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Archive for chromapolaris.
Thread
2010-10-06 by Paul D. DeRocco
2010-10-24 by David Clarke
> All the units I've looked at have sockets on theEvery Polaris I've ever seen has had socketed ICs (which I've always
> main board. Has anyone seen
> a unit that has ICs soldered to the board?
2010-10-25 by Paul D. DeRocco
> From: David ClarkeGreat. A friend of mine has figured out a way to drastically reduce the
>
> Every Polaris I've ever seen has had socketed ICs (which I've always
> appreciated, from a repair perspective).
2010-10-27 by picardjeanluc69
--- In chromapolaris@yahoogroups.com, "Paul D. DeRocco" <pderocco@...> wrote:
>
> > From: David Clarke
> >
> > Every Polaris I've ever seen has had socketed ICs (which I've always
> > appreciated, from a repair perspective).
>
> Great. A friend of mine has figured out a way to drastically reduce the
> noise in the Polaris, but it involves lifting some chip pins and connecting
> them in the air. He'll probably include a set of pre-wired chips in the kit
> when he finishes his new output board design, so that it won't require any
> soldering.
>
> --
>
> Ciao, Paul D. DeRocco
> Paul mailto:pderocco@...
>
2012-08-29 by wjmwpg
--- In chromapolaris@yahoogroups.com, "Paul D. DeRocco" <pderocco@...> wrote:
>
> > From: David Clarke
> >
> > Every Polaris I've ever seen has had socketed ICs (which I've always
> > appreciated, from a repair perspective).
>
> Great. A friend of mine has figured out a way to drastically reduce the
> noise in the Polaris, but it involves lifting some chip pins and connecting
> them in the air. He'll probably include a set of pre-wired chips in the kit
> when he finishes his new output board design, so that it won't require any
> soldering.
>
> --
>
> Ciao, Paul D. DeRocco
> Paul mailto:pderocco@...
>
2012-08-29 by Paul D. DeRocco
> From: wjmwpgMy friend has built one replacement output board, and it works nicely, but
>
> I've been searching the list-posts to see if this output
> board ever came to fruition but haven't found anything . . .
> did this ever happen?
> Alternatively, are there other suggestions to mod the outputThat probably wouldn't make a whole lot of difference. The real problems are
> board besides dropping a TL074 in place of the LM348?
2012-09-02 by james meagher
> From: wjmwpg
> I've been searching the list-posts to see if this outputMy friend has built one replacement output board, and it works nicely, but
> board ever came to fruition but haven't found anything . . .
> did this ever happen?
hasn't done a production run yet. I'll try to light a fire under him. I have
four Polarises that would make nice homes for his boards.That probably wouldn't make a whole lot of difference. The real problems are
> Alternatively, are there other suggestions to mod the output
> board besides dropping a TL074 in place of the LM348?
computer noise on the grounds and power supplies, digital noise coming in
through the error squawk line, and pseudo-random noise coupling from the
digital noise generator line into the output summing busses.Paul mailto:pderocco@...
--
Ciao, Paul D. DeRocco
Thanks for that info.I'd be happy with a schematic and parts list (hand drawn on a cocktail napkin?). I've never built anything before where I had to source/make my own PCB, but beyond that I'm sure I could cobble it together . . . and I'm sure the good folks of this group could give me some suggestions how to go about creating the board itself.Cheers,James