Construction of the Atom Smasher Mk II began in July 2007. The initial steps included fabrication of turret-loaded boards and installation of components. Click on thumbnails to see full sized (1600 X 1200) images.

G10 boards w/turrets	Completed circuit boards

Construction of the chassis was completed in mid-August. The chassis was fabricated by Mike Schuette with some help from Mason Wolak. The images show the chassis with tube sockets, grommets, and wire loops mounted.

Top view of chassis	Underside view of chassis.

The first step in preparing the chassis was to mount the transformers, AC mains and fuse, then wire them to the mounted hardware. 1/2" standoffs were also mounted to prepare for inclusion of the circuit boards.

Front view after mounting and wiring transformers	Back view after mounting and wiring transformers
Wiring of AC mains and variable bias pot	Wiring of power switch, standby, and pilot light
Wiring of tube filaments and speaker outputs	Full view with mounted hardware. Now on to the circuit boards!

Once the hardware was successfully mounted and wired into place, the circuit boards were added. Three boards were used, one for power amp rectification, one for power supplies for the power tube and phase inverter, and one for the preamp. These were wired to their respective tubes and variable resistors as per the schematic.

Mounted rectifier and power supply boards	Close up of rectifier board
Power supply board with wiring to 6SN7 power tube and 12AT7 PI	A close up of the wiring for the 6CA4 rectifier tube
Another close-up of the power tube socket and PI socket	Close up on the input jack and voltage dividers for G1 + G2
Wiring of the preamp board to the three 12AX7 sockets	Preamp board to gain pots and a view of the DC drive portion of the circuit

Here's the current state of the amp with the tubes mounted. Cosmetic design is underway. The image also shows the Atom Smasher Mk I, with construction of casing and completed face plate.