BROAD STROKES
This is an extremely musical EQ based on the classic tone control circuit originally described by Peter Baxandall in 1952.
Due to its simplicity, some version of this circuit has been used in countless Hi-Fi systems, graphic EQs, and guitar amps since it was first introduced.
It was made popular in the mastering community by engineer Dave Collins with his Davelizer EQ.
It has a very pleasing sound that's great for making subtle changes or large tone shifts.
It has some inherent limitations that differentiate it from the Parametric EQ.
You can have a maximum of 3 bands, with 6 frequency points per band.
You Q is fixed but you can select the value, and shelving modes are available on the low and high bands.
I have also developed a unique variable bell/shelf control that gives you the intermediate steps between bell and shelf mode (see the graph below).
This allows you to combine the effect of a bell and shelf in one band.
OPTIONS
Every aspect of the design can be customized to suit your particular needs.
The photos above show many examples of the different ways it can be configured.
The EQ can have a maximum of 3 bands.
You can choose your desired Q for each band individually.
There are a maximum of 6 available frequency points per band, and the selection is more limited.
This is due to the circuit topology which relies on capacitor values to set the frequency (instead of resistors).
The selection of available capacitor values is much more limited so it's difficult to target really specific frequency points.
The usual process is that you give me your desired frequency points, Q and maximum gain then I will see how close I can get.
Since this is such a broad EQ hitting a precise frequency isn't critical.
I can generally accommodate any feature or modification that you desire.
Please contact me if you're interested or have any questions.
