(Expandable) Graphic Equaliser

Posted on Jun 19, 2012

This equaliser is designed as a preamp suitable for musical instruments - guitar, bass and keyboard in particular. Unlike most conventional graphic equalisers, each slider ranges from fully off to fully on, and not the more conventional +/-12dB or so that is normally available. As a result, there is no flat setting (other than all off!). This graphic is designed to be used to create a sound, and is not suitable for hi-fi. It may be used as an add-on unit to existing instrument amp preamps, tone controls, etc. The flexibility is extraordinary, allowing a hollow `single frequency` type sound, right through to almost any tonal variant imaginable. This is the first of several projects based on the multiple-feedback bandpass filter described in Project 63, it can be made with as many (or as few) filter sections as you want.

(Expandable) Graphic Equaliser
Click here to download the full size of the above Circuit.

Leave Comment

characters left:

New Circuits



Popular Circuits

USB selector switch
Receiver Audio Circuit
mains voltage monitor
Rc Cars Cmos
drm direct mixer ef956ak5
2002 blazer: 02 sensor circuit malfunction solenoid it warms
LEDs Revisited
Sensitive envelope detector circuit diagram
DK-1 type control box using the AC electromagnet closing circuit