[sdiy] Discrete Op Amps

[cheater00 cheater00]

It doesn't exactly do the same thing. For example, putting an op amp of the
right character right after the vcf might do really good things. Give it a
try if you can.

On Sun, 9 Apr 2017 07:58 Elain Klopke, <functionofform at gmail.com> wrote:

> In that case, I'll just leave them to my 500 series lunchbox and send the
> outputs from the synths to that before they hit the audio interface.
>
> On Sun, Apr 9, 2017 at 12:05 AM, cheater00 cheater00 <cheater00 at gmail.com>
> wrote:
>
> Modern op amps might have better gbw, noise, etc, but older op amps
> (discrete or not) might have characteristics that you desire. For example,
> they might clip or sag in a specific way that is desirable. The thing is,
> that sort of thing is mostly inaudible on simple sounds - the more complex
> a sound the more "magic" you can work. So on the voice mixer - yes. On an
> instrument effect, mixer channel, etc. Last op amp of a synth voice, maybe.
> Vca, maybe. Op amp after filter, or in filter, maybe. Vco mixer before vcf
> is pushing it. Before that don't bother. There's a place for them and if
> your budget allows them, go wild. However most synths contain very many op
> amps so making them expensive could easily spiral out of control.
>
> On Sat, 8 Apr 2017 13:31 Gordonjcp, <gordonjcp at gjcp.net> wrote:
>
> On Sat, Apr 08, 2017 at 05:45:35AM -0500, Elain Klopke wrote:
> > Here's a question that's surprisingly not related to my Organ Donor
> module
> > project.
> >
> > Discrete op amps are kinda a big thing in recording electronics DIY, but
> do
> > they have a place in SynthDIY or are they best left for people making
> > preamps, compressors, EQs, and mixers?
>
> Under all possible circumstances - even preamps for the golden-eared
> audiophools - discrete opamps will be outperformed in every respect by even
> the cheapest shittiest IC.
>
> You should read Rod Elliot's article on discrete opamps, and build the
> circuit he suggests.  It won't perform well but it will give you a much
> better understanding of how proper opamps work.
>
> http://sound.whsites.net/project07.htm
>
> --
> Gordonjcp MM0YEQ
>
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