[sdiy] Phase shifters & Compandor chip availability

[Tim Ressel]

Colin,

Ah....CD4007. Much is made clear. What are the signal
and CV levels for the Quadra phasor? I only have one
page of schematic for the Quadra phasor, is there
more?

Many thanks.

--Tim Ressel

--- Colin f <colin at colinfraser.com> wrote:
> ----- Original Message -----
> From: "Tim Ressel" <madhun2001 at yahoo.com>
> To: "Colin f" <colin at colinfraser.com>; "Synth-Diy"
> <synth-diy at dropmix.xs4all.nl>
> Sent: Wednesday, January 08, 2003 11:38 AM
> Subject: Re: [sdiy] Phase shifters & Compandor chip
> availability
> 
> 
> > Colin, you built the Juergen Haible circuit, which
> > does not use companding, yes? Is there much noise?
> 
> Juergen's version does have companding, but it uses
> some op-amps and the
> FETs in a 4007 rather than an companding chip such
> as the NE571.
> I haven't measured the noise, but it is perfectly
> acceptable for an analogue
> fx unit.
> It is a very nice sounding phaser. I've got a small
> stone too, but they have
> quite different characters, so there's room for
> both.
> 
> Colin f
> 
> 


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