X3 : active blend preamp with 3 band EQ

- active only
- independent input stage for each pickup
- buffered signals are mixed in the active path
- smooth blend control, no insertion loss at center
- 0..+10dB independent gain control (also externally switchable)
- can even match active pickup with passive, P with J, etc.. as well as identical pairs
- independently selectable input impedance/pickup load
- selectable EQ frequencies:
bass: +/- 12 dB @ 40/80 Hz
mid: +/- 12 dB @ 220/400/600/900/1800 Hz
treble: +/- 14 dB @ 4/5/10/20 KHz
- power: 9V, 1.3 mA
- dimensions: 45 x 30 x 15mm (1.77" x 1.18" x 0.59") without wires
wiring (click for hungarian .pdf):
|
|
Battery fuel gauge

- your phone has it. your car has it. now your bass has it too.
- optimized for 9V, max input voltage is 30V
- blinks after you plug in, then goes to low power mode until you unplug the cable
- sleep current is less than 3 uA
- zero power consumption while the cord is disconnected
3 pulses: battery voltage is above 7.5 V
2 pulses: U > 6.5 V
1 pulse: U > 5.5 V
S.O.S. signal: U < 5.5 V, replace battery
- bright green LED, visible under direct sunlight
- PCB dimensions: 25.4 x 9 mm (1" x 0.36"), LED diameter: 3mm
- optional 3mm diffuse light guide available (installation example pictured below)

low-res video:
|