![Thomas Henry's MPS: Front view](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2021/06/MPS_front-1024x1004.jpg)
This is my take on the Mega Percussion Synthesizer designed by Thomas Henry. With many thanks to Thomas who kindly gave me the permission to publish it here for DIY. I have made two minor changes which I found useful. First I added input buffers to all four sections of the circuitry, because this eliminates the influence of the potentiometer adjustment to each other. And I changed the circuitry around the CV input and the impact/noise switch. The CV input is now added to the impact/noise switch, with a neutral middle setting for the original behavior. The locked mode is left out.
Specs and features
- Same as the original
- Runs on +/-15V and +/-12V
- Power consumption around 35mA each rail
The documentation and the Gerber files for download can be found in my website (link).
![Thomas Henry's MPS: Schematic control board](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2021/06/MPS_101_F_schematic.png)
![Thomas Henry's MPS: Schematic main board](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2021/06/MPS_101_B_schematic-1024x708.png)
![Thomas Henry's MPS: Populated control board](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2021/06/MPS_control_PCB-1024x847.jpg)
![Thomas Henry's MPS: Populated main PCB](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2021/06/MPS_main_PCB-830x1024.jpg)
![Thomas Henry's MPS: Back view](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2021/06/MPS_back_view-689x1024.jpg)
![Thomas Henry's MPS: Side view](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2021/06/MPS_side_view-407x1024.jpg)