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Wednesday, January 15, 2014

211 Drives 211, Part 2


Assembly of the 211/211 amplifier has begun. The metal plates for the internal construction are done. These will carry all the parts and will be stacked in a sandwich fashion. As mentioned in the first part, this time a completely new chassis design will be used. Even a new shape. It will be round:

The photo above shows the top plate with the tubes plugged in.

These are all the metal plates for the sub assemblies for the amp:

Cutouts for sockets, capacitors, connectors, etc. And screw holes for transformers and chokes.

After the parts are attached it looks like this:

These are the assemblies with output and interstage transformer (left) and the last stages of the B+ filtering. Oil caps for the filtering and ultra path connections.

Capacitors are mounted to the plates with aluminium rails on the under side:

Filament and B+ chokes are on the bottom plate (left):

The bottom plate also carries all connectors. Input transformer and bias resistors are mounted on the underside of the top plate (right).

The Connectors will be accessible from the bottom:

Stay tuned for updates as the construction progresses.

Best regards



  1. Very cool, Thomas!

    Now i'm extremely curious how it looks when finished...

    Have fun building it,

  2. Very excited to see your new chasis design!