KEF T15

Little is documented about the KEF T15. The Archive's sources don't even settle what it was - a complete loudspeaker model, a driver sold for DIY use, or just an internal KEF component code. The one solid reference is in Audio-Collection (1964, p.35). Its review of the KEF Duette names the T15 as that system's high-frequency driver: a small dome tweeter roughly an inch and an eighth across, paired with the B139 rectangular bass unit. The Duette was a compact reflex-loaded system measuring 24 × 15 × 9 inches and weighing 48 lb. It was rated at 15 watts maximum, had a fundamental cabinet resonance of 48 c/s, and sold in the UK for £39.19.0.

Later coverage in Amateur Tape Recorder (September 1966, p.33) was about the complete Duette, not the driver. It praised bass that seemed to radiate from all around the enclosure, whether corner- or wall-placed, and reported genuinely good stereo results (p.32). No source examined here treats the T15 as a standalone product. No separate T15 literature, specification sheet, or pricing has surfaced. As far as the surviving record shows, the T15 is a tweeter known through the system it was built into.

Known facts

T15: small dome tweeter, approximately 1⅛-inch dome (per Audio-Collection, 1964)
Used in the KEF Duette alongside the B139 rectangular bass unit
No standalone T15 specifications, production years, or pricing found