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CGS64 VCA - Initial Gain Pot wiring question.

CGS64 VCA - Initial Gain Pot wiring question.

2013-10-14 by Stephen Richards

Hi Ken and all

I'm wiring the VCA on the (Dmitri) Vintage Voltron Panel #1.

As this VCA is implemented with 2 x CV inputs i'm not sure how to wire this.

Do i just follow the Initial Gain Pot wiring on your CGS64 VCA build page and then link the two CV inputs and send them to the remaining CV Input pad on the PCB ?

The wiring on the build page is representing one normal CV input jack and one Inverted CV input jack.

Re: CGS64 VCA - Initial Gain Pot wiring question.

2013-10-14 by cg_synth

Look at the circuit diagram. From there you will see it is possible to add
extra CV inputs by connecting them via an extra 100k resistor per input to
the CVSN pad.

Ken
Show quoted textHide quoted text
>Hi Ken and all
>
>I'm wiring the VCA on the (Dmitri) Vintage Voltron Panel #1.
>
>As this VCA is implemented with 2 x CV inputs i'm not sure how to wire this.
>
>Do i just follow the Initial Gain Pot wiring on your CGS64 VCA build page
and then link the two CV inputs and send them to the remaining CV Input pad
on the PCB ?
>
>The wiring on the build page is representing one normal CV input jack and
one Inverted CV input jack.
>
>
>
><head>
>
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> }
> /* end of attachment style */
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> </style>
> </head>
><html><body>
>
>
><!-- |**|begin egp html banner|**| -->
>
><br><br>
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>
>
><div style="color:#000; background-color:#fff; font-family:HelveticaNeue,
Helvetica Neue, Helvetica, Arial, Lucida Grande,
sans-serif;font-size:10pt"><div>Hi Ken and all</div><div><br></div><div
style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue,
'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;
background-color: transparent; font-style: normal; ">I'm wiring the VCA on
the (Dmitri) Vintage Voltron Panel #1.</div><div style="color: rgb(0, 0, 0);
font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica,
Arial, 'Lucida Grande', sans-serif; background-color: transparent;
font-style: normal; "><br></div><div style="color: rgb(0, 0, 0); font-size:
13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial,
'Lucida Grande', sans-serif; background-color: transparent; font-style:
normal; ">As this VCA is implemented with 2 x CV inputs i'm not sure how to
wire this. </div><div
> style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue,
'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;
background-color: transparent; font-style: normal; "><br></div><div
style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue,
'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;
background-color: transparent; font-style: normal; ">Do i just follow the
Initial Gain Pot wiring on your CGS64 VCA build page and then link the two
CV inputs and send them to the remaining CV Input pad on the PCB ?</div><div
style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue,
'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;
background-color: transparent; font-style: normal; "><br></div><div
style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue,
'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;
background-color: transparent; font-style: normal;
> ">The wiring on the build page is representing one normal CV input jack
and one Inverted CV input jack.</div></div>
>
>
>
><!-- |**|begin egp html banner|**| -->
>
><br>
>
>
><br>
>
><!-- |**|end egp html banner|**| -->
>
>
><div width="1" style="color: white; clear: both;"/></div>
></body></html>
_______________________________________________________________________
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>

Re: CGS64 VCA - Initial Gain Pot wiring question.

2013-10-14 by Stephen Richards

Thanks Ken.

Yes , after i sent the last mail , i looked at the Schematic and came to a similar conclusion.

Would it work to run the two CV Inputs to the CV In pads then the Initial Gain pot Wiper to the CVSN pad via a 100K resistor ?

They al seem to join up at the same point in the schematic.
Show quoted textHide quoted text


On Monday, October 14, 2013 8:13 PM, "sasami@..." <sasami@...> wrote:
Look at the circuit diagram. From there you will see it is possible to add
extra CV inputs by connecting them via an extra 100k resistor per input to
the CVSN pad.

Ken

>Hi Ken and all
>
>I'm wiring the VCA on the (Dmitri) Vintage Voltron Panel #1.
>
>As this VCA is implemented with 2 x CV inputs i'm not sure how to wire this.
>
>Do i just follow the Initial Gain Pot wiring on your CGS64 VCA build page
and then link the two CV inputs and send them to the remaining CV Input pad
on the PCB ?
>
>The wiring on the build page is representing one normal CV input jack and
one Inverted CV input jack.
>
>
>
><head>
>
><style type="text/css">
><!--
>
>/* start of attachment style */
> .ygrp-photo-title{
> clear: both;
> font-size: smaller;
> height: 15px;
> overflow: hidden;
> text-align: center;
> width: 75px;
> }
> div.ygrp-photo{
> background-position: center;
> background-repeat: no-repeat;
> background-color: white;
> border: 1px solid black;
> height: 62px;
> width: 62px;
> }
>
> div.photo-title
> a,
> div.photo-title a:active,
> div.photo-title a:hover,
> div.photo-title a:visited {
> text-decoration: none;
> }
>
> div.attach-table div.attach-row {
> clear: both;
> }
>
> div.attach-table div.attach-row div {
> float: left;
> /* margin: 2px;*/
> }
>
> p {
> clear: both;
> padding: 15px 0 3px 0;
> overflow: hidden;
> }
>
> div.ygrp-file {
> width: 30px;
> valign: middle;
> }
> div.attach-table div.attach-row div div a {
> text-decoration: none;
> }
>
> div.attach-table div.attach-row div div span {
> font-weight: normal;
> }
>
> div.ygrp-file-title {
> font-weight: bold;
> }
> /* end of attachment style */
> -->
> </style>
> </head>
><html><body>
>
>
><!-- |**|begin egp html banner|**| -->
>
><br><br>
>
><!-- |**|end egp html banner|**| -->
>
>
><div style="color:#000; background-color:#fff; font-family:HelveticaNeue,
Helvetica Neue, Helvetica, Arial, Lucida Grande,
sans-serif;font-size:10pt"><div>Hi Ken and all</div><div><br></div><div
style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue,
'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;
background-color: transparent; font-style: normal; ">I'm wiring the VCA on
the (Dmitri) Vintage Voltron Panel #1.</div><div style="color: rgb(0, 0, 0);
font-size: 13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica,
Arial, 'Lucida Grande', sans-serif; background-color: transparent;
font-style: normal; "><br></div><div style="color: rgb(0, 0, 0); font-size:
13px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial,
'Lucida Grande', sans-serif; background-color: transparent; font-style:
normal; ">As this VCA is implemented with 2 x CV inputs i'm not sure how to
wire this. </div><div
> style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue,
'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;
background-color: transparent; font-style: normal; "><br></div><div
style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue,
'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;
background-color: transparent; font-style: normal; ">Do i just follow the
Initial Gain Pot wiring on your CGS64 VCA build page and then link the two
CV inputs and send them to the remaining CV Input pad on the PCB ?</div><div
style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue,
'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;
background-color: transparent; font-style: normal; "><br></div><div
style="color: rgb(0, 0, 0); font-size: 13px; font-family: HelveticaNeue,
'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif;
background-color: transparent; font-style: normal;
> ">The wiring on the build page is representing one normal CV input jack
and one Inverted CV input jack.</div></div>
>
>
>
><!-- |**|begin egp html banner|**| -->
>
><br>
>
>
><br>
>
><!-- |**|end egp html banner|**| -->
>
>
><div width="1" style="color: white; clear: both;"/></div>
></body></html>
__________________________________________________________
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>



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