Vocopro CLG-600 User Manual

Front Panel Description and Controls

(cont.)

4. IN/OUT button - This switch enables you to quickly

hear the CLG-600 compressor/limiter IN or OUT of the

audio chain. When the switch is in the OUT position,

all limiting and compression controls and functions

are bypassed, with the exception of the gain and

output controls, which continue to function as

straightforward level controls.

5. THRESHOLD control - The THRESHOLD control

has a range of -40dB to +20 dB, allowing applications

from low level compression to high level limiting. The

THRESHOLD control determines the audio level above

which GAIN REDUCTION occurs. When the

THRESHOLD LED comes on, that means that GAIN

REDUCTION is beginning to occur, due to input signal

peaks exceeding the selected threshold in dB.

6. RATIO control - This control determines the RATIO

of change in output level to changes in input level

for all signals above threshold. The numbers printed

around the RATIO control are calibrated in dB and

indicate the increase in input (above threshold)

required to produce a 1db increase in output. This

can be expressed conveniently as a ratio. If the

output remains constant no matter how high the

input level, we have an infinite input/output ratio.

NOTE: It should be remembered that the RATIO

control has no effect on signals which are below

threshold

. There is a common but incorrect

notion that limiting always implies the use of an

infinite ratio. Although there are times when an

infinite ratio is desirable, there will be situations

where infinite, or "hard", limiting action is neither

appropriate nor necessary.

7. ATTACK control - ATTACK controls how fast the

compressor reacts to signals passing over the

threshold point. The available range is from 0.1 to

200 ms. This control when used correctly creates

either a smooth or abrupt signal process.

8. RELEASE control - The RELEASE control

determines how fast or slow a compressed

segment returns to its original volume. The

available range is from .05 to 4 seconds. This

control when used correctly creates either a

9. AUTO/MANUAL switch - By activating the AUTO

switch to the ON position, the attack and release

controls are handled by the CLG-600

automatically. When it is set to the MANUAL

position, the attack and release controls will

adhere to settings of the controls in place. This

allows for unobtrusive musical compression with

widely varying dynamics to occur without

"manning" the sound system.

10. OUTPUT LEVEL control - OUTPUT Level control

is provided to fully cut or restore up to -/+ 20 dB

of system gain. For unity gain, set the control to 0.

NOTE:

When the unit is in the BYPASS mode the

output

control still functions.

11. GAIN REDUCTION meter - This 8-stage LED

meter indicates the actual GAIN REDUCTION

processing level and displays this in range

of 0-30 dB.

12. LEVEL EXPANSION meter - This 8-stage meter

indicates the actual LEVEL EXPANSION level and

displays this in a range of -30dB to +6dB.

LEVEL

THRESHOLD

MANUAL

AUTO

COMPRESSOR/LIMITER

RATIO

RELEASE

Sec

O U P U T

CH 1

30 27 24 21 18 15 12 9 6 4 2 1

GAIN

OUT

-30 20 -10 -5 -3 0 +3 +5

+20

+10

-10

-20

-30

-40

2.5

1.5

200

2.5

0.1

.05

0.5

-20

+20

OFF

msec