The layout for this circuit is unchanged from the published project design. It is a versatile Constant-Q equaliser, and can also be used anywhere that 8 bands of EQ is sufficient, including musical instrument amps or car sound systems.

The PCB comprises a complete 8 band constant Q equaliser, with provision for rotary pots to mount on the PCB. It uses 9mm square pots, either with or without mounting flanges. Requires either a 15V AC input at 100mA or more, or an external power supply (e.g. P05) giving ±15V at about 40mA.

Please Note: This is a new board, and is double-sided with plated-through holes (with no increase in price!). Rework of double sided boards can be difficult, because they are easily damaged if you make a mistake placing a part. For a limited time, an original P84 board will also be supplied free of charge (construction details are in the archive section of the secure site).

Order Code	P84 (Board is coded EQ8-001)
Size (mm)	116 x 60