"The synth has been professionally serviced but there are still a few issues:
-There are 6 touch pads to the left of the keyboard. The two for filter do not work, and the two for vibrato only work intermittently
-The volume slider is also intermittent(there is also another volume knob that works fine)
-One knob is not original
This is an extremely rare find, and has one of the most unique filters I have ever had the opportunity to play with."
Note the level indicators on the top of each section.
"The Freq. knob controls two VCOs inside and makes noisy fat sound.
The VCOs go to VCF which is the analog synth low pass filter(cut off frequency and resonance).
The envelope generator can be used as a LFO can makes lots of shapes of vibration.
Set the shapes of vibration with attack and release ,and repeat it or 1 shot.
6.35mm(1/4 inch) audio Jack
2.1mm 9V DC input(NEGATIVE CENTER)or a 9V battery
Please be sure to use DC(NOT AC)9V NEGATIVE CENTER(NOT POSITIVE).If you are not sure,please ask me anything because the wrong polarity of the adaptor will break the device. "
FREQ.A,B,C,D ,MOD.1,and MOD.2 control some oscillators and make cool sound.
LFO.1 and LFO.2 make weird waves for FREQ.A,B,C,D .
STAB controls the depth of LFO.1 and 2.
This has the noisy pulse circuit inside and make the sound distorted.
The black switch reduce the voltage while pushing it.
6.35mm(1/4 inch) audio Jack
2.1mm 9V DC input(NEGATIVE CENTER)or a 9V battery
Please be sure to use DC(NOT AC)9V NEGATIVE CENTER(NOT POSITIVE).If you are not sure,please ask me anything because the wrong polarity of the adaptor will break the device. "
"This is the analog circuit drone machine noise box.
4 OSCILLATORS inside have each FREQUENCY KNOBS and ON/OFF(mute)switch.
The tone of FREQ.A and B can be changed with TONE.A.And volume of FREQ.A and FREQ.B control withVOLUME.A.
The tone of FREQ.C and D can be changed with TONE.B.And volume of FREQ.C and FREQ.D control withVOLUME.B.
BALANCE KNOB controls the balance of VOLUME.A and VOLUME.B.
6.35mm(1/4 inch) audio Jack
2.1mm 9V DC input(NEGATIVE CENTER)or a 9V battery
Please be sure to use DC(NOT AC)9V NEGATIVE CENTER(NOT POSITIVE).If you are not sure,please ask me anything because the wrong polarity of the adaptor will break the device."
Published on Jan 29, 2013 Jason Hotchkiss·115 videos
"This is a kit I have developed from a previous project. The original idea was a gizmo for MIDI jam sessions where several musicians might share a common beat clock accessible to all. The same device also does a 6-way MIDI thru/split so its a pretty handy thing to have.
On board there is a PIC16F688 MCU, a 6N138 opto-isolator and a 4050 six-way non-inverting buffer chip. The PIC handles both the beat clock and the MIDI thru, so there is no contention between the two. Power is via a mini USB socket.
I decided to get some PCBs made up and make an inexpensive kit available on Tindie.
https://tindie.com/shops/hotchk155/midihub-6-way-midi-thru-and-metronome-module/"