6. SSL Console Channel Dynamics

SSL Console Bundle for MX4

Page 14

THRESHOLD

Whenever a signal exceeds the level set by this control, the compressor will start to act at the ratio set by the RATIO control. This control also provides automatic make-up gain, so as you lower the threshold and introduce more compression, the output level is increased, maintaining a steady output level regardless of the amount of compression.

TIP: The Auto Make Up of the Dynamics on SSL Consoles provides a very intuitive and fast way to change compression on multiple channels. Before applying the proper level balance between channels with the faders, experienced SSL Operators start with activating the dynamic sections and roughly adjusting it individually on all channels.

It is then a lot easier and quicker to achieve a first good sounding rough mix.

RELEASE

Sets the time constant (speed) with which the

compressor returns to normal gain settings once the signal has passed its maximum.

FAST ATT

Provides a fast attack time (3mS for 20dB gain reduction).

When off, the attack time is program dependent between 3mS – 30mS.

Gain Reduction Meter

The yellow and red LEDs, on the bottom of the LED display area, indicate the amount of gain reduction (compression).

The green LED Meters indicate the amount of gain reduction on the expander/gate. (next section)

Gate/Exp Section

The gate/expander section contains a number of useful features including a variable range from 0 to 40dB, a variable threshold from -30dB to +10dB, a fixed attack time (switchable to Fast Attack of 100μs), a variable hold time from 0 to four seconds and a variable release time from 0.1 to 4 seconds.

By default, the Gate/Expander section functions as an ∞:1 gate. When the EXP button is pressed, the section becomes a 2:1 expander.

RANGE

Determines the depth of gating or expansion. When turned fully anticlockwise (Range = 0), this section is inactive.

When turned fully clockwise, a range of 40dB can be obtained.

THRESHOLD

A Variable hysteresis is incorporated in the threshold circuitry. For any given ʻopenʼ setting, the Expander/Gate will have a lower ʻcloseʼ threshold. The hysteresis value is increased as the threshold is lowered. This is very useful in music recording as it allows instruments to decay below the open threshold before gating or expansion takes place.

RELEASE

This determines the time constant (speed), variable from 0.1 to 4 seconds, at which the Gate/Expander reduces the signal level once it has passed below the threshold. Note that this control interacts with the Range control.