K5synth

My BB opamps did help a lot, but there is still noise.  You will be
able to add filters, that is interesting.  Please tell us how it goes.
PM if you need any help with the schematics. 


--- In k5synth@yahoogroups.com, Antoine Deschênes <antdes45@y...> wrote:
>
> Yeah, about your OPA4134 mod, I don't remember if you told the 
> improvement was big or small.
> 
> Since the free samples I've got from TI are SMD, I will have to
build an 
> adapter. It's harder to solder, but I could put some filtering 
> components on the adapter board. Yay!
> 
> Also, something interesting to build would be one of the uCapps.de 
> (MIDIBox) projects and control some filters with it. I wonder what a 
> Moog filter on a K5 sounds??
> 
> nelsonj_sce a écrit :
> 
> >I recently got a Roland MKS70 and figured out how to mod it so I can 
> >run (6) external signals through its filters/VCA/Chorus.  I am 
> >running the four outputs of the K5 through the MKS70 with the MKS70 
> >in "mono mode" (Guitar synth mode).  By filtering the K5 midi output 
> >through my computer and MidiOX, I can send different parts of the K5 
> >keyboard to different midi channels, and then on to the filter of my 
> >choice in the MSK70.    
> >
> >The result: Different notes on the K5 trigger their own filters.  It 
> >is a true 4-voice poly board.  If I trigger more than four voices, 
> >several notes go through the same filter in a paraphonic (?) mode.
> >
> >In my opinion it sounds fantastic!!!  Just think about it, the K5 
> >additive OSCs, stacked into multi layers, and then run through  the 
> >very decent ANALOG filters/VCA (and Chorus)of the MSK70 (filters are 
> >24db with Resonance and self-oscillation).  I can also add 2 
> >additional DCOs (square/pulse/saw/noise) from the MKS70 - this helps 
> >add some much needed low end to the K5, or whatever else I want (like 
> >noise).  Think PPG 2.3 and a very rich sound.  The analog filters 
> >just add so much life and beef to the K5 - I love it!
> >
> >I will try to record some MP3 (K5 solo, K5 with DCOs, K5 with 
> >DCOs+Filters, K5 with DCOs+Filters+Chorus).  Note that I upgraderthe 
> >op-amps in my K5 to Burr/Brown, did the 147k resistor mod,and this 
> >helps out also, but the filters are what really does the trick.
> >
> >I am in love with the sound and have spent hours and hours playing 
> >with the K5 through the MKS70.  My BCR2000 is programed to control 
> >all the MKS70 settings so tweaking is very easy. 
> >
> >I hope to post some sounds in a week or so.  Stay tuned...  
> >  
> >
>