Oh, my bad. For some reason, i always thought, that OPL3 can do 9-voice polyphony in 4OP mode, 18 in 2OP or 6 2OP + 6 4OP. Now i read Wikipedia article thoroughly and turn out, that the number of 4OP channels cannot be greater than 6. This sucks :(. But, can be MIDIbox FM V2.0 firmware and PCB files …

No, it definitely exist. Some time ago (prior to making this thread) i found this . The video description says: MIDIbox FM V2.0 is a homebrew 36-voice FM synthesizer based on two Yamaha OPL3 (YMF262) sound chips The video description even have a link , but i unable to find firmware and PCB files for …

I'm not sure, how the Arduino can help me with programming. It's just a development board for a AVR microcontroller. Also, my musical abilities sucks just like the programming skills. To create musical synthesizer firmware, knowledge of musical theory most likely needed. The weak documentation for …

All those old Yamaha keyboards and modules are not easy to find in Russia, and even if i manage to find one in Russia, it will be most likely overpriced (compered to what it cost abroad). Even abroad, they will be likely not cheap, also, the keyboards are bulky and heavy, so the shipping cost likely …

Even when using vintage Yamaha FM modules from the same family, patches cannot always be moved from one synth to another without changing some settings. Yamaha had two "main" families of FM chips - OPM\OPN and OPL. All OPN chips have the same set of FM parameters and their patches are compatible …

How about the xfm2 ? Interesting project, but looks like the author only made it on prototyping board and not routed any PCB. Also, i thought about a synth, which would use a Yamaha chip, not FPGA. The custom implementation of FM synthesis means, that instruments made for Yamaha chips cannot be …

Are there any open hardware (with PCB files and firmware binaries available for download) MIDI FM synth modules? Requirements: 1. At least 16-voice polyphony in four-operator mode. 2. Ability to change instruments banks (the instruments bank format must be editable on computer). 3. Ability to switch …