For those of you lucky enough to have one of the G-610 triaxials, I finally snagged Instruction Book 133 for the original G-610 (also covers the G-610A, I think).  I have it scanned and posted at http://aafradio.org/audio/Jensen_IB133.html for posterity.  It is not in pdf format so be aware that it may take a while to load the 4.5MBytes.  It has the wiring diagrams and A-221 crossover schematic (with component values).  I've been looking for it for quite a while, and am delighted to share it with the community.  I'll try to get around to the manual for the G-610B one of these days - too ehausted after moving my pair of Imperials 85 miles to a new home.   .

Best wishes,
Mike

That cab is smaller than my modded corner cab Imperial sub. Like to know more on how its built.

Nice read !
thanks from a Jensen Imperial lover

Very cool! Imagine how cool you were in the '50s having that "state of the art" system in your listening room to play your "master tapes" on.

As far as the name "Imperial", just look how many totally different things Ford has called a Mustang or LTD.
Or Chevy calls a Camaro or Caprice
Or Pontiac calls a Firebird or Bonneville.
Brand names had power and recognition at one time. Much of that trend has gone the way of those early Mustangs and Imperials.
Thank heaven that some brand names still mean something.