Ergo and Ergonomics

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Ergo and Ergonomics

Postby brian » Mon Jun 08, 2009 6:56 am

Ergo will serve as our universal amplifier chassis. The Ella, LD Stereo, Joplin, and Lux can all be built on this chassis.


Mechanical Ergonomics

* Around: Bamboo Wood front and side panels. This wood is very hard, resistant to moisture and has a great tactile quality. It's natural resonance has a musical tone. Bamboo wood is renewable and typically harvested every 4 years. Back panel is aluminum and (left to right) has IEC connector, provision for both RCA and XLR inputs, 4 speaker binding posts

* Left: 3 Power transformers (1 main and 2 filament) are mounted on the left and lineup with the IEC input. Terminal blocks are provided for easy voltage configuration, both input and output. There is also space provided to mount 2 of the FCUPS and filament supplies.

* Center: tubes go here (or optionally some standup film caps). Tube sockets are mounted on sub plates and provided for 8/9 and 4pin. So you could have 4 x 6550, 2 x 6922, 2 x 6SN7 for the Ella, or 2 x 5AR4, 2 x 310a, 2 x 300B for the LD91 stereo, or 2 x 5AR4, 2 x EF86, 2 x 5687 and 2 x 300B for the LUX or 2 x 6922, 2 x 6CG7 and 2 x 2A3 for the Joplin. Etc etc

* Right: space for 2 standup 10uf film caps and 2 output transformers

* front: nameplate and push button power switch.

Signal Ergonomics

AC supply currents stay to the left, power and signal meet in the middle and output signal stays to the right

Over the next few weeks we will be rolling out some sample buildups.
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