LDB-1se User Manual
22
Connectivity
Power
The LDB-1se 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-1se is a center-negative, type-M power jack. At Delptronics, we are partial to
the Boss PSA-120S, however, just about any standard 9V pedal power supply will work.
The LDB-1se has reverse voltage protection, so if you plug in a center-positive power plug, it will not work,
but will not cause any damage. Plugging in a supply that is over 12V will damage your drum machine.
Audio Out
The audio output is a mono 1/4" jack. If you insert a stereo plug, it will still work, but you will only get
sound out of the left channel.
Analog Connectors
The
Trigger Out
,
Clock Input
, and
Reset/Gate Input
jacks are mono 3.5mm (1/8") jacks. They are used for
connecting your LDB-1se to a modular synthesizer, or sequencer.
Trigger Out
The trigger output voltage is equal to the power supply voltage, nominally 9 volts. 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-1se will still work fine, but the trigger output will be slightly higher or lower. That should not affect
most modular synthesizers.
Clock Input
The Clock Input jack accepts a 1 to 15-volt signal from a modular synthesizer or sequencer. So, you can
control the tempo of the LDB-1se from another device, or use a master clock module to control multiple
devices, including the LDB-1se.
Reset/Gate Input
The Reset/Gate Input jack accepts a 1 to 15-volt signal from a modular synthesizer or sequencer. When
configured as reset, a positive going pulse resets the playing pattern/song to the beginning. When config-
ured as a gate, a voltage makes the pattern(s) play, and zero volts makes them stop. Configure it as a gate
to use DINsync.
DINsync Input
DINsync is a standard used by older drum machines, primarily from Roland. DINsync provides a clock signal
and a gate (on/off) signal. The same jack is used for DINsync or MIDI, so you cannot use both functions at
the same time.
The clock pin and the gate pin on the DIN jack are connected to the 3.5mm clock input and reset/gate
input jacks, but they are switched. So, if you plug into the 3.5mm jack, the signal is disconnected from the
corresponding pin on the DIN jack.
