I'm having some new cabinets built for my BTH K10A's
Steve who's constructing them for me is doing a magnificent job. Steve has based them on design similar to a rectangular Tannoy GRF but scaled up to meet his design calcs for the drivers As of yesterday one was up and running and Steve undertook some frequency sweeps.
Cabinet stained, waxed and awaiting polishing and full length grille
Fron to K10A & Crossover
Rear -As you can see the bass driver is a UK version of the Jensen 18"
The frequency curves below have no correction applied
Full sweep at the listening position. Bass is reasonably flat to 20HZ
Cabinet with LP for size comparison. Weight is approx 95 Kg each
Steves hoping to have the other one up and running today so he can take some measurements of the stereo pair.