Dual-Use Trombone

Dual-Use Trombone
Trombones come in a variety of bore sizes. When we say ‘Bore Size’ we refer to the inside dimension of the tubes. Some trombones are as small as .480 thousandths of an inch. Some are as large as .580 thousandths of an inch.The most common trombones used in Commercial, Studio or Jazz work are .508”, sometimes .500” or smaller. These trombones are used most frequently in the upper range, require a tenor shank (small) mouthpiece, and have a bright projected sound. The typical student trombone falls into this same category.In the Symphony Orchestra and many concert bands, the preference is for a larger bore trombone that requires a bass shank (larger mouthpiece) and creates a darker, larger sound. More often than not, these instruments have a valve that allows the player to play chromatically down an octave or more. These instruments, except for the bass trombone, a special instrument, are .547” in the bore.The Symphony Tenor trombone, because of the larger bore and bass shank mouthpiece is more work in the upper register. And although it makes a larger, darker sound, it does not have the penetrating edge of the small bore trombone and so is rarely used in Commercial or Jazz settingsWhen stepping up from their beginner instruments, most students, on advice from the band director or private teacher, purchase the Symphony Tenor Trombone. And so when dad just spent $$$ on a new trombone, he expects to see Johnny use it in the Jazz Band concert. But Johnny has lost his upper range and projection.Inside the handslide, is a special tapered tube called a mouthpipe or venturi tube. This tube is swaged or machined to receive the mouthpiece. It also tapers from the smallest point after the mouthpiece up to the bore size. This taper is crucial to the sound and intonation of the trombone. Without this taper, the trombone blows like a piece of plumbing. Many manufacturers make this tube removable because individual players have preferences for different tapers. This tube is typically about 6” to 8” long. It is a smaller diameter on the Small Bore Trombones and larger on the Symphony Tenor Trombones.What W. Nirschl has done with the Dual-Use pipe is make a pipe with the small receiver and taper of a popular Small Bore Trombone and then continue the taper until it fits the Symphony Tenor bore. (patent pendingWhat we’ve done at W. Nirschl with the Dual-Use pipe is make a pipe with the small receiver and taper of a popular Small Bore trombone and then continue the taper until it fits the Symphony Tenor bore. (patent pending)The results surprised even us. We expected a feel and response approximating a small bore tenor. What we did not anticipate as how the sound also changed to approximate a small bore tenor.And new in 2009The Dual-Use Trombone with an Axial Valve and a Acoustic Annealed rose brass bell.See setails at: http://www.wnisrchl.com/See a demo at:http://www.wnirschl.com/img/nirschl_video.jpg