Korg Poly800/EX800 Users

Mike -- I still have my pristine unmodded Poly-800II and you have peaked my interest...

1) User-installable wavetables. Waldorf-style wavetable modulation.
2) User-installable multisamples. Some mellotrons through that filter would be fantastic!
3) Multiple oscillators per voice when using 8 (or more) voices.
4) Of course anything analog would be sweet, but you could definitely do better on the DCOs and cheaply!

Here are some other non-oscillator mods I'd get into:

4) MIDI synchable/tap tempo on the delay. Realtime effect controls.
5) Install keyboard from a Korg 707 for velocity and aftertouch.


On Oct 19, 2012, at 1:43 PM, Michael Hawkins wrote:

> 
> I am considering adding something new to the Poly-800.
> 
> I am thoroughly disappointed with the Poly-800 DCO's.
> 
> 1) The square wave output is OK but the sawtooth is horrible. It's much more of a slightly saw-ish square.
> 2) the detuning is pathetic. The detune circuit doesn't actually detune in the true sense. It just moves the DCO's 5-7 out of phase with DCO's 1-4.
> 3) There's no adjusting the wave shape at all. The adding and removing of harmonics is extremely rudimentary.
> 
> Now is the time for people to make suggestions for what they might like if I added new oscillators.
> 
> Keep in mind...
> 
> 1) cost - cheap, cheap, cheap - try to keep the kit under $100 probably closer to $50.
> 2) complexity - simple - the kit is for modder's with simple electronic skills.
> 3) low time to develop - the full blown solution would be to use an FPGA to create waveforms. Sorry, not going that route because I don't have the time. Unless someone else can convince me that FPGA programming is going to be easy and require little time on my behalf.
> 
> Question: is anyone aware of a top octave generator still being manufactured that is similar to say the SGS M082 or the other various TG's that were widely used in the 80's? I can't find one but a simple design I have cooking would require a top octave generator.
> 
> Or, if anyone is aware of a low cost music synthesis chip I could use, please make suggestions.
> 
> The idea would be to disable the existing DCO's (under HAWK control) and enable an entirely new set of oscillators/sound generation to be injected into the audio path before the filter. I am not looking to spend much time on this. But I really would like to expand the Poly sound capabilities at the beginning of sound path. 
> 
> Mike
> 
>