This is the way to go to increase the speed. Try 3k3 or 2k7 and see if that gets you where you want to be. Note that you can lock up the lamp if you try to get it too fast.
Haha so if 100k gave you unity then 470k gives you a boost, right?So I confirmed the resistors labeled in my OP as R14/15 are correct.
Just finished up.
Replaced R4 with 470k and R14/15 with 2.7k.
Haha so if 100k gave you unity then 470k gives you a boost, right?
I trust your values but I'll definitely socket those resistors when I build my Electrovibe, you never know, with different rigs pedals might behave differently. Also I have way too many sockets, need to use them eventually
What is the bi-color led mod for? Is it supposed to flash at the same rate of the lamp?
Can we talk biasing a bit? I now have 2 Univibe pedals in my arsenal, both with internal biasing arrangements.
How are you guys setting yours? What do you listen for? What is it you are after when biased "properly"?
I have built a couple vibes now and I use Brian's method:
The GAIN and OFFSET controls are interactive. Use this procedure to calibrate the lamp • Turn Intensity and Volume controls all the way up. Set the Speed control at about half-way. • Turn the GAIN control up until you get moderate, but not overly bright lighting of the lamp. • Now adjust the OFFSET control to find the sweet spot for the vibe where you get the most lush and swirly sounds. The OFFSET will set the lower floor for the lamp brightness. High amounts of offset result in a lamp that goes fully off at the bottom of its sweep. Moderate and light offset means the lamp will pulse but never go fully dark. You will probably find yourself adjusting the GAIN and OFFSET a few times until you get the precise sound you want. I set my lamps to go fully dark to moderate brightness and get great results with that. Be careful when adjusting the trimmers so that the lamp does not blow. I have yet to do this in any build no matter where I set the trimmers, but it is possible to do. Lastly, you should consider turning off your power supply or disconnecting the DC jack when not in use. This will preserve the life of the lamp considerably
Anyone think of implementing an expression option yet? I’m thinking I could get away with a pair of switched jacks connected to the two gangs of the rate 2 pot, and using a 100k dual expression pedal such as the Boss EV-3 with both jacks in use. I thought about using either a TRRS jack or a DIN jack and then creating my own dual gang expression pedal, but I don’t believe a switched DIN jack exists, and I can’t find a switched TRRS jack that has an isolated sleeve connection. Of course depth is an issue, but I think I have it worked out in a way where that won’t be an issue.