Re: [AH] DX7 Vs...sx200?

From Brian Willoughby
Sent Mon, Oct 1st 2018, 04:45

On Sep 30, 2018, at 7:43 PM, xxxx@xxxxxxxx.xxx wrote:
> On 2018-09-30 13:56, Brian Willoughby wrote:
>> On Sep 30, 2018, at 10:07 AM, xxxx@xxxxxxxx.xxx wrote:
>>> On 2018-09-29 14:12, matrix wrote:
>>>> If you look at Casio's VZ-1 there are buttons with LEDs that allow =
you
>>>> to enable and disable each operator.  I would love an FM synth that
>>>> had similar buttons above a control section that instead of =
enabling
>>>> or disabling the operators, they enabled or disabled the controls =
for
>>>> each operator.  That way you could select what operators were =
affected
>>>> by the FM depth, harmonic control, etc..  Even with the Jellinghaus
>>>> and Detronics DT7 I think you have to adjust each parameter =
separately
>>>> vs. having groupings you can assign.
>>> The DX7 programmer I've designed allows multiple operator editing by =
using a common set of controls for the operators (and switches to select =
the operators to edit), which reduces cost significantly and makes the =
programmer smaller (3U rack), but sacrifices dedicated sliders for each =
operator.  I put the development on hold to focus on other programmers, =
once the DT7 was announced, but perhaps it's time to thaw the project.
>> Hey, Doug. Would it be possible for a die-hard fan of the DX7 to buy =
6
>> of your programmers and use them in parallel? It might be worth the
>> effort of a few firmware tweaks to enable that possibility. Then, =
most
>> customers could buy just one programmer, but some really serious FM
>> programmers could link 6 of them (or 4, if your programmer works with
>> the 4-op Yamaha FM).
>> Brian
>=20
> It would be possible to daisy chain 6 without any firmware tweaks =
(they have merging MIDI inputs).  However, if someone were interested, =
it would be simpler (and a lot less expensive) for me to build a =
dedicated 9U version, since it's just a firmware update and a few more =
panels.  It may even fit it in 6U, if I use 20mm sliders (instead of =
60mm).

Thanks for the response, Doug. I=E2=80=99m fascinated by designing PCB =
layouts so that the same board can be reused for multiple products, from =
the smallest (most affordable) to the largest (only for crazy folks with =
a huge budget). I suppose you=E2=80=99d need a new PCB to change from =
60mm to 20mm sliders, but maybe the PCB fab is not the most expensive =
part of your manufacturing costs.

I=E2=80=99m currently designing a device that can generate CV, and it =
can be expanded by 8 CV channels at a time, up to 40 CV outputs in one =
device. This is probably a lot cheaper than a custom 40-CV product =
because the same 8-CV boards are just plugged in together. This way, a =
bulk order of boards can be made to hopefully get a discount on fab, and =
then everyone benefits from the lower cost.

Brian