1960's Tannoy Orbitus Speakers Gold Monitor 12" LSU/HF/12/8 - Very nice Description: Up for bid is this vintage pair of Tannoy Orbitus 12" Gold Monitor Dual Concentric Loudspeakers. Circa 1960's, these one owner speakers are in very nice condition as shown in photos. The s peakers are 12" LSU/HF/12/8 Gold Monitors, with serial numbers 102657 and 106818, and the enclosures with crossovers are serial numbers 0-1801 and 0-1805. The cabinets measure approx. 29 3/4"H x 16 3/4"W x 16 3/4"D, and are in overall very nice condition,