[sdiy] More Drum ?'s. Replacing 566

[harrybissell]

LOL... what you want is a modular synth.  Then you can try any kick drum you
want.

I'd call PWM a probable loser... too much HF energy and not enough fundamental.
Decaying sinusoid with maybe a little 'something' added would work OK.

H^) harry

Bill Berzinskas wrote:

> i'll check that out..   like i say, just trying to fill some time with my
> parts bin..  lol..
>
> while were on the subject..    how would different VCO features found in
> standard modules alter the sound..  for instance, what does a pwm'd kick
> drum sound like?   or replace the triangle with a sine, and mix it with that
> nasty square..  intresting..  any input on this anyone?
>
> ----- Original Message -----
> From: "Dave Magnuson" <resfreq at hoohahrecords.com>
> To: "Bill Berzinskas" <wberzinskas at nc.rr.com>; <synth-diy at dropmix.xs4all.nl>
> Sent: Monday, February 21, 2005 10:12 PM
> Subject: Re: [sdiy] More Drum ?'s. Replacing 566
>
> > No the 556 and 566 are pretty different.   The 556 is a dual 555 timer.
> > The 566 is a single chip VCO with tri and square outputs.
> >
> > Check out Rene's 566 VCO for an idea of how it's used:
> > http://www.uni-bonn.de/~uzs159/vco566.html
> > This design is a bit better then Midwest's, but uses the same chip.
> >
> > I goofed when typing my original reply... my apologies.  The midwest
> > design uses the 566.
> >
> > You *could* do a VCO (two, actually) with a 556... look at the Paia
> > Fatman... but that's not the chip used in the Midwest drum kits.  For a
> > single VCO, use the 7555... less power hungry than the 555.
> >
> > Dave
> >
> > ----- Original Message -----
> > From: "Bill Berzinskas" <wberzinskas at nc.rr.com>
> > To: "Paul Perry" <pfperry at melbpc.org.au>; <synth-diy at dropmix.xs4all.nl>
> > Sent: Monday, February 21, 2005 9:30 PM
> > Subject: Re: [sdiy] More Drum ?'s. Replacing 566
> >
> >
> >> so is the 556 a acceptable sub?  i thought it was just a dual 555 ish
> >> device?
> >>
> >> ----- Original Message -----
> >> From: "Paul Perry" <pfperry at melbpc.org.au>
> >> To: <synth-diy at dropmix.xs4all.nl>
> >> Sent: Monday, February 21, 2005 9:08 PM
> >> Subject: Re: [sdiy] More Drum ?'s. Replacing 566
> >>
> >>
> >>>
> >>> ----- Original Message -----
> >>> From: "Bill Berzinskas"
> >>>
> >>>> one thing i do have is some of the Microchip V-F converters..  although
> >>> they
> >>>> put out sq and ramp, if i could muster a triangle out of it, it should
> >>> work,
> >>>> ehh?
> >>>
> >>> To make a triangle from a ramp, just shift the ramp to be from -5 to +5
> >>> say
> >>> & rectify.
> >>> As for the 556 and 566, one is easy to get & one is impossible.
> >>> Guess which one is in the Midwest designs?
> >>>
> >>> paul perry melbourne australia
> >>>
> >>>
> >>
> >
> >