[sdiy] Hohner Electronic Piano

[Bob Weigel]

Thanks for the note on that.  I'll have to try to get one working some 
day.  I fixed the old Roland EP10 we got in the buyout from Tucson 
already and it was a pain.  120 of parts/labor on that one but it works 
great now.  Board was broken underneath, one coil was shot and lots of 
cleaning and some wood repair. 

Anyway we got a couple of the International Pianos and some other Hohner 
stuff.  Paul is going to keep the D6 so don't ask on that I guess :-).  
But the other stuff he might part with some of it if someone makes a 
reasonable offer. -Bob

Gregtronic wrote:

> Hey all.  I just got a Hohner International Electronic Piano.  It has  
> two sounds which are piano and harpsichord which both sound cool  
> especially when you mix them together.  Also it has a nice vibrato  
> function which has control over the speed.  Of course the moment i  
> got this, my mind starts wandering to cool ways i could mod this.  It  
> would be great if i could access the filter(s) to add controls, the  
> vibrato so i could adjust depth, and if i could modify the envelope.   
> The first two mods would be simpler than the envelope mod.  Because  
> the synth uses frequency dividers, there's an envelope for each  
> individual note.  But i'm thinking if i could just got a constant  
> sustain signal, i could use a volume pedal and have a pretty sweet  
> string synth.  That, added with the controls for the filter and vibrato.
>
> Of course, without the schematics i'm pretty much hopelessly lost at  
> this point, as i have never even attempted to reverse engineer  
> anything, so i'm saving that for my last possible choice.  Does  
> anyone happen to know if there are schematics or a service manual  
> around for these?  There's not much information on the internet as it  
> is about these guys.  Also, are my mods even realistic/possible/worth  
> it?  Any help or information anyone has would be greatly appreciated.
>
> Cheers!
>
> -Gregory
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