The building of the basic equalizer is very simple and fast. The user can start the building with the lower height parts (resistors, ceramic capacitors and ICs sockets). Then should be solded the DC/DC, the electrolytics capacitors and the TO-220 (transistors and regulators) components. The last phase is the wiring of the keys, the display and the connectors.



The TO-220 are placed with the small metallic tab as shown in the assembly file. The polarized capacitors have the positive to the board edge (shown in the assembly). The dual in line integrated circuits have the pin 1 marker shown in the assembly scheme. The DC/DC converter cannot be inverted because the pinout is not mirrorable.