Synth-DIY Yahoo! Groups Archives

Thread

how to modify a A-188-1 bbd

2010-11-15 by martindx100

how do i get wider range on the delay clock dial,
without changing the input cv scale?
are there any resistors limiting the range of the dial only?


"commercial break" :)
doepfer system, melotron, elektor formant vocoder and more
on swedish national radio at 32min 20sec in the clip

 http://sverigesradio.se/sida/play.aspx?ljud=2737413

buy my friends record :)
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/martin

AW: [Doepfer_a100] how to modify a A-188-1 bbd

2010-11-16 by yahoo@doepfer.de

> how do i get wider range on the delay clock dial,
> without changing the input cv scale?
> are there any resistors limiting the range of the dial only?

The delay clock dial should have an extremely wide range from the factory
(down to clearly audible clock noise and a "destroyed" sounding audio
output). The upper clock value is limited because of the max. clock
frequency for the BBD circuits (typ. 200 kHz).

Best wishes
Dieter Doepfer

Re: [Doepfer_a100] how to modify a A-188-1 bbd

2010-11-16 by martin sörensen

i messured the clock output
mine only goes betweene 130kHz and 232kHz

/martin

Show quoted textHide quoted text

  ----- Original Message ----- 
  From: yahoo@doepfer.de 
  To: Doepfer_a100@yahoogroups.com 
  Sent: Tuesday, November 16, 2010 10:07 AM
  Subject: AW: [Doepfer_a100] how to modify a A-188-1 bbd

  > how do i get wider range on the delay clock dial,
  > without changing the input cv scale?
  > are there any resistors limiting the range of the dial only?

  The delay clock dial should have an extremely wide range from the factory
  (down to clearly audible clock noise and a "destroyed" sounding audio
  output). The upper clock value is limited because of the max. clock
  frequency for the BBD circuits (typ. 200 kHz).

  Best wishes
  Dieter Doepfer

[Non-text portions of this message have been removed]

AW: [Doepfer_a100] how to modify a A-188-1 bbd

2010-11-17 by yahoo@doepfer.de

> i messured the clock output
> mine only goes betweene 130kHz and 232kHz
>
> /martin

That's too narrow. Probably the exponential generator circuit (CA3096) is
defective and has to be replaced. As the CA3096 is mounted into a socket it
is very easy to replace the circuit. Please contact the
dealer/representative where you purchased the module. We will add a CA3096
free of charge to the next consignment to the dealer/representative in
question (from your message I cannot see your home country). If you are not
able to replace the circuit the module has to be sent in.

Best wishes
Dieter Doepfer

Re: [Doepfer_a100] how to modify a A-188-1 bbd

2010-11-17 by martin sörensen

i live in sweden 
but i purchased it from thomann

 /martin

Show quoted textHide quoted text

  ----- Original Message ----- 
  From: yahoo@doepfer.de 
  To: Doepfer_a100@yahoogroups.com 
  Sent: Wednesday, November 17, 2010 9:58 AM
  Subject: AW: [Doepfer_a100] how to modify a A-188-1 bbd

  > i messured the clock output
  > mine only goes betweene 130kHz and 232kHz
  >
  > /martin

  That's too narrow. Probably the exponential generator circuit (CA3096) is
  defective and has to be replaced. As the CA3096 is mounted into a socket it
  is very easy to replace the circuit. Please contact the
  dealer/representative where you purchased the module. We will add a CA3096
  free of charge to the next consignment to the dealer/representative in
  question (from your message I cannot see your home country). If you are not
  able to replace the circuit the module has to be sent in.

  Best wishes
  Dieter Doepfer

[Non-text portions of this message have been removed]

AW: [Doepfer_a100] how to modify a A-188-1 bbd

2010-11-17 by yahoo@doepfer.de

Please tell me your address off list (hardware@doepfer.de). I'll send you a
new CA3096 for free.

Best wishes
Dieter Doepfer

Show quoted textHide quoted text

> -----Ursprungliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von martin sorensen
> Gesendet: Mittwoch, 17. November 2010 15:36
> An: Doepfer_a100@yahoogroups.com
> Betreff: Re: [Doepfer_a100] how to modify a A-188-1 bbd
>
>
> i live in sweden
> but i purchased it from thomann
>
>  /martin
>
>   ----- Original Message -----
>   From: yahoo@doepfer.de
>   To: Doepfer_a100@yahoogroups.com
>   Sent: Wednesday, November 17, 2010 9:58 AM
>   Subject: AW: [Doepfer_a100] how to modify a A-188-1 bbd
>
>
>
>   > i messured the clock output
>   > mine only goes betweene 130kHz and 232kHz
>   >
>   > /martin
>
>   That's too narrow. Probably the exponential generator circuit
> (CA3096) is
>   defective and has to be replaced. As the CA3096 is mounted into
> a socket it
>   is very easy to replace the circuit. Please contact the
>   dealer/representative where you purchased the module. We will
> add a CA3096
>   free of charge to the next consignment to the dealer/representative in
>   question (from your message I cannot see your home country). If
> you are not
>   able to replace the circuit the module has to be sent in.
>
>   Best wishes
>   Dieter Doepfer
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

Re: [Doepfer_a100] how to modify a A-188-1 bbd

2010-11-18 by martin sörensen

i´ll do that
thanks for helping me

best regards
martin

Show quoted textHide quoted text

  ----- Original Message ----- 
  From: yahoo@doepfer.de 
  To: Doepfer_a100@yahoogroups.com 
  Sent: Wednesday, November 17, 2010 5:37 PM
  Subject: AW: [Doepfer_a100] how to modify a A-188-1 bbd


    
  Please tell me your address off list (hardware@doepfer.de). I'll send you a
  new CA3096 for free.

  Best wishes
  Dieter Doepfer

  > -----Ursprungliche Nachricht-----
  > Von: Doepfer_a100@yahoogroups.com
  > [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von martin sorensen
  > Gesendet: Mittwoch, 17. November 2010 15:36
  > An: Doepfer_a100@yahoogroups.com
  > Betreff: Re: [Doepfer_a100] how to modify a A-188-1 bbd
  >
  >
  > i live in sweden
  > but i purchased it from thomann
  >
  > /martin
  >
  > ----- Original Message -----
  > From: yahoo@doepfer.de
  > To: Doepfer_a100@yahoogroups.com
  > Sent: Wednesday, November 17, 2010 9:58 AM
  > Subject: AW: [Doepfer_a100] how to modify a A-188-1 bbd
  >
  >
  >
  > > i messured the clock output
  > > mine only goes betweene 130kHz and 232kHz
  > >
  > > /martin
  >
  > That's too narrow. Probably the exponential generator circuit
  > (CA3096) is
  > defective and has to be replaced. As the CA3096 is mounted into
  > a socket it
  > is very easy to replace the circuit. Please contact the
  > dealer/representative where you purchased the module. We will
  > add a CA3096
  > free of charge to the next consignment to the dealer/representative in
  > question (from your message I cannot see your home country). If
  > you are not
  > able to replace the circuit the module has to be sent in.
  >
  > Best wishes
  > Dieter Doepfer
  >
  >
  >
  >
  >
  > [Non-text portions of this message have been removed]
  >
  >
  >
  > ------------------------------------
  >
  > Yahoo! Groups Links
  >
  >
  >



  

[Non-text portions of this message have been removed]