This page details the construction of an AX84 High Octane style amplifier: www.ax84.com

Features

• Hi-Gain 12ax7 Preamp

• 6BQ5/EL84/SV83 Power Tube in Class-A Single Ended Configuration provides a surprisingly loud 5 watts or so of output power

• Cathode-follower driven Bass, Mid and Treble tone controls allow you to shape your sound. Alter the values of the components in the tone stack to tailor your sound.

Many thanks to Ramiro Silva for his excellent construction web page with plans, photos, the works. Ramiro is a gifted amp builder with extraordinary attention to detail.

See his amps website here:  www.silvatone.bravepages.com

CONSTRUCTION

February 15, 2006 (0.5 Hours)
Cumulative build time, 13 hours

Surprisingly it only took about 30 minutes to finish soldering the board. I built a ground buss bar out of some thick copper wire. Sanding off the varnish took about 5 minutes. The main focus was to make sure each joint was soldered well and all was wired correctly. The board is hereby deemed complete.

FINISHED BUILDING THE CIRCUIT BOARD

BEFORE: The board has only been soldered on the "hot" side (top row of turrets in this photo). The grounding buss bar is not in place, and none of the joints in the lower row of the photo have been soldered.

AFTER: I've added a copper ground buss. Click on the photo for a larger version. All the ground turrets have been soldered, as have all the others. The board is finally complete. I'll start painting the chassis tomorrow. I know it looks great shiny, but this build is going to be gloss white. I'll build a shiny one in the future.

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