Instruction Manual

OPERATING / SERVICE MANUAL FSC 22
STEREO COMPRESSOR
QUICK START
These virgin pages tremble at your touch. You’re eyes, the first. Their desperate inquisitive
scanning overwhelms. The summer air burns with anticipation. Do what you must, but what-
ever you do, don’t stop...PLEASE DON’T STOP...reading that is, at least this section before
you torch it.
Here’s some quick highlights:
Set the rear INPUT TRIM switch for the appropriate gain for your signal levels. Don’t be
thrown by the combo Input connectors; they take either ¼" TRS or 3-pin (XLR-type) plugs.
Both Output connectors may be used at the same time if needed, e.g., splitting to different
zones, etc.
Be sure the SYSTEM MODE switch is in its out (DUAL) position, as are the BYPASS
switches. Initially press the METER MODE switch in. Now the meter reads Output Level in
dBu—very useful during set-up. Remember to switch it out when through, so it returns to its
main role of displaying Gain Reduction.
Set the LEVEL controls to “7” for unity gain—a good place to start. Use the BYPASS
controls to A-B levels.
When used with true stereo program, press the SYSTEM MODE switch in to the SLAVE
position. This causes both Channels to operate equally if either exceeds its THRESHOLD
setting.
NEVER CONNECT ANYTHING EXCEPT AN RS 1 OR OTHER APPROVED RANE AC
POWER SUPPLY TO THE RED CONNECTOR THAT LOOKS LIKE A TELEPHONE JACK ON
THE REAR OF THE UNIT. This is an AC input and requires special attention if you do not
have an operational power supply EXACTLY like the one originally supplied with your unit. A
Rane Model FRS 8 or RAP 10 power supply is acceptable as well.
SYSTEM CONNECTION
Locating the FSC 22 in your system depends on the
application. When assembling a sound reinforcement system,
place the FSC 22 between the equalizer (if used) and the
active crossover, or the power amplifier if using passive
crossovers.
In recording applications, locate the FSC 22 in the insert
loops on the mixing console, or in series with the outputs
before the recorder. Most consoles allow headphone monitor-
ing of the processed signal (i.e., post inserts). A most useful
feature.
When using the FSC 22 on mixdown, connect it to the
output of the multichannel recorder, or in the inserts of the
mixdown console.
Many recording situations require connecting the FSC 22
to the patch bay in the system. This makes it easy to move
from one signal path to another, as new applications dictate.
Use only fully balanced wiring of this and all components,
without signal ground ever connecting between units. All
shields should be chassis, i.e., earth grounded. Consult Rane
Note 110, an application guide available from Rane Corpora-
tion or your local Rane dealer. This note details standard
wiring conventions which help reduce noise and distortion.