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Model D4

Model D4, front viewModel D4, back viewModel D4, horizontal viewInterchangeable Bb/F or F/BbAdjustable thumb leverstandard water key
Model D4, front view
Model D4, back view
Model D4, horizontal view
Interchangeable Bb/F or F/Bb
Adjustable thumb lever
standard water key

The D4 is characterized by an easy, balanced response. The optimized air-flow geometry of the valve system gives the instrument its effortless, virtuoso sensitivity. The fact that the crooks of the F horn are bent in a single piece ensures the optimum air flow to maximize the sonorous F-horn timbre. The long mouth pipe of this instrument also helps give it its smooth, even tone quality.

 

Specifications

Key:Bb – F, easily reversible
Pitch:A-440hz. up to 443hz possible
Bore:12.1mm
Valves:Solid yellow brass conical valves with tapered spindles
Lever action:Minibal
Valve caps:Standard engraved nickel-silver
Thumb lever:Three-dimensional adjustment
Leadpipe:Standard gold brass with a water key and an engraved mouthpiece receiver collar
Water key:Standard on the leadpipe
Cylindrical crooks:Perfect cylindrical calibration
Slides:The hand-lapped inner and outer slides are made of nickel-silver
Braces:Made from the best solid nickel-silver rods available
Bell diameter:310mm 
Detachable bell:Available
Bell ring:Special bronze, for long life and durability
Bell:Single-seam bell tail with a fused spun bell flare. Medium-sized bell throat like that of a traditional Geyer horn
Possible optional finishes:Lacquered, silver-plated, gold-plated
Other options:Adjustable Dürk pinky hook., Dürk hand rest (flipper), additional water key (specify location), different bell flares, engraved nickel-silver bell garland (engraving available only on detachable bell flares)
Hand-hammered options:Hand-hammered bell tail, hand-hammered bell flare (available only on detachable bell flares)
Cases:All horns are priced without a case. Gig bags cases are available: Marcus Bonna, Cardocase, Bags, and others.