Just... Max I have no idea about yr A1888-1... but just coming to say "bonjour"... I dont
know if there are many french on this list... but at least now I'm sure I'm not alone
anymore....



Best,

Alexandre

--- In Doepfer_a100@yahoogroups.com , <hardware@...> wrote:
>
> Max,
>
> you find my comments written inline.
>
> Best wishes
> Dieter Doepfer
>
> > Hi all, I'm Max from France and this is my first message to the Doepfer
> group.
> > I got my A100 today and it is even more interesting than i expected, i'm
> really happy.
> >
> > However, i have problems with the A-188-1 module that looks strange to
> > me for two reasons :
> >
> > The first thing wrong is that the number of stages of the module is
> > not mentionned on the rear pannel. One of the circles that indicate
> > this value should be colored black, but none is, they're all empty.
>
> That's strange. From the factory only A-188-1 modules without BBD circuits
> are delivered without filled circles at the front panel. Where did you
> purchase the module
>
> > I took it off the case to see the electronic board and read "A188-1
> > version 2" so i guess it is A-188-1B (1024 stages), the one i ordered.
>
> The label "A-188-1 Version 2" on the pc board does not say anything about
> the number of stages. These are determined by the BBD circuit that is used
> in the module. For details please refer to this document:
>
> www.doepfer.com > PRODUCTS > A-100 MODULES OVERVIEW > A-188-1 >
> A1881_adjustment.pdf
>
> I assume that there is no BBD circuit on the pc board and received a module
> without BBD by mistake.
>
> > The second problem (the real one) is that there's no audio from BBD
> > out... Neither is there from mix out when the potentiometer is turned
> > to 100% wet (BBD)but the dry output signal (original) is normal.
>
> This affirms my assumption that you got an A-188-1 without BBD circuit.
>
> > I tried many things and settings ( input lvl 10; CV input switchs to
> > 0; with/without feedback, BBD polarity + - 0 ...) I also tried to take
> > the module off the case to see if it was a problem with the PSU, but
> > ain't got no signal from BBD out. The connection with the bus board is
> > ok (set once, by myself and correctly).
> > When feedback is set to 10 it slightly self-oscillate and i can
> > 'sweep' the self oscilation freq with the delay clock potentiometer,
> > however, the level of the self oscillation is nearly inaudible and i
> > had to amplify it a lot to ear it.
> >
> > Is there anything i can do to make it work or to make sure it has a
> > problem and has to be shipped back
>
> Please contact the dealer where you purchased the module to clarify the
> affair. Maybe they have sent you the wrong module.
>
> > Please help !
> >
> > Sorry for bad english and thanks all for building such an interesting
> > and active message board.
> > Max.
>