Acetone GT7

The following has been gleaned from a website .
See also
Ace Tone was the predecessor to Roland. They made quite a number of combo organs during the 60's, and are one of the more well-known combo organ brand names. They may also be related to Whitehall - look at the stop tabs on the TOP-5 and compare them to the Whitehall 6640 - they're almost identical. I understand that the vibrato on these is excellent. Ace Tone also had a relationship with Hammond. They were largely (or, perhaps entirely) responsible for the early portables, the X2 and X5.
"The AceTone GT-7 was made by Sakata Shokai (Sp?) in Osaka Japan. Shortly after it was marketed in the U.S. Hammond started marketing combo and portable organs made by Sakata Shokai with the Hammond name. The X-2, X-5 and B-200 were all japanese made. I have obtained parts for my organ both from Hammond and directly from Japan. About that same time the AceTone organs disappeared from the U.S. market. I presume this could have been part of the agreement with Hammond"

The Acetone was designed to run a 147 Leslie, the X5 used a 760 Leslie (which because of it's design, could be stopped, as well as run slow or fast).
The Acetone hookup was in the main keyboard body, so that the user could opt not to use vthe pedal assembly and frame
(the pedals are part of what holds the unit steady.)
The X5 on the other hand, had it's connections in the pedal board, thus limiting the users options.

January 9th, 2003

Looks just like an X5, but has subtle differences.
This is the X5. Note the carry bar and the hinges for the lid. It had straight sides, whilst the GT7 had the B3 look.
Note the round knobs for Volume, Reiteration on the left, and pitch on the right.
Rocker switches for Pedals, and percussion (8,4,2 2/3,2,1). Red Lights in front of keys on top keyboard, indicate which preset (located in panel on lower keyboard) is being used.
More switches for Brass Mute, Vibrato, Reverb and Brilliance, plus the pitch knob.
Drawbars and switches for Monitor Speaker (dropped on the X5), and Leslie fast/slow.
Connections for Pedal assembly (handle carefully), Leslie (again handle with care - power runs through this cable and wrong connection could end in tears), and jack outputs for high and low impedence.
Yes it is true, I used to own one of these things, and I loved it.
I didn't enjoy carrying it though - there was no carry handle or lock on covers.
Hammond made a steel carry handle across the front of the unit, and provided a clip on lid to make the unit more "portable"