Hammer, below is a link to the Bose Forum (topic being a "Model 1 / Model 2 differences?" kind of discussion.
http://bose.infopop.cc/eve/forums/a/tpc/f/867107664/m/8041000005 (Hope the cut n paste link works).
Specs wise...
Model 1:
Weight
* L1� Model I power stand: 35 lb (16 kg)
* L1� Model I Cylindrical Radiator� loudspeaker
o Top Section: 14.5 lb (6 kg)
o Bottom Section: 16.0 lb (7 kg)
* R1 remote control: 0.6 lb (0.27 kg)
* B1 bass module (optional): 28 lb (13 kg)
Dimensions
* L1 Model I power stand: 26.0��W x 26.0��D x 5.0��H (66 cm x 66 cm x 12.7 cm)
* L1� Model I Cylindrical Radiator� loudspeaker (each section):
o Top Section: 43 1/8��H x 3.5��W x 4.0��D (109.54 cm x 8.89 cm x 10.1 cm)
o Bottom Section: 43 1/2��H x 3.5��W x 4.0��D (110.49 cm x 8.89 cm x 10.1 cm x )
* R1 remote control: 2.8��W x 5.6��D x 1.6��H (4.0 cm x 7.1 cm x 14.1 cm)
* B1 bass module: 15.3��H x 10.3��W x 18.0��D (38.0 cm x 25.0 cm x 45.7 cm)
Model 2:
Weight
* L1� Model II power stand: 23.7 lb (10.7 kg)
* L1� Model II Cylindrical Radiator� loudspeaker
o Top Section: 16.3 lb (7.4 kg)
o Bottom Section: 17.4 lb (7.9 kg)
* B1 bass module: 25.1 lb (11.4 kg)
Dimensions
* L1� Model II power stand: 5��H x 10��W x 27��D (12.8 cm x 26.2 cm x 69.2 cm)
* L1� Model II Cylindrical Radiator� loudspeaker
o Top Section: 43 � ��H x 3���W x 4��D (109.86 cm x 8.89 cm x 10.16 cm)
o Bottom Section: 43 3/4��H x 3���W x 4��D (111.13 cm x 8.89 cm x 10.16 cm)
* B1 bass module: 15��H x 10���W x 17���D (38.0 cm x 26.0 cm x 45.0 cm)
(A bit of "specs overkill" regarding Weight/Height...... sorry, but you get the idea)
Hope that helps you in some way.