Jacob Korn

Mods & repairs

Posted by in mods & repairs

If you are interested in modifications of your analog gear or you want to control your 70’s and early 80’s machine with MIDI it might be possible to put a retrofit into it. check out the list of possible upgrades and videos of my midified and heavily modified analog synths and drum machines. I am a graduate engineer for media technology (Dipl. Ing.). Please ask for pricing of your individual project. CONTACT kits for the following manufacturers are available: ROLAND, MOOG, YAMAHA, ARP, KORG, KAWAI, CASIO, SEQUENTIAL CIRCUITS, OCTAVE, OBERHEIM, JEN, SOLINA, LINN,…read more

Jacob Korn EB Slices Tech Talk

Posted by in Education, mods & repairs, News, Studio, Videos

Jacob Korn takes Telekom Electronic Beats TV into his studio for a Tech Talk with a difference. Watch as Jacob demystifies the seemingly complex world of modifying synthesisers and drum machines. In addition, to Korn’s wisdom, you will also hear 2 demos of what a few modifications can do to your gear, be it Roland, Yamaha or any other brand. Check out www.jacobkorn.de/studio for more infos on mentioned projects!


Danelectro Spring King mod

Posted by in equipment, mods & repairs, Studio

The Danelectro Spring King is a small spring reverb, but there’s also a slapback delay in it, using a PT2399S chip. Thanks to some documentation on the internet I could easily mod the reverb to control the delay. The idea is to be able to get only the reverb signal if we want, and in a general way to take advantage of the delay by changing the Time and Feedback as we feel.Control Delay Time: Between PIN6 (VCO) and Ground, there’s a CMS resistor „362“ (3,6k). Once it’s taken off…read more

Pearl DRX-1 tune + decay mod triggered by TR-606 (poor man´s Syncussion)

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

Duration 6h for Mods: 300€ + parts (knobs+housing) + postage (german clients + 19% tax) Stereoping pointed out some interesting mods for this VCR-looking analog drum beast. Since I like the idea of saving kits i focussed on parameters like tune and decay for real-time control. Triggering those 5 voices by my modded TR-606 with multiple outputs. Great fun! Thx for the nice documentation! http://www.stereoping.com/pearl-drx-1-drumsynth/?lang=en The Pearl DRX-1 has 5 Instruments which can be triggered by drum pads. Of course, you can also feed some trigger signals into it. All…read more


Roland Space Echo RE-200 Sound on Sound mod+restoration

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

Got this earlier version of the RE-201 in a very bad shape. After a lot of hours, it´s alive again. Replaced all pots and connections, recapped the power supply and adjusted the tape transport that caused a lot of issues. thx to Jacob Stoy who borrowed his RE-200 for troubleshooting. check out the „sound on sound“ mod! quite noisy but fun unit!!!           https://youtu.be/VJ9MP76cpNM