Guitar Tube Amp
One, or both of the coupling caps could be changed to 0. Of course, that's one advantage of the 12AXit's two triodes in a single tube. When it comes to actually seating the valves, some wiggling into place will be required, especially the first time the sockets are used.
Through a 2x10 cab with the variable voltage dialled right down it had enough gain - via the treble boost switch - to make a decent practice amp for classic rock tones.
How to Build a Cigar Box Guitar Amp Guitarworld
Image 9 of I didn't feel the tone had quite the body as with these values. There might be easier ways to do it, but it's a nicely-hidden joint.
All non-electrolytic caps should be rated for V, since they are usually in the signal path. Voltage of 6DG6GT: If you're a believer, knock yourself out ;-. Amplifier design is something we learn. Here's a secret: Reply 4 years ago on Introduction.
But it fits fine in the cabinet. For wires that have runs together, twist the wires to tidy them, or, if there are several in a clump, then use a zip-tie to gather them up and out of your way. The sheet was then held in between the clamping sides of a "Workbench," and bent downward to a 90 degree angle, with a heavy steel carpenters square. The grid-leak resistors in a cathode bias amp are usually in the range of K - K. In theory, more stages equals a thicker, smoother type of distortion--without the "hard" breakup common to transistor circuits.
That requires a "phase inverter" stage, a necessary complication.
The DIY Musician: Build Your Own One-Tube Amplifier — Vintage Plans from Guitarworld
Other more conventional types would probably make the build sound more like a typical Fender and reduce some of the thick tones. At this point, I've fixed several multi-channel tube amps; amps that were much cheaper to buy busted and fix than it would cost to purchase the parts alone.
SeanT36 2 years ago. It's a bit harder to get max volume from a "classic Class A" design single-ended, cathode bias, etc. Many are rated for 2. And honestly, an LC filter does a much more efficient job of smoothing out the supply ripples in a single stage than an RC filter does. I am on a mission myself to try to put together something truly affordable and somewhat easy to assemble, yet usable as a guitar amp.
Tube name: The simplest way to achieve this "negative bias" is to raise the cathode voltage sightly--that's the job of the cathode-bias resistor. And nice sound too. Wire that backwards, and tap volts.
Oh, and I did add a negative feedback loop.