UEDIN · 5741
Contrabass valve trombone. Nominal pitch: 18-ft B♭.
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Description
4 valves. Technical description: brass, with upright bell detachable by screwed joint; water-key on main tuning-slide. Valve type: 4 rotary valves in line; cork buffers on rotor arms. Overall size: c 918; bell 262. Sounding length: minimum 5526. Bore: mouthpipe at c 40mm from mouthpiece receiver (minimum bore) 12.8; m.t.s. at c 510mm from mouthpiece receiver, tuning slide bore 16.0; centre of valve cluster at c 1353mm from mouthpiece receiver, v.t.s. bore (4,3,2,1) 17.0; at 2763mm from bell end, c 22.85; at c 1152mm from bell end, 32.3. at 32.9mm from bell end, 160.5. B = 0.53. Bell cutoff = 700 Hz. Dia of mouthpiece receiver: m.r.t. 14.5 - 13.6. Inscribed on bell: five pointed star / emblem of lyre (or jews harp) / "PREMIATO STABILte. / B. CAZZANI e Co. / MILANO / ESPORTAZIONE MONDIALE" / five pointed star / ellipse containing partly effaced "A RAMPONE / Ditte Riunite / B. CAZZANI & Co." Decorative features: mother of pearl touchpieces.
Measurements
c|918; bell 262.