Yahoo Groups archive

SergeModular

Index last updated: 2026-04-28 23:13 UTC

Thread

TKB/VCM crosstalk?

TKB/VCM crosstalk?

2003-12-11 by jan-hinnerk.helms@t-online.de

Dear SMOG,

I finally made the step and now have my own Animal and a [TKB]. But on
running some first tests, I encountered the following phenomenon and
would like to ask you to confirm if this is normal or not.

In short: If I use a row of my [TKB] to control one section of my
[VCM], the clock pulses triggering the [TKB] and KP can be "heard" in
the audio running thru the [VCM].

To verify if this is the case on your system, here comes the very
simple patch:

- Patch [DTG] to cycle
- [DTG] Gate out to [TKB] clock in
- [TKB] KP to hold input of [TKB]
- [TKB] row D to VC in of [VCM] middle section
- [NTO] or [PCO] sine to [VCM] middle section In2
- [VCM] middle section out to [UAP], from there to monitor

- Set [NTO] or [PCO] to audio range, bass register works best
- Set [DTG] rise and fall controls so that [DTG] oscillates at 2 to 10
Hz
- Set [VCM] middle section VC pot to zero
- Press and hold any step on your [TKB]
- While holding the step, turn this steps's row D pot quite slowly from
zero upwards

Result on my system:

In between the positions 8 AM o'clock to 2 PM o'clock of the row D
pot, the clock signal triggering the [TKB] can be clearly heard
bleeding into the signal going thru the [VCM]. Below these positions,
the [VCM]'s effect is so weak or so strong, that this bleeding can not
be heard.

Please, set up this patch and test on you system, so that I can find
peace again (whether by knowing these is something wrong, or by
knowning that this is normal).

Thanks so much in advance,
Jan-Hinnerk

Re: TKB/VCM crosstalk?

2003-12-11 by john duval

Hmmm... well i patched this up and i get no bleed
through from the clock signal into the TKB through the
VCM. Are you properly grounded? bad patch cable? I'm
at a loss.Anyone else?? What i did discover though was
a truely righteous patch based on your set up.Dig this
:
VC clock to 11:00 or DTG to equivalent
Clk drives TKB but also a PDIV
stage three of the PDIV into HOLD of TKB
NTO sine to "in" 1 of VCM NTO is set to 10:00
NTO saw to "in" 2 of VCM... or you can flip them
VCM to VCFQX "in" with freq set to 1:00
use row D of TKB just like you did but stack output to
VCF "in" of filter also... set pot to just past 12:00
adjust row D of TKB to taste.
I just got a smokin' boogie shuffle out of this
patch.
I'm laughing my ass off. Thanks man!!!
Kind regards
John DuVal


Show quoted textHide quoted text

--- jan-hinnerk.helms@... wrote:
> Dear SMOG,
>
> I finally made the step and now have my own Animal
> and a [TKB]. But on
> running some first tests, I encountered the
> following phenomenon and
> would like to ask you to confirm if this is normal
> or not.
>
> In short: If I use a row of my [TKB] to control one
> section of my
> [VCM], the clock pulses triggering the [TKB] and KP
> can be "heard" in
> the audio running thru the [VCM].
>
> To verify if this is the case on your system, here
> comes the very
> simple patch:
>
> - Patch [DTG] to cycle
> - [DTG] Gate out to [TKB] clock in
> - [TKB] KP to hold input of [TKB]
> - [TKB] row D to VC in of [VCM] middle section
> - [NTO] or [PCO] sine to [VCM] middle section In2
> - [VCM] middle section out to [UAP], from there to
> monitor
>
> - Set [NTO] or [PCO] to audio range, bass register
> works best
> - Set [DTG] rise and fall controls so that [DTG]
> oscillates at 2 to 10
> Hz
> - Set [VCM] middle section VC pot to zero
> - Press and hold any step on your [TKB]
> - While holding the step, turn this steps's row D
> pot quite slowly from
> zero upwards
>
> Result on my system:
>
> In between the positions 8 AM o'clock to 2 PM
> o'clock of the row D
> pot, the clock signal triggering the [TKB] can be
> clearly heard
> bleeding into the signal going thru the [VCM]. Below
> these positions,
> the [VCM]'s effect is so weak or so strong, that
> this bleeding can not
> be heard.
>
> Please, set up this patch and test on you system, so
> that I can find
> peace again (whether by knowing these is something
> wrong, or by
> knowning that this is normal).
>
> Thanks so much in advance,
> Jan-Hinnerk
>
>


__________________________________
Do you Yahoo!?
Protect your identity with Yahoo! Mail AddressGuard
http://antispam.yahoo.com/whatsnewfree

Re: TKB/VCM crosstalk?

2003-12-12 by darkstr717

I sent this once but it didn't seem to get through
Hmmm... well i patched this up and i get no bleed
through from the clock signal into the TKB through the
VCM. Are you properly grounded? bad patch cable? I'm
at a loss.Anyone else?? What i did discover though was
a truely righteous patch based on your set up.Dig this
:
VC clock to 11:00 or DTG to equivalent
Clk drives TKB but also a PDIV
stage three of the PDIV into HOLD of TKB
NTO sine to "in" 1 of VCM NTO is set to 10:00
NTO saw to "in" 2 of VCM... or you can flip them
VCM to VCFQX "in" with freq set to 1:00
use row D of TKB just like you did but stack output to
VCF "in" of filter also... set pot to just past 12:00
adjust row D of TKB to taste.
I just got a smokin' boogie shuffle out of this
patch.
I'm laughing my ass off. Thanks man!!!
Kind regards
John DuVal










--- In SergeModular@yahoogroups.com, jan-hinnerk.helms@t...
wrote:
Show quoted textHide quoted text
> Dear SMOG,
>
> I finally made the step and now have my own Animal and a
[TKB]. But on
> running some first tests, I encountered the following
phenomenon and
> would like to ask you to confirm if this is normal or not.
>
> In short: If I use a row of my [TKB] to control one section of my
> [VCM], the clock pulses triggering the [TKB] and KP can be
"heard" in
> the audio running thru the [VCM].
>
> To verify if this is the case on your system, here comes the very
> simple patch:
>
> - Patch [DTG] to cycle
> - [DTG] Gate out to [TKB] clock in
> - [TKB] KP to hold input of [TKB]
> - [TKB] row D to VC in of [VCM] middle section
> - [NTO] or [PCO] sine to [VCM] middle section In2
> - [VCM] middle section out to [UAP], from there to monitor
>
> - Set [NTO] or [PCO] to audio range, bass register works best
> - Set [DTG] rise and fall controls so that [DTG] oscillates at 2 to
10
> Hz
> - Set [VCM] middle section VC pot to zero
> - Press and hold any step on your [TKB]
> - While holding the step, turn this steps's row D pot quite
slowly from
> zero upwards
>
> Result on my system:
>
> In between the positions 8 AM o'clock to 2 PM o'clock of the
row D
> pot, the clock signal triggering the [TKB] can be clearly heard
> bleeding into the signal going thru the [VCM]. Below these
positions,
> the [VCM]'s effect is so weak or so strong, that this bleeding
can not
> be heard.
>
> Please, set up this patch and test on you system, so that I can
find
> peace again (whether by knowing these is something wrong,
or by
> knowning that this is normal).
>
> Thanks so much in advance,
> Jan-Hinnerk

Re: TKB/VCM crosstalk?

2003-12-13 by jan-hinnerk.helms@t-online.de

Thanks John,

for checking this. Stripped my whole studio down to just the [TKB], the
Animal, the PS2 and a Mackie 1202 - looks properly grounded to the PS2.
Listening to it via headphones connected to Mackie. Still get this
clock bleed through. Argl. Waited for almost 10 years to get my Serge,
now this strange stuff. Guess I have to contact Rex.

On top of that, the [UAP] of my Animal seems strange too - please see
my other mail.

Thanks for listening,
Jan-Hinnerk

Re: TKB/VCM crosstalk?

2003-12-14 by Carbon111

> On top of that, the [UAP] of my Animal seems strange too - please
see
> my other mail.

I spoke to that point in my last mail...that part is perfectly normal
UAP behavior depending on gain settings the pan is clipped or
truncated in the middle as the gain knob actually performs two
functions:
http://groups.yahoo.com/group/SergeModular/message/2207

I hope you find your grounding gremlin! FWIW, the only thing I had to
ground to get proper operation was my CV keyboard.
Best Regards, James

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.