455920

Citronic CL22 Manual

3
Zoom out
Zoom in
Previous page
1/4
Next page
What is a Compressor-Limiter?
A compressor-limiter is a device for controlling the “dynamic range” of an audio signal. The dynamic range is how we describe the variance
between quiet and loud passages of audio. For example, a snare drum has a very dramatic, loud attack which dies out to quiet very quickly,
whereas a note played on a violin has a fairly constant moderate sound level – these have very different “dynamics”. Sometimes we would like to
be able to make quiet passages less quiet and loud passages less loud – this is called “compressing” the dynamic range.
The following graph shows how audio level over time is affected by compression of a ratio 2:1
It may be preferred to maintain the quieter passages of audio unaffected and only apply the compression at the highest volume levels, set by
a “Threshold” parameter. This is known as “Limiting” and can be useful to control maximum sound levels for safety of listeners and to protect
audio equipment.
Since compression or limiting can allow the lower frequencies to be emphasised, an ENHANCER processor is added, which when turned up,
helps to restore the balance of higher frequencies.
In addition to these functions, the Citronic CL22 has an EXPANDER/GATE for each channel. When there is a period of silence in audio, often
there is low level noise from RF interference, circuitry noise or mains hum. The EXPANDER/GATE section cuts out the audio below a set volume
level to eliminate these unwanted noises when the audio should be silent.
Connection
The CL22 can be used either as 2 independent mono compressor/limiters (e.g. for channel inserts on vocal microphones) or as the main stereo
compressor/limiter for a sound system or recording setup. When the CL22 is to be used to control the main stereo mix, it should be connected
via the master inserts on the mixer or between the mixer and power amplifier/recording device. If settings for each side of the stereo are to be
identical, the STEREO LINK button can be pressed in and all settings for Channel A will apply to Channel B and controls for Channel B will be
ineffective.
Connect the L+R outputs from the mixer or insert sends to the Channel A and Channel B inputs of the CL22 using good quality XLR or 6.3mm
jack leads (balanced or unbalanced). Select the correct operating level (+4dBu or -10dBV) for high or low impedance type signals via the
OPERATING LEVEL switches on the rear panel. Connect the L+R outputs from the CL22 to the amplifier/recording device inputs or insert
returns. Connect mains via the supplied IEC, ensuring that the voltage selector is the same as supply voltage.
In certain scenarios, it may be preferred to make the compressor respond to the volume of an external signal (e.g. to duck the audio when a
vocal announcement is detected). Plugging an external control signal into the DETECTOR LOOP via mono 6.3mm jack will achieve this effect.
Alternatively, in some cases, it may be desired to reduce volume only when the high frequencies are loud. This can be useful to reduce volume
of “sibilance” (the “S” and “T” sounds of a vocal passage) and can be achieved by placing a high pass filter win the DETECTOR LOOP using an
insert lead (TRS jack to 2 x mono jack). The Ring connection carries the SEND of the loop and the TIP carries the RETURN of the loop, both
sharing a common ground or earth. The compressor becomes a “De-esser” in this configuration.
3


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Citronic CL22 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Citronic CL22 in the language / languages: English as an attachment in your email.

The manual is 0,48 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info