Rolls CL151 GLC User Manual

USER GUIDE

ROLLS CORPORATION

SALT LAKE CITY, UTAH

1/4": +14 dBV Balanced

Weight: 1 lbs. (.45 Kg)

The plug connected to the Tip is the "Send" which will connect to the Input of the signal

connected to the main mixer or amplifier as well. When the paging signal begins, its signal

goes to the main mixer and the Side Chain circuitry. The music is compressed or "ducked"

Thank you for your purchase of the CL151 GLC Gate Compressor Limiter. This unit pro-

vides smooth, soft-knee compression and limiting with a gate. Gain reduction is indicated

via a front panel 5-segment LED bargraph. Plus, the unit has a mic preamp input with 12

volts phantom power available.

WARRANTY INFO

www.rolls.com

THRESH: Sets the point at which the input signal must surpass to "open" the gate circuitry

or allow signal to pass to the output.

amount of increase of input compared to output signal. Thus, at a 1:1 ratio, a 1 dB in-

crease of input signal will result in a 1 dB increase of output signal. At 2:1, a 2 dB increase

of input signal will result in only 1 dB increase of output signal. At 8:1, an 8 dB increase of

THRESH: Sets the point that the input signal must reach for compression to begin.

or gain reduction.

signals.

SIDE PANEL

The example below shows the connection of a microphone. If the microphone requires

to the front panel. Connect the output of the CL151 via a balanced or unbalanced 1/4"

setting is for "unity gain".

for +10. These initial settings essentially bypass the gate and compressor circuits.

The compressor RATIO and THRESH controls work together to control the amount of

compression, and the point at which compression begins respectively. Decreasing the

THRESH control lowers the amount of signal required to begin compression - so it com-

amount of compression.

The gate THRESH control, after being turned slightly counterclockwise from the "off" posi-

tion, goes to its maximum level. This means it requires a higher signal level to "open" the

gate. As the gate THRESH control is turned counterclockwise, a lower and lower signal is

The gate REL (release time) control sets the amount of time taken for the gate to "close"

after the signal drops below the THRESH level. For example, the CL151 will continue

To access the compressor detector

circuit directly, Rolls has included

a Side Chain jack. The Side Chain

works somewhat like an effects