LDB-1 User Manual
19
Connectivity
Power
The LDB-1 runs on 9 to 10 volts. You can connect a 9 volt battery, and/or an AC adapter (AKA wall wart).
The power jack on the LDB-1 is a center-negative, type-M power jack. You can use just about any stand-
ard 9 to 10 volt pedal power supply.
Do not use a center-positive power plug, or a power supply that exceeds 10 volts, or you could perma-
nently damage the circuitry of the LDB-1.
At Delptronics, we are partial to the “Danelectro DA-1 9.6V No Hum AC Adapter” which you can get
online for about $9.
Audio Out
The audio output is a mono 1/8" (3.5mm) jack. If you insert a stereo plug, it will still work, but you will
only get sound out of the left channel.
If your amp or mixer has 1/4" inputs, as most do, it is preferable to use a 1/8" to 1/4" cable, rather than
a 1/8" to 1/4" adapter with a 1/4" to 1/4" cable.
Analog Synthesizer Connectors
The
Trigger Out
,
Clock In
, and
Gate In
jacks are mono 1/8" (3.5mm) jacks. They are used for connecting
your LDB-1 to a modular synthesizer.
Trigger Out
The trigger output voltage is half the power supply voltage, which is 4.5 volts with a 9 volt power supply.
Keep in mind that both batteries and AC power adapters rated at 9 volts could be supplying slightly
more or less than 9 volts. The LDB-1 will still work fine, but the trigger output will be slightly higher or
lower. That should not affect most modular synthesizers.
Clock In
The Clock In jack accepts a standard 5 volt signal typical of modular synthesizers and sequencers. So,
you can control the tempo of the LDB-1 from another device, or use a master clock module to control
multiple devices, including the LDB-1.
Gate In
The Gate In jack accepts a standard 5 volt signal typical of modular synthesizers and sequencers. The
Gate In signal provides the same function as the Run button. That is, it starts or stops the pattern or
song.
