Tubbutec ModyPoly Installation Manual

Midi retrofit and feature extension

Table of Contents

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Midi retrofit and feature extension Rev.3

NOTE: this is the installation manual for ModyPoly Rev.3.

You can find the text 'rev3' on the bottom of the ModyPoly

chip!

Tools you will need:

• Soldering iron

• Metal drill 3.2mm (or similar)

• Metal drill for a 15mm hole (stepping drill for example)

• Center punch

• Screw driver

• ModyPoly chip

• 34K and 68K resistors

• Midi socket drill guide

• 4x M3 bolt, 4xM3 nut for midi sockets

• Sticker for midi socket labelling

Tubbutec ModyPoly

Installation Manual for Korg Polysix

http://tubbutec.de

Table of Contents

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Page 1 Midi retrofit and feature extension Rev.3 Installation Manual for Korg Polysix http://tubbutec.de NOTE: this is the installation manual for ModyPoly Rev.3. You can find the text ’rev3’ on the bottom of the ModyPoly chip! Tools you will need: • Soldering iron •...
Page 2 Installation The ModyPoly is a drop in replacement for the ”key assigner” IC and thus very easy to install. Just plug and play basically. Three holes for the midi sockets and the sustain pedal jack have to be drilled in the back of the Polysix and if you want to be able to control the filter via midi there is one cable to solder.
Page 3 Polysix and remove the keyboard. In order to install the processor board you have to remove the existing processor (IC6 D8049C 217) and replace it with the ModyPoly chip. You can use a small screw driver to carefully lift the processor out of its socket.
Page 4 If you want to be able to control the filter via midi, you will have to solder one cable to the leg of a resistor (R51) on the back of the voice board (KLM-366B) as shown in the picture. The cable is the orange wire coming from the ModyPoly board.
Page 5 Soldering the pitch bend wire In order to add midi controlled pitch bend to your Polysix you need two resistors, one 68k one 34k. Other values are also possible, as long as one has double the value of the other. This will change the maximum pitch bend range.