Doepfer

Hello again!

I am a happy owner of this fantastic and versatile module!

But I have some questions, maybe I have them due to my poor English.

I read in the manual, page 5

Only control voltages can be processed by the T&H unit due to the holding capacitors of the T&H circuits. The T&H section is not suitable for audio signals.

First of all I suppose that I can eject a slow LFO. If I am right, until how many Hz T&H section

can process?

Secondly, again in the manual, page 6.

JP8 top, JP7 away from the common T&H (factory setting) .

In this case the common input of the T&H unit 2b is connected to the common socket of the multiplexer unit 1b provided that no plug is inserted into the common input of the T&H unit 2b.

Provided that only control voltages can be processed by the T&H unit, if I inject an audio signal in Common

Switch input it will be transferred in the common T&H Input because of the normalization. This is illogical to

me. Maybe I misunderstand something, I am asking kindly of your help!

Best regards,

Miltos

Hello,

you find my answers written inline.

Best regards
Dieter Doepfer

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com]
> Gesendet: Sonntag, 7. April 2019 14:44
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] A-152 question
>
> Hello again!
>
> I am a happy owner of this fantastic and versatile module!
> But I have some questions, maybe I have them due to my poor English.
>
>
> I read in the manual, page 5
> Only control voltages can be processed by the T&H unit due to the
> holding capacitors of the T&H circuits. The T&H section is not
> suitable for audio signals.
>
> First of all I suppose that I can eject a slow LFO. If I am
> right, until how many Hz T&H section
> can process?

A slow or even fast LFO is no problem. The holding capacitors of the T&H are
22nF. The exact frequency is a bit hard to define because it depends upon
the "ON" resistance of the electronic switches which do not have an exact
value.
I suppose it will work at least up to a few hundred Hz.

> Secondly, again in the manual, page 6.
> JP8 top, JP7 away from the common T&H (factory setting) .
>
> In this case the common input of the T&H unit 2b is connected to
> the common socket of the multiplexer unit 1b provided that no
> plug is inserted into the common input of the T&H unit 2b.
>
> Provided that only control voltages can be processed by the T&H
> unit, if I inject an audio signal in Common
> Switch input it will be transferred in the common T&H Input
> because of the normalization. This is illogical to
> me. Maybe I misunderstand something, I am asking kindly of your help!

If audio signals have to be processed by the switch section this
normalization should not be installed (or removed).

> Best regards,
> Miltos
>
>
>
>
>
>
>
>
>
>