Version OS 1.0
2 Connection
Please use the ALPHA BASE in dry rooms only, with a temperature no higher than 35° C
(95° F).
On the back panel of the casing you will find the following connections:
2.1.1 Power Supply
Please connect the provided wall wart adapter to the line and hook it up to the supply
jack 12V= DC IN on the ALPHA BASE. If, for any reason, you are not able to use the
original power supply, please use a DC adapter with 12 Volts and at least 2 amps.
Never use an AC/AC adapter as the ALPHA BASE might get damaged!
2.1.2 Audio connections
Please turn off the ALPHA BASE and the mixer.
The ALPHA BASE has a stereo main output that mixes all instruments. If you plug in a
cable to an individual output, this instrument is removed from the stereo mix.
All audio outputs including the individual outs are balanced and deliver a level of max
20dBu. Please connect the audio outputs with ¼” stereo audio cables to the audio
inputs of your mixer. Most mixers can handle these balanced inputs.
2.1.3 USB Connection
The USB input is just used for Midi via USB. No drivers are needed as it uses generic
drivers for Midi USB devices that are part of every modern computer OS. Just connect
the Alpha Base with a normal USB cable to the computer, and the computer will
recognize the USB device and install the driver automatically.
Please note that the Alpha Base is not USB powered and always needs to be turned on
before a USB connection gets established.
Every instrument receives and transmits midi on its own channel in ascending order. It
starts with the kick drum = CH 1 and ends with the FM synth = CH 11.
CH 16 is reserved as a global channel where the Alpha Base receives all instruments
mapped on the keyboard. See Appendix for more information.
14
ALPHA BASE Operating Manual
