Wiring1
This wiring shows external pots, SPDT switch to turn the modulation on and off and external LED that flashes in time with
the Rate setting. Connect the wire from the SPDT to the “M” pad on the Aquaboy.
Note 1: in this case, connect pads 2 and 1 of the Depth pot on the AQB_MOD PCB as shown.
Note2: you can just leave the external LED off if you do not want the flasher.
Experimental:
It’s possible to hook up the Mod board without the switch to turn modulation off. To do so wire the Mod pad on the AQB_
MOD PCB directly to the “M” pad on the Aquaboy PCB. Make R9 220k instead of 47k. When you turn the Depth pot all the
way down, the modulation should go most of the way off. You may still hear a very slight amount, though.
Wiring2
This wiring shows the pots using trimmers. Use this if you only want fixed modulation with the delay.
Note1: you can just leave the external LED off if you do not want the flasher.
Summary of Contents for AQB_MOD 2019
Page 6: ...Schematic ...
