Devon,
I have a pair of 1977 Tannoy 15s (HPD 385A with Alnico magnets) I hear they work best in open baffles or infinite baffles. Mine are in the Arden reflex enclosures. I am not very happy with the sound, even after replacing the HF in line caps with copper foil in oil and replacing all internal wiring. The highs, in particular, are crude sounding. Do you have a new crossover design or any tips you could pass on to improve sound?? I am on the point of replacing them with PHY open baffle or even Fertin open baffle. I have also considered the Bastanis Prometheus Airforce.
Russell Dawkins