[sdiy] SIP filter modules coming

[Ben Bradley]

The Intersil (now Renesas, which used to be Hitachi way back when)
HFA3046 is an RF/microwave (5.5 GHz!) version of the 3046, which (I
presume) is why it's so expensive. I'm not even sure I'd trust myself
to use it without it going into spurious microwave oscillations, even
if the transistors are well matched at DC/audio.

Hearing about the new 3280 is Really Good News.

The new LM394-equivalent supermatched pair is nice to see also, but it
would be really interesting to have a new uA726, or maybe the LM394
transistors with a similar on-chip oven (how do the 726 transistors
compare with the 394?). I wonder how many supermatched transistors
with oven control circuitry can be put in a 16-pin DIP or SOIC ...

While I'm here, does anyone other than THAT (the former DBX) make
Blackmer cell VCAs? I haven't heard of any, and I'm guessing there's a
patent in force.


On Tue, Apr 24, 2018 at 1:55 PM, Roman <modular at go2.pl> wrote:
> It's not the same pinout, only 8 pins.
> And I don't think it would be cool. There are so many 80017 clones already,
> time for something new.
> But with all those chips available now, anyone can make different flavors of
> Roland voice hybrids.
>
> Roman
>
>
> Dnia 24 kwietnia 2018 15:17 Jacob Watters <jacobwatters at gmail.com>
> napisał(a):
>
> It would be cool if they were the same pinout as the Roland 80017 so they
> could be a drop-in replacement. Curtis filter with Juno chorus :)
>
> On Mon, Apr 23, 2018, 7:54 AM Roman Sowa, <modular at go2.pl> wrote:
>
> This may be a gamechanger. AFAIK Alfa is planning to release
> ready-to-use SIP modules with filter chips - AS3320 and all components
> they need to operate. Pinout is just power, Frequency and resonnance CV,
> signal in and out. LPF goes first.
> Size 20x15mm including pins!
> Planned for end of May.
>
> With complete line of obvious next builds everyone could make their
> synthesizer using only a handful of those, pots and wires.
>
> Roman
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy
>
>
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy
>