Korg Poly800/EX800 Users

Hi, I succeeded at least!
Things work well now: the sync signal from poly-800 leads the Boss DR-110 acidlab sync-in interface. As I supposed in another message that interface needed a start/stop signal on the other pin to work, just like other drums machines like korg KPR-77, while stuff like Roland TB-303 didn't need (as far as I can remember): so I used 3 x 1,5 volts batteries in series for that purpose. It seems like acidlab's interface has a logical buffer inside (a 74HCT74 ?) similar to the one you suggested but it should do the additional job of dividing external 24ppqn sync to match internal 12ppqn. So I safely connected it to poly-800 extracted sync-out directly and (courtesy of the start/stop circuit switch) now it works.
I'm thinking about finding a way to mod acidlab's interface to exclude buffer's internal divider and let it easily switch from native "external divided-by-two 24ppqn to internal 12ppqn" mode to an "external buffered-only 24ppqn to internal 12ppqn" mode: it should be an easy way to double drum machine tempo by a simple switch.
But I wouldn't be daring too much... :D


--- In korgpolyex@yahoogroups.com, Atom Smasher <atom@...> wrote:
>
> On Thu, 16 Jul 2009, Michael Hawkins wrote:
> 
> > A 74HC04 is an exact equivalent.
> >
> > http://mouser.com/Search/ProductDetail.aspx?qs=sGAEpiMZZMutXGli8Ay4kNQoxOz2kMipooItkeg7TPE%3d
> >
> > But like I said, this might not work unless you work out the electrical 
> > requirements for the interface that you are trying to sync to.
> =================
> 
> off the top of my head, the 74xx should be more robust than the 40xx, 
> especially when interfacing to other stuff. IIRC, it should handle higher 
> output current and be more resilient to ESD.
> 
> 
> -- 
>          ...atom
> 
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