Is BK Butler really making these by himself? Has anybody opened one of these "limited production" models up?

https://www.ebay.com/itm/TUBE-DRIVER-NE ... 3f1ee449eb

This is my completed forum vibe powered by a 9V DC supply. The output of the charge pump (daughter board to the left) feeds into the regulators (right) and from there to the board. Forum vibe guts.jpg These are the vero and the corresponding build of the charge pump Power_for_univibe_1054 copy.pptx ...

Madbean: when will you have more boards available?
Regards
Costantino

Diamond
thank you, I did not notice,

I'll try adding the cap
Costantino

On a different note, I was impressed to read in the analogman effect book the very complimentary remarks of Fumio Mieda, the inventor of the univibe, concerning your technology of the Univibe article. I was not aware of it and would like to congratulate you! Keep up the good work! We all appreciate...

Good to know, it's always a pain to have different power adaptors for each effect. On a different note, I was impressed to read in the analogman effect book the very complimentary remarks of Fumio Mieda, the inventor of the univibe, concerning your technology of the Univibe article. I was not aware ...

Thank you RG, running it from 9V is an attractive possibility. Why is the inverter-doubler needed? Could you run it from a 1044? Theoretically one chip (100mA) feeding two regulator would suffice. Correct?
Costantino

This is a power supply for the Forum Vibe. I started from the schematic in the Forum Vibe pdf (thank you Brad!). I used an unregulated wall wart providing 19V DC. Played with the size and placement of the filter capacitors to eliminate the AC hum. The phase stage seems to need the cleanest power and...

yes indeed, combining the power supply is a great option, nice planning. I really liked the flexibility afforded by the FV board.

I used the 7532s from SB. SB also has the rev. audio dual pot. As for sound clips, I need to get working on it!
thanks
Costantino

I was wondering what people do for power supplies for univibe-type projects. Has anyone tried running it on 9V power supply and using a voltage doubler and a 15 V regulator? That's a really nice build! Power for it - I always mains power them, using a 15 VA 15V AC secondary transformer, a little 5A...

I built the forum vibe using Brad's board form Classic Amplification. Got the reverse dual audio pot, LDRs, and lamp from Small Bear and used a cough syrup dosing plastic glass lined with aluminum foil as light shield. Works great. I appreciate the usefulness of the trimpots which protect the lamp f...

Thank you for the clarification and congratulations on the new baby (the first few months are quite an experience)!
Costantino

Sundgist: did you have a chance to verify these and to link them to the main board? I have built your excellent vero and would like to add more stages. thank you Costantino Thanks for the compliment. Not verified yet as I havn't had a chance to build them. Have been a bit tied up in a house move an...

2 and 4 extra stages vero layouts. Will be verified when built, but should be OK. Can anyone answer a thought I had while drawing these out. What effect would wiring a different LFO to some stages have? Wierd multi modulated phasing :scratch: http://www.sundgist.talktalk.net/Layout/Causality%204/Ca...

[quote="rocklander"]what advantage does the trim pot at R13 give you? Thanks for asking rocklander, with the trimpot I can dial in the depth that I like; right now the resistance is at 8.9K instead of 33K. I guess, depending on the components tolerance, you can have variations in depth tha...

the effect increases by turning them clockwise. I rechecked and you're right: in this case, inverting the pots didn't have effect at all I did not put them on the silk screen side because they would not fit over the ICs. I see in the pictures you use short legs pots. With long legs, you didn't have...

Costantino, check you pots! If you use right angled ones, you must put them on the silk screen side, otherwise you'll got pin 1 and 3 inverted! In fact, you can put them on the solder side, but need to check pot pinout. Also check your socketed IC's... this little inclination it's usual in this dua...

I would think a spring loaded pump would be the best to remove solder from through plating rather than braid or those squeezy pumps, but I suppose not everyone has them and even then they might not be 100% (although i've always found them to work well). What did you both use? And nice looknig build...

Here is my build using a board provided by Rick, Works great,
Thanks Rick
Costantino

Here is my build of the bad stone using the board. Worked right off the bat. I used panasonic caps throughout. The booster at the end is not in yet. Hard to desolder the components if you make a mistake, I guess is the double sided plating. Sounds exactly like the clips. Thank you for developing and...