Doepfer

i'm gonna try it tonight!

"i think i can figure that out" :)


thanks Peter
cheers
t


On 08/11/05, (i think you can figure that out)
<peter@buzzclick-music.com> wrote:
>  This may be the only mod which will take you less time to do
>  than it will to read this letter.  I could have *sworn* i had already
>  posted this...i actually remember typing it, but possibly old age
>  has effected my memory along with my sexual stamina.
>
>  Anyway, if i have posted this and for osme reason I just can't find
>  it, please forgive the aged of the list.
>
>  You can convert one (or both if you care to) of the A-114 Ring
>  Modulators to DC coupling with a single solder bridge.  Takes
>  about a second.  It will give you DC coupling capability - in short,
>  the Y input wil now accept DC voltages, making your A-114 a
>  VCA (footnote required - see below). At very least it does also
>  give timbral differences from the AC coupled half (you get both
>  the X and Y sum frequencies I believe with DC coupled
>  multipliers).  Totally worth the one minute it'll take to do it.
>
>  Here's how!
>
>  1) Take your unit out.  No, not THAT unit...the A-114.
>
>  2) You'll notice two capacitors on the board in which the long
>  dimension of their case is parallel to the faceplate.  One is for
>  the top half, one is for the bottom.  All you have to do is bridge the
>  two contacts of that cap and you're done.  You don't even have to
>  remove the component.  It doesn't get any easier than that, babe.
>  You can do this with just a solder bridge or by running a
>  component lead across the two contacts and soldering that in
>  place.  I happen to be rich in cut component leads around here,
>  so i opted to do it that way.  One less to sweep up at the end of
>  the day.
>
>  The differences between the AC and DC rings are significant.  I
>  keep one as is and mod'd the other.  There's room on the
>  faceplate to add a switch so that it could be selectable between
>  the two states, but with two rings in one module it doesn't seem
>  practical to do that.
>
>  (footnote:  The DC response of the DC coupled Y input is
>  inverted (180 degrees out of phase with the input)  In short, if you
>  were using this as a VCA, the greater the voltage put into the Y
>  input, the more attenuation at the output (output gets softer).
>  Usually it's the other way around.  No big deal, the sonic
>  characteristic of the DC Ring is still worth it.  If you wanted to get
>  fancy, you *could* add an inverting op amp or discrete transister
>  inverter bwteen the Y input and the cap to put the control
>  response back into phase - that's up to you.)
>
>  Try this one - you'll like it.  And again if for some reason I have
>  already posted this and just kind find it....be kind to the ancient
>  (and stupid) among us, namely me.
>
>  - P
>
>
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