustment begin on Page 15.