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@... > 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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