[sdiy] Analog bandwidth
mr at analogue.org
Thu Feb 20 20:50:40 CET 2014
On 20 February 2014 19:43, Andre Majorel <aym-htnys at teaser.fr> wrote:
> On 2014-02-20 16:39 +0000, Richard Wentk wrote:
>> Has anyone actually measured the true signal bandwidth at the
>> output of an analog synthesizer? Any make or model would do.
> No actual measurement but I doubt that an MS-20 is flat up to
> even 10 kHz. Try comparing one with a modern synth with the
> filters bypassed and you'll see what I mean. The output op amps
> are 4558. Slew rate is 1 V/µs...
Building old drum machine circuits like cymbals & hihats & cowbells
with new components can give quite a nasty upper treble, since the
OP-amps etc are not sloppy enough. :-)
In modern analog synth design, most of the signals you'll find above
20 kHz are disturbances from the digital control system, and without
proper remedy they can give you problems!
More information about the Synth-diy