The G4 is ideal for a variety of dynamics applications including gating, ducking and downward expansion. Internal or external side-chain key input, built-in side-chain filtering, side-chain listen, look-ahead signal detection and advanced metering combine with properly defined threshold, attack, decay, hold, and depth controls to provide the necessary tools for unsurpassed flexibility and performance. The G4 is the only quad gate available with this complete set of features.
The graph below shows the difference between Gate and Expander operation. The solid red trace shows the side-chain input.
Gate:The green long-dash trace shows the operation of a Gate. The Gate attenuates the signal by a fixed number of dB when the signal is below threshold. The response is adjustable over a wide range using Attack, Release and Hold controls. It is possible to achieve natural decay with string instruments by setting the release for slow ramp down. Fast attack, quick release and deep depth settings can be used to change the character of drums or other percussion instruments.
Expander:The blue short-dash trace shows downward expansion with a ratio of 2:1. The signal is turned down gradually, resulting in lower noise in the absence of signal while allowing natural signal decay. Downward expansion generally uses a Release time of about 500 ms to 1 second and an Attack setting of 100 ms to 500 ms. The Hold function is not active when using the Expander.
G4 Quad Gate
Dynamics controls include:
- Gate / Expand / Duck Modes
- Look-ahead Gating
- Stereo Link
- Adjustable Threshold, Attack, Release, Hold, Depth and Ratio
- Gain Reduction / Gate meter
Side-chain processing includes:
- Side-Chain metering
- Internal Low- and High-Cut Filters
- Internal / External switch
- Listen switch