[sdiy] More Drum ?'s. Replacing 566

[Bill Berzinskas]

i do have a good bit of modules over here i've been building..  but right 
now, musically, for me, they serve their purpose, hence the desire for some 
drum synths..  while i don't mind plugging breadboards into my modular, i 
just like to know ahead of time what i might come up with....  :-P

maybe i'll go at the drum synth in a module fashion..  we'll see



----- Original Message ----- 
From: "harrybissell" <harrybissell at prodigy.net>
To: "Bill Berzinskas" <wberzinskas at nc.rr.com>
Cc: "Dave Magnuson" <resfreq at hoohahrecords.com>; 
<synth-diy at dropmix.xs4all.nl>
Sent: Tuesday, February 22, 2005 2:28 AM
Subject: Re: [sdiy] More Drum ?'s. Replacing 566


> 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
>> >>>
>> >>>
>> >>
>> >
>> >
>
>