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A-112 question

A-112 question

2010-07-18 by Lars

Hello again!

Sorry to bother you all again...but I have another question.  
I have a A-112 sampler module and I want to trigger it from a Doepfer pitch ribbon (the pitch ribbon has the external R2M box).  The strange thing is that I can't seem to trigger the A-112 from the ribbon... I can trigger the A-112 from e.g. a LFO, and from the A-155 sequencer.  I am suspecting that the ribbon controller is delivering to low voltage (or that the A-112 wants slightly more "juice").  The strange thing is that the ribbon works fine with other modules...
Anyone with similar experience..?
Any good ideas...? Any simple way to adjust the A-112?

Thanks,

/Lars

AW: [Doepfer_a100] A-112 question

2010-07-19 by yahoo@doepfer.de

> Hello again!
>
> Sorry to bother you all again...but I have another question.
> I have a A-112 sampler module and I want to trigger it from a
> Doepfer pitch ribbon (the pitch ribbon has the external R2M box).
>  The strange thing is that I can't seem to trigger the A-112 from
> the ribbon... I can trigger the A-112 from e.g. a LFO, and from
> the A-155 sequencer.  I am suspecting that the ribbon controller
> is delivering to low voltage (or that the A-112 wants slightly
> more "juice").  The strange thing is that the ribbon works fine
> with other modules...
> Anyone with similar experience..?
> Any good ideas...? Any simple way to adjust the A-112?
>
> Thanks,
>
> /Lars

This issue has been discussed already in April 2008 in this group (startin a
message dated April 27, 2008).

You probably own an A-112 manufactured before May 2008. In April 2008 it
came up in this group that the R2M/A-112 combo has problems with the gate
transmission because the A-112 gate input had a 10k load that reduces the
gate voltage coming from the R2M to about 2V. And that's not sufficient to
trigger the A-112. All A-112 manufactured from May 2008 are equipped with a
100k resistor instead of 10k as we immediately changed the value of the
corresponding resistor.

If you are a bit familiar with electronics you may replace the 10k pull down
resistor at the A-112 gate input to a higher value (e.g. 47k or 100k). It's
the resistor R15 that is located just behind the Midi In socket (between
Diode D5 and capacitor C21).

Best wishes
Dieter Doepfer

SV: AW: [Doepfer_a100] A-112 question

2010-07-22 by Lars Bröndum

Thanks for the quick reply!
I just purchased the A-112 unit (from Thomann) and I wonder if this is covered under the warranty.
Greetings,
Lars


--- Den mån 2010-07-19 skrev yahoo@doepfer.de <yahoo@doepfer.de>:

Från: yahoo@doepfer.de <yahoo@doepfer.de>
Ämne: AW: [Doepfer_a100] A-112 question
Till: Doepfer_a100@yahoogroups.com
Datum: måndag 19 juli 2010 10:10















 
 



  


    
      
      
      > Hello again!

>

> Sorry to bother you all again...but I have another question.

> I have a A-112 sampler module and I want to trigger it from a

> Doepfer pitch ribbon (the pitch ribbon has the external R2M box).

>  The strange thing is that I can't seem to trigger the A-112 from

> the ribbon... I can trigger the A-112 from e.g. a LFO, and from

> the A-155 sequencer.  I am suspecting that the ribbon controller

> is delivering to low voltage (or that the A-112 wants slightly

> more "juice").  The strange thing is that the ribbon works fine

> with other modules...

> Anyone with similar experience..?

> Any good ideas...? Any simple way to adjust the A-112?

>

> Thanks,

>

> /Lars



This issue has been discussed already in April 2008 in this group (startin a

message dated April 27, 2008).



You probably own an A-112 manufactured before May 2008. In April 2008 it

came up in this group that the R2M/A-112 combo has problems with the gate

transmission because the A-112 gate input had a 10k load that reduces the

gate voltage coming from the R2M to about 2V. And that's not sufficient to

trigger the A-112. All A-112 manufactured from May 2008 are equipped with a

100k resistor instead of 10k as we immediately changed the value of the

corresponding resistor.



If you are a bit familiar with electronics you may replace the 10k pull down

resistor at the A-112 gate input to a higher value (e.g. 47k or 100k). It's

the resistor R15 that is located just behind the Midi In socket (between

Diode D5 and capacitor C21).



Best wishes

Dieter Doepfer





    
     

    
    


 



  












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