Roger Mayer Vision Octavia  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
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Dingleberry
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Post by Dingleberry »

Got one of these from my friend for a trace. The schematic should be correct. I left out the "millenium bypass-thingy" from the schematic.
It differs a bit from the Rocket series Octavia, but not much. The "tone" control looks pretty unique at least to me.
I haven't been able to build it yet to make an A/B test with the original, but When I do I can confirm it. The pedal sounds actually really good.
Vision Octavia final.jpg
Simplify before you amplify.

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Dingleberry
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Post by Dingleberry »

Some PCB shots.
VisionPCB5.jpg
VisionPCB5.jpg (67.11 KiB) Viewed 2766 times
VisionPCB4.jpg
VisionPCB4.jpg (98.34 KiB) Viewed 2766 times
VisionPCB3.jpg
VisionPCB3.jpg (68.82 KiB) Viewed 2766 times
VisionPCB2.jpg
VisionPCB2.jpg (80.37 KiB) Viewed 2766 times
VisionPCB1.jpg
VisionPCB1.jpg (75.25 KiB) Viewed 2766 times
Simplify before you amplify.

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EmmG
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Post by EmmG »

Thank you for your trace, I've been interested in this one for some time. I just drew up a tone control board to drop in my (2 control version) clone, replacing the 10n between Q2 & Q3, and it works well.
Image

Now I'll do the other mods. Is this right to convert a stock Mayer Octavia?
Image

This is the layout I used:
https://dirtboxlayouts.blogspot.com/201 ... tavia.html

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EmmG
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Post by EmmG »

Correction: the 100k (to ground) present on the original between the diodes and volume isn't on the Vision Octavia trace.

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Blues1911
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Post by Blues1911 »

The point is that I can see 28 resistors on the Vision PCB and only 25 on the schematic (excluding the discarded 100K resistors from diodes to ground).
Unless three resistors are involved in the omitted millennium-bypass, something doesn't match exactly.
Someone has built it?

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