Doepfer SK2000 Midi Masterkeyboard (device no longer available) - Manual (Page 6)

Page 6 SK2000 User's Guide
Connections at the rear panel
From right to left:
Power supply (9V DC)
The SK2000 does not have a built-in power supply. Instead it uses a plug-in type external power supply (DC
adapter). The connector is labelled 9V DC. The primary reason for this feature is the fact that line voltages
and plug types vary considerably from country to country. Using a plug-in external supply the SK2000 can be
used anywhere with a locally purchased power supply, thus keeping the cost down.The SK2000 is switched
ON by plugging the supplied AC adapter into a wall outlet and connecting it to the appropriate jack on the
back of the case. There is no separate ON/OFF switch. The SK2000 includes an AC adapter for 115-230V
mains supply with a European type mains plug.
In countries with different mains plug types or voltages a suitable power supply has to be purchased locally
by the user. The power supply must be able to deliver a voltage of 9 VDC (stabilized), as well as a minimum
current of 800mA.
Attention: Using a non-stabilized power supply will cause hum noise on the audio lines (audio out at the
rear panel and headphone output at the left front panel).
If the polarity of the power supply is incorrect, the SK2000 will not function. However, there is no danger of
damage to the circuitry since it is protected by a diode. If you are not using the power supply shipped with
SK2000 the following diagram shows the pinout of the SK2000 power jack. An XLR type 3 pin female
connector is used.
Audio out
This is a ¼ " stereo jack socket to connect the audio output to the mixer, amplifier, PA or similiar.
Note:
The headphone volume control at the left front panel does not affect the level of this output.
MIDI out
Next to the audio output you will find the MIDI Out socket. Connect the MIDI output of the SK2000 to the MIDI
input of your MIDI device (e.g. synthesizer, expander, sampler, computer) using a suitable MIDI cable when
you wish to control another MIDI device from the SK2000. If you want to use only the internal sound
generation of the SK2000 this connector does not need to be used.
1 2
Power Supply
1 = +9V DC / 800mA
stabilized !!!
2 = GND