[Coco] WTB Orchestra 90 cartridge
zippster278 at gmail.com
Fri Aug 19 00:33:14 EDT 2016
New revision, with non-polar electrolytic output caps.
It sounds pretty good to me. I made a serious effort to compare it with an original
Orch 90, even recording clips to listen to side by side, and running them both through
some simple spectrum analyzing software, and it is almost identical.
So, I think I’m satisfied with it now. :)
> On Aug 3, 2016, at 10:53 AM, RETRO Innovations <go4retro at go4retro.com> wrote:
> I may bump the value up of the output caps to something like 10uF or
> more on
> the final revision, not sure. BTW, I was able to find .1uF bi-polar
> electrolytic caps
> at Digikey.
> Digikey URLs are somewhat wonky. That one did not get to a list, but
> DK shows 10 in stock options, the through hole one is:
> SMT version:
> As for the choice between film and NP electrolytics, the .1 looks to be
> cheaper as film, at least in through hole:
> $.224 for the .1 uF NP @ 100 units
> $.0864 for the .1uF polyester @ 100 units:
> But, worse if Ed wants to do SMT only:
> $.62 for .1uF @ 100 units.
> 1uF is left as an exercise, but the numbers flip flop (film is more
> expensive than NP, in both through hole and SMT options)
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