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Message

Re: 800 time

2003-05-14 by paulhaneberg

I was planning on adding a 3 position toggle to my 800s, allowing 
for three caps to be selected.  The middle range would use the 
3.3uf.  I was going to use a 10uf for the long range.  I hadn't 
selected a cap for the short range yet.  I was thinking about a 1uf, 
but I may go a little smaller depending on how fast I want to get.  
I will probably get some stooge panels made for my 800s as I am 
thinking of adding some other mods as well.  I'm playing with a 
design for a voltage controlled trigger/gate delay and also with the 
idea of enabling the 800 to retrigger itself so that it would act as 
sort of a LFO.  I have not decided how much of this to incorporate 
into a modified 800.  I may just make stand alone addons.
BTW, I was planning on replacing C9 with the smallest cap and then 
adding the other caps in parallel when the toggle is switched.  That 
way I could use a three position center off toggle, but I'm unsure 
whether this will create a leakage problem.

--- In motm@yahoogroups.com, media.nai@r... wrote:
> At 3:45 PM -0500 5/13/03, Paul Schreiber wrote:
> >Well, the faster/slower times apply to BOTH extremes.
> >
> >Increasing C9 allows longer Releases, but the minimum Attack is
> >proportionally  *longer*.
> 
> Yes, it would take longer to both charge and to discharge with a 
larger
> value.  I was thinking of two "modified" versions:  one with a 
smaller
> value for extra snappy short percussive envelopes with a finer 
attack
> control, and another with a larger value for long fades and sweeps.
> 
> >I found that 6.8uf seemed to be the ideal value, but couldn't find
> >any low-leakage non-polars in the correct voltage (needs to be 25V
> >or better).
> 
> What sort ofleakage specs does it require??  Digikey lists three
> different Xicon radial 6.8uF 50V non-polar and bi-polar caps in 
their
> catalog on page 265.
> 
> Also, is there a difference between non-polar and bi-polar??  The
> parts list says bi-polar and "B.P." is printed on the cap.  The
> schematic says "NP" and you are calling it non-polar here.
> 
> >I have several folks that have "stock" 3.3uf caps in 2 EGs and 
10uf
> >in 2 other ones for like 25 sec. Releases. But the price you pay 
is
> >a very narrow panel control range for "snappy" Attacks.
> 
> Perhaps these people should speak up and say which part they used!!

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