The audio part of the circuit is a faithful reproduction of the G10 that has been our flagship for more than 15 years – if it works, don’t fix it. The only minor change is a re-bias of the output stage, which allows some 4-5dB more headroom while preserving the original stage’s soft transition into overload.
Some changes have been made to the sidechain functions, including a wider threshold range (to allow S compression in weak-S M/S-mode) and even faster fastest attack time (because we can, it’s a vari-mu you know…)
A simple sidechain high-pass filter was added (located on the bypass switch) which cuts off compressor keying below ca. 80Hz at a slope of 6dB/oct. This mainly to keep pumping artifacts under control when working fast in bass-heavy material.
M/S Mode
Input and output transformers can be switched between standard two-channel L/R mode and the M/S mode where both matrixing and dematrixing done is internally: M/S mode allows you to independently control dynamics (and levels) in mono and side parts of program material and still have the result on the output as standard stereo information.
Linking/dynamic interaction between channels in dual-mode can be set continuously from none to full by the Vari-link control knob – enabling you to dial in a difference in processing between channels, then varying difference amount or compression “correlation” with a simple turn of a knob. This function is especially nice when dealing with M/S compression, where the amount of correlation gets very important.
Bypasses are, off course, hard and relay based. You bypass, Gyraf Audio G22 acts only like an additional piece of cable. Note that some modes prohibit certain bypasses – like when working in M/S mode, you can’t separate and hard-bypass M or S alone (as we use both channels’ transformers for the matrixing) so when you bypass M, it’ll bypass S also and the other way around.
The Gyraf Audio G22 is as standard available as 230V or 115V mains voltages – Please specify when ordering
