Doepfer

DIETER SAYS:
"Hi Bakis,

this is my comment to one of the A-154 suggestions
(you may publish it in the
forum):

> the module looks good , but i see the need for a few
> adjustments. the 4 led's to tell which direction it
is moving in, is
> very confusing, especially in a live context with
dim lights.
>
> my suggestion is to have 8 horizontal led's which
indicate the
> direction the sequencer will follow. here are the
possibilites

I cannot see the reason for this additional LEDs as
you have the 8 LEDs of the
A-155 that show the mode while the sequence is
running. And how do you want do
display the CV addressed step mode ? From my point of
view you can recognize
much faster which mode is selected if only one LED is
used to display the mode.
For your suggestion you have to look at the 8 LEDs and
your brain has to
"calculate" which mode this will be. This takes much
more time than to look at
one LED. For my  opinion your display type is more
confusing and takes more time
to see which mode is selected. And the "light show" is
available at the A-155
LEDs. But for us it is no problem to realize this type
of display if the users
would prefer this (it's only different PIC programming
of the LEDs).

> chasing one another to the right for forward
movement
> chasing one another to the left for reverse movement
> chasing one another to the right then back to the
left for pendulum
> mode 1 and flashing the last leds twice for pendulum
mode 2
> random is just what it means a random diplay of its
position.
>
> the plus side to this is its cheap and would provide
a cool light
> show as well. hint blue led's. also you could have
the VC Clock cycle
> the led's in time like the A145, 146 and 147 lfo's.
>
> the voltage controlled clock should  have a variable
pulse width with
> an input and manual pot.

This will probably be available (we prepare a new
A-154 sketch with this
additional feature)

......

> here is the Feature i crave the most!!
>
> Two 10 pin connectors  on on the back so you can
have a VC analog
> selection for 2 sequencers to have 16 steps.

This causes a technical problem as it is not possible
to turn one of the A-155
off (one of the 8 steps is always active). One would
have to modify the circuit
so that it is possible to turn one of the A-155 off
(e.g. using the inhibit pins
of the multiplexer). This would require electronical
knowledge: I'm not sure if
it makes sense to offer a module that requires
electronical modifications. I
tuppose most of the A-100 user's would not be able to
do these modifications on
the pc boards.

But it would be possible to add this feature (i.e. 2
inhibit outputs to address
the 2 A-155) if the user is able to do the required
modifications on the A-155
boards.

Another solution would be the usage of a VC switch
(A-150) that switches the CVs
and triggers/gates between the two A-155 modules. The
A-154 needs not to know if
only one A-155 or two A-155 are connected as he simply
generates the address
signals A0, A1, A2 and the two inhibit signals as
well. If the inhibit signals
are not used no modifications are required for the
A-155. If the inhibit signals
are used the A-155 have to be modified. Or one of
inhibit signals is used to
control a A-150 VC switch.

My suggestion: internal (i.e. on the pc board) the two
inhibit signals will be
available for those customers who are able to do the
required modifications for
the A-155. In addition one inhibit signal (e.g. called
A3) is available at the
front panel (jack socket) to drive an optional A-150.

Best regards
Dieter Doepfer
Doepfer Musikelektronik GmbH
http://www.doepfer.de
email: hardware@doepfer.de"





=====
synthfreak(parallel worlds)
athens-greece
[Doepfer_a100] group owner-moderator

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