PreSonus CL44 - Manual (Page 5)

1.1 INTRODUCTION
Thank you for purchasing the PreSonus CL44 four channel dynamics processor. This processor was designed using state of
the art components to deliver crystal clear compression and limiting for an infinite period of time. We believe that it is an
exceptional sounding unit as well as an exceptional value. Feel free to contact us at 1-800-750-0323 anytime for any reason
whatsoever. We value your suggestions and your comments!
Please pay close attention to how you connect your CL44 to your system. Improper grounding is the most common cause of
noise problems found in studio or live sound systems. We urge you to at least scan this manual before hooking up your
CL44 to become familiar with its features and various applications.
Good luck and enjoy your CL44!
1.2 FEATURES
The following is a summary of your CL44's features:
Full Featured Compressors/Limiters
Each channel of your CL44 contains an audio compressor and limiter. You have broad control over threshold, ratio, attack,
and release for each compressor. You can select between auto or manual attack and release curves (refer to the application
section of this manual for a quick tutorial on compression and limiting). The compressor will prove to be very useful in many
situations such as recording instruments or vocals that vary in loudness.
Channel Linking
Using the Link function, you can link together two channels of the CL44 for stereo operation. When linked, the processors
follow the setting of the linked channel to the left, which becomes the master. When two channels are linked, the sidechains
are summed.
Separate Bypass and Gain for Each Channel
All four channels have a separate bypass for listening to 'before and after' performance tests and a gain control to make up
for any output level lost
due to compression of the signal.
Insert Sidechain on Each Channel
Each channel of your CL44 was designed with a special jack for spectral processing, compression keying and ducking
applications. Sidechaining is useful for removing annoying sibilance from vocal tracks (de-essing) or automatically ducking
tracks behind a narrator for 'auto mixing' a service, broadcast or performance.
Optical Mode
The CL44 has an optical compressor emulation mode. This feature alters the signal’s characteristics to sound like the signal
was processed using a vintage compressor.
Compander
The CL44 has a compander on each channel. The compander works like an upward expander. Essentially, it increases the
level of the signal that is below the threshold according to the percentage specified on the knob. The range is from 0% to
100%.