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Late BTO atop Early BTO

Late BTO
(circa '72)
atop
Early BTO (1967)
(LB260D/B260D)


The late version BTO incorporated some important changes. The chassis was mounted to the bottom of the cabinet and the front panel had holes and a grille cloth; all done to improve cooling.
Dedicated lead and bass versions were no longer available, replaced by a single "LB" version.