![]() The IC chip overdrives your guitar’s signal and then sends it to the tube to “color the sound” identically to tube overdrive. If you know the sound of turning your tube amplifier up and getting the tubes to sag and create distortion, then you’ll understand the general concept of this pedal. Left the heater resistor off the vero board, as was previously suggested, and set it up to receive 12VAC external power (no room for a transformer and power socket obviously).Basically, when you run your electric guitar through a Tube Driver to your amplifier of choice, it is essentially acting as if you are running through a small overdriven tube amplifier and sending its overdriven tube signal to your guitar amplifier. Update (): Here’s my own build, in a slightly taller 1590BB enclosure I got from smallbear (I think they call it the 125BB) which gave just enough room for the tube. ![]() Run the 10 ohm resistor (R16) from the 12VAC source (probably a trafo in most cases) straight to the heaters. There’s also been reports of this being quite noisy, and I’m happy to pass on coi2001’s suggested fix leave the heater resistor off the board since that’s the main noise source. ![]() Update (): Thanks to several of you for verifying this one! Don’t do it if you’re not sure how to do it safely. Use a small mains transformer or a good 12v AC power supply, and be careful when playing with mains power. I really should draw a proper diagram for this.ĭo note that this effect requires 12v AC power and not DC like most other effects. The wiring explanation is a bit convoluted as well, sorry. The effect uses a preamp tube of type ECC83 / 12AX7, and I guess you would need some ventilation in your enclosure. I left as much space as I felt was necessary for the large supply caps, but I’m afraid it could still end up being a bit crowded. Here’s an overdrive pedal that uses an actual preamp tube, which is quite exciting.īased on Bajaman’s schematic I created a layout with wiring for the tube pins (since I can’t imagine a tube socket fitting neatly on a piece of vero board). ![]()
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