[EdHolland]

You are probably right Ron (about the cabinet size). These were obviously luxury items for the extremely wealthy - simply judging by the list price. 'twas ever thus... A regular 16X console was expensive, this was astromomical!

Now, from what I know about open backed speakers, the size of the baffle (cabinet) does affect the depth of bass - larger = deeper to an extent, but it does seem that the show factor is hard at work here, and it was designed for an exhibition after all.

It is still a really great piece of radio history