4-4-0 Studio Amplifier Project
[classic projects]
[current version] [testing version] [old
versions]
Overview
The 4-4-0 Studio is a 2W, push-pull amplifier with a single channel
preamp. This amp is very responsive to the player and cleans up
will by just backing off on the guitar's volume. As with the
other Studio projects on AX84, should this amplifier be coupled to a
AX84 Core Cabinet loaded with an efficent 100dB or better speaker, and
then cranked to 10, it will make
your ears ring.
This project is intended for those who have built amps before.
The circuitry, while deceptively simple, yeilds an amp that is at the
threshold of stability, and as such, it is very sensitive to things such as
component choice and wire placement.
Tone goes from sparkling clean, to smoothly overdriven, to
semi-saturated distortion, depending on
pick attack and guitar volume setup. Responds very well to common
pedals yet still and
retains your guitars tone.
Features
- 3 stage hi-gain 12ax7 based preamp.
- Bass, Mid, and Treble tone controls.
- 12AX7 long-tailed pair type phase splitter.
- Complete NFB loop that includes a Presence control.
- 6SN7GTB dual triode in class AB push-pull configuration providing
approximately 1W of power clean, and 2W at full tilt.
Skill Level: intermediate --- Status: Ready to
Build.
Before using these materials, please read our terms
and conditions.
Is this area looking a little skimpy? Looking for older materials
and
soundclips from previous version? Check out [the
older versions]
