The Heil tweeter used on this speaker, designed many years ago by Dr. Oskar Heil, uses a totally different method of reproducing the highs. It doesn't require a huge coil, and it can be built so that its resonant frequency is outside the frequency band it needs to reproduce. The tweeter operating down to an astonishing 700 Hz! It is inherently bidirectional, and so it sits atop the enclosure rather than in it. It is complemented by a 25 cm woofer which is mounted facing upwards to ensure the best phase relaitionship with the high frequency HEIL A.M.T. The reflex port is on the bottom, and so the wooden feet supplied are not an option. The tweeter itself looks hand-made, and in fact it is. The Kithara looks much better with its two cloth grilles on, and the woodwork is strikingly handsome. The Kitharas, with their 94 dB rating, needed only a fraction of power.
Specifications:
1 - A.M.T. mid range - tweeter 700 - 23000 Hz & 1 - 25 cm bass unit 28-700 Hz.
Frequency response: 28-23000 Hz
Sensitivity: 94 dB 1 W 1 meter
Impedance: 4 ohm minimum
Cabinet finish: oiled walnut, cherry, or black, Maple wood veneer
Dimension: 40 x 40 x 110 cm including A.M.T.
Weight: 35 Kg.