Doepfer

You will need to send it to a filter or/and use the lower delay settings,
this is what all analog delays do(you just don't have control over it
normally)
 I believe Doepfer has a dual version of a switched cap filter in the works
to compliment the 188 modules:
http://www.doepfer.de/A100_SCF.htm
but the advantage to the open design is you can use any filter you want or
none.
i love the 188-2 and the other 188 modules, some crazy sounds can be had.
best,
phil


On 5/5/07 2:51 PM, "patate_le_mage" <patate.pat@wanadoo.fr> wrote:

> thank you,
> so you confirm it is the clock noise.
> in the text they sayed :  e.g. to
> control an external clock suppression filter as the A-188-2 is not
> equipped
> with such a filter (same as for the A-188-1).
> so it is possible to supress this clock noise, do you know how i can do
> ? Is there a specific module wich permit to avoid this clock noise?
> --- In Doepfer_a100@yahoogroups.com, "P. Hendricks" <ph@...> wrote:
>> 
>> you may want to read the description of the module, everything you
> state
>> seems normal for 188 modules, that's how they were designed:
>> 
>> from: http://www.doepfer.de/A1882.htm
>> 
>> The A-188-2 uses the same high speed VCO (HSVCO) for the BBD clock as
> the
>> A-188-1. The clock and consequently the delay time can be controlled
>> manually (delay control) and by the two control voltage inputs CV1 and
> CV2.
>> The sensitivity of CV1 is approximately 1V/oct. CV2 is equipped with a
>> polarizer (the new type of potentiometers with center detent too). The
> HSVCO
>> has a clock output available that is normalled to the clock input
> socket.
>> These sockets can be used to link different BBD modules and to run
> them with
>> the same clock. But even other applications with frequency dividers
> (e.g.
>> A-163) or PLL (e.g. A-196) are conceivable. A voltage composed of the
> manual
>> delay control, CV1 and CV2 is available at the CV out socket, e.g. to
>> control an external clock suppression filter as the A-188-2 is not
> equipped
>> with such a filter (same as for the A-188-1).
>> 
>> Important note (especially for A-188-1 users): The A-188-1 uses single
> BBD
>> circuits, which can be adjusted to minimize the clock noise as the
> outputs
>> of the used BBD circuits are symmetrical (for details please refer to
>> A1881_adjustment.pdf, trimming potentiometer P10). By way of contrast
> the
>> BBD circuit used in the A-188-2 (MN3011) has six asymmetrical outputs
> that
>> cannot be adjusted to minimize the clock noise. In addition the clock
> noise
>> of the six outputs adds up. From there the clock noise of the A-188-2
> is
>> more intense than of the A-188-1. This is caused by the properties of
> the
>> MN3011 but not a mistake of the module ! If you feel that the clock
> noise is
>> too much you have the right to return the unused module within 14 days
> (i.e.
>> the module has no scratches or prints, e.g. from srewing into the
> frame).
>> On 5/5/07 12:51 PM, "patate_le_mage" patate.pat@... wrote:
>> 
>>> Hello everybody,
>>> my english is not very good but i try to explain my problems.
>>> when i use the A-188-2, if i try to use the delay knob in his first
>>> half, all the output give a high  frequency ( depend on the delay )
>>> sound and i can't suppress it without going thru a LP-VCF wich
>>> drastically modify my sound, A notch filter does'nt supress it
> because
>>> it's not a sinus sound. Is this sound the clock sound wich is
> describe
>>> in the module's presentation ?
>>> My second problem is when i try to use the clock in : what kind of
>>> signal have i to put in, is it only to chain BBD modules ?
>>> Third, i haven't really understood the use of the CV out on this
>>> module : what exactly is going out.
>>> thanks for your answer.
>>> 
>>> Patrick Maurel
>> 
>