Jacob Korn

Apr.25
0

Korg Polysix repair+mod+MIDI

Posted by in KORN HARDCORE CUSTOMS, mods & repairs, News

Got this baby in very bad nonworking condition. Had to replace the processor board (battery leakage) with a cloned version and to source 12 new SSM chips. It got also MIDI plus an input for using the internal chorus FX now. After cleaning its looking brand new. A nice 5k pot replacing R116 near IC31 will increase the unison detune! http://synthhacker.blogspot.de/2013/04/polysix-adding-detune.html Thx so much to Curetronic.com and Malte Rogacki for helping with the reanimation:)

Apr.25
0

BOSS CE-1 modifikationen nicht öffentlich

Posted by in mods & repairs, News

Fairly simple modification to my favourite chorus device. Its possible to use the depth of the vibrato section for the chorus as well now (or switch it back to original). I can perform this mod for your pedal as well! Please contact me here: www.jacobkorn.de/contact Mods: 200€ + parts (knobs+housing) + postage (No VAT (small business §19 (1) UStG))            The sound is a dx7 string patch btw. Input impedance mod: Replace the 50k volume pot with a 500k log and for R11 ( 470k) 1M in parallel (=319k). Duration:…read more

Apr.19
0
Nov.19
1

Yamaha E-75 Son Of GX modification

Posted by in KORN HARDCORE CUSTOMS, mods & repairs, Studio

Got this organ with guts from the infamous GX-1 and the CS80. After the modification we got full access to the 2 polysynths (7 voices 2 OSC and LP+HP filter each) and the monophonic bass synth. 3 times 16 controls in total: 4 Filter controls (Low pass filter frequency, Low resonance, High pass filter frequency, High pass resonance) 5 stage Filter Envelope Generator (Initial Level, Attack level, Attack, Decay, Release) 4 stage Voltage Controlled Amplifier Envelope Generator (Attack, Decay, Release, Sustain) 3 waveforms possible for use in parallel (saw, square, narrow pulse) CV-control for…read more

Nov.19
1
Okt.12
0

Oberheim Matrix 1000 1.16 rom upgrade

Posted by in equipment, mods & repairs, News, Studio

Oberheim Matrix 1000 EPROM chip, operating system version 1.16. The last official version released by Oberheim was 1.11; this version corrects some MIDI SysEx control issues that Oberheim overlooked, such as a really slow response to filter cutoff frequency settings. This replaces chip U804 on the main board (it is socketed, so no soldering is required). Took about 30min. – Bug fixes made by Nordcore. – MIDI NRPN parameters editing fix. – Faster processing of parameter changes that need a modulation matrix rebuild, there’s still a small lag but it’s…read more

Okt.12
0
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