Hmmm, I will need to dig a little deeper into the filter side of things.
I know EMU ran out of supplies of the 2044 whilst still producing the SP1200 sampler back in the 90's. The last few production runs used a discrete reproduction of the 2044. I would be interesting to see how they did it. I'm used to service old analog gear and still have quite a large number of NOS CEM and SSM devices. I try not to use them in new designs so as to have them available when the odd friend brings a bit of busted gear for repair.
The sudden re-appearance of the 2044 has me scratching my head abit. I have some of the new ones and yes I cant tell the difference sound wise from the originals. Whats strange is that from what I remember Analog Devices bought out SSM and say most of the old dies etc are long gone. Some one has done a good job of back engineering if they've been done from scratch.
My design is going to be based on all the original analog side of things so soundwise it should be identical. The only difference will be each module will have a microprocessor for parameter adjustment and each parameter will be independantly adjustable eg no tone/click
balance, you can fully adjust the amount of tone and click or tone and noise for each patch. This I agree for a purist is a departure from the original SDSV but in my view only enhances its capabilities without affecting its sound characteristics.
As each module is under the control of a microprocessor they will be
linked at the rear by a daisy chained ribbon. Each module communicates
with the master "parameter editor" module via a digital serial link, thus the number of modules in any "kit" will be very flexible.
I am doing 3d mockups on how the unit may look at the moment and will
post some up when available. Yes a pretty big job in all but I don't work at the moment as I'm disabled due to a spinal injury and this keeps me ticking over. I have plenty of time to aply to this.
I'm going into hospital next week for another op so I was hoping to get the pics etc requested before then as I will lay in bed with the notebooks keeping myself busy =), so if anyone can help me out asap with the photo's I'd be really appreciative
thanks for the feedback so far, hopefully I can set up a web site soon and move the discussion to there ASAP
cheers
--- In Simmons_Drums@yahoogroups.com, "spridleyman" <sprgroups@...> wrote:
>
>
> > filter, the internal circuitry of the 2044 is in fact very
> > similar to the SSM2040 and the CEM range of filters.
>
> No.. The 2044 is a sort of folded transistor ladder design, a
> sort of distant cousin of the Moog ladder (as used SDS3 & 4).
> The 2040 and CEM filters are cascaded OTA designs - not the same.
>
>
>
> Steve
>