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Amp Guts Photos - Official Thread - Lets see those pics
- Thread starter svtb15
- Start date
Passinwind
I know nothing.
- Dec 3, 2003
- 23,079
- 46,050
- Disclosures
- Designer/Toaster Tech @ Passinwind Electronics
Passinwind
I know nothing.
- Dec 3, 2003
- 23,079
- 46,050
- Disclosures
- Designer/Toaster Tech @ Passinwind Electronics
Yep, it only took 2 years...
I've been thinking about modeling that preamp section and maybe doing something with it. So many rabbit holes already right now though.
Otherwise known as "Godfather of Tronographic Rusty Box"
Tronogrphic Rusty Box, AKA, Traynor TS50 Preamp (exactly replicated, with exception of a balanced output with volume control added) in a pedal!
Both are cool. Both are awesome!
Very Cool and Awesome pic, BTW!
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The structure of the amp is very clear:
Preamp:
and poweramp:
and a power transformer...
Nice!
Preamp schematic...
Of course, the Rusty contains a balanced output as well as the single ended like this...
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Mr. Foxen
Commercial User
I don't understand the point of the stacked differential paired output with the varied frequency stages. It appears like they are trying to individually amplify different parts of the spectrum and re-combine them at the output. In that era, Yorkville / Traynor sometimes came up with some kooky ideas.
- Feb 12, 2006
- 61,062
- 5
- 221,103
- Disclosures
- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
Off hand, it looks like a summing strategy. Odd way to do it imo, but we don't have insight into what the designer's intent was either.
But what are they summing? A full range signal filtered / split into 3 different bands, only to be re-summed into a full range signal for the output? Looks like a waste of parts to me.
Passinwind
I know nothing.
- Dec 3, 2003
- 23,079
- 46,050
- Disclosures
- Designer/Toaster Tech @ Passinwind Electronics
It's often cited as being a multiband soft clipping circuit. Haven't yet gotten around to modeling it, too many other rabbit holes beckon.
EXACTLY- the circuit, as you have surmised, does exactly what you have surmised! LOL
It allows for clipping at different points in the audio spectrum, depending on how the instrument (and input gain/eq have been dialed it).
There is a whole story behind this circuit, the designer, and why it is the way it is. I've included a link to the PDF.
(Start at page 39, with the line, "Being a keyboard player")- https://medias.audiofanzine.com/files/yorkvillehistory-471231.pdf
Snake oil or the real deal? Well, let me say that NOTHING sounds like the TS-50B or the Tronographic Rusty Box, IMHO...
If that was the point of it, a control for controlling the clip threshold would have been more useful than having a preamp injecting distortion if it isn't desired.
I guess the prevalence of this circuit today (or lack thereof) is indicative of it's success.
I guess the prevalence of this circuit today (or lack thereof) is indicative of it's success.
Passinwind
I know nothing.
- Dec 3, 2003
- 23,079
- 46,050
- Disclosures
- Designer/Toaster Tech @ Passinwind Electronics
I did an onboard preamp similar to that a few decades ago for slide bass OD happiness. Still my favorite DIY bass distortion noise toy of all those I've built, and something I plan to revisit once my new slide bass gets put together.
Mr. Foxen
Commercial User
- Mar 22, 2004
- 13,004
- 4,741
- Disclosures
- I play it all. Whatever works for the gig. Q+
I only tried that unit ONCE. But it left a lasting GOOD impression with me. I have not forgotten
