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Large Shank Tenor & Bass Trombone Mouthpieces
Catalog No. 341
Model No. Depth of Cup Approx. Cup Dia. Rim Shape Throat Backbore Description
1G Deep 28.00 mm Medium thin, well rounded. .319" 800S Extra large and deep for extraordinary power and depth of tone. Among the largest and most powerful bass trombone mouthpieces produced today.
1 1/4G Deep 27.50 mm Medium thin, well rounded. .276" 429 Cup diameter is smaller than No. 1G, but still very large and deep, with the sonority preferred by the modern American school.
1 1/4GM Deep 27.50 mm Medium thin, well rounded. .319" 800S Same rim and cup as No. 1 1/4G, but with a larger throat and backbore for large, powerful sound, well in tune.
1 1/2G Deep 27.00 mm Medium wide, well rounded. .276" 429 A large mouthpiece with powerful tone in the low register and great carrying power. For many years, the standard mouthpiece for the serious bass trombone player.
1 1/2GM Deep 27.00 mm Medium wide, well rounded. .319" 800S Larger throat and backbore than the No. 1 1/2G results in less resistance, larger dynamic range, deeper, warmer sound.
2G Deep 26.75 mm Medium narrow. .276" 429 Deep, full, resonant tone. Big low register even through the pedal tones.
3G Deep 26.26 mm Medium wide, well rounded. .276" 429 Same rim shape and diameter as No. 3 small shank tenor trombone, but with a deep bass trombone cup, throat, and backbore to facilitate pedal tones.
Model No. Depth of Cup Approx. Cup Dia. Rim Shape Throat Backbore Description
4G Deep 26.00 mm Medium wide, slightly rounded. .276" 429 Same rim shape and diameter as No. 4 small shank tenor trombone. A versatile, large diameter mouthpiece especially useful when only one trombone is used for both the upper and very low register.
4GB Deep 26.00 mm Medium thin, very well rounded. .276" 429 Same cup, throat and backbore as the No. 4G with a more rounded rim.
5G Deep 25.50 mm Medium wide, semi-flat. .276" 429 Same rim shape and diameter as No. 5 small shank tenor trombone. Similar playing characteristics to No. 4G with a slightly smaller cup diameter.
5GL Medium deep 25.50 mm Medium wide, semi-flat. .276" 429 Old style, shallower model than No. 5G, facilitates upper range.
5GB Deep 25.50 mm Medium thin, very well rounded. .276" 429 Same cup, throat and backbore as the No. 5G with a more rounded rim.
5GS Medium deep 25.50 mm Medium wide, semi-flat. .261"
“G”		 420
(modified)		 Shallower “G”-style cup with smaller throat and backbore than No. 5G produces easy high register, slightly brighter sound.
6 1/2A Medium deep 25.40 mm Medium wide, well rounded. .276" 429 Same rim and cup as No. 6 1/2A small shank tenor trombone, but with full bass trombone throat and backbore for a rich, compact sound of large volume.
6 1/2AL Medium deep 25.40 mm Medium wide, well rounded. .261"
“G”		 420 The same cup, throat, and backbore as No. 6 1/2AL small shank tenor trombone but with bass shank. It requires a well developed embouchure.
6 1/2AM Medium
deep		 25.40 mm Medium wide, well rounded. .257"
“F”		 413 The same rim, cup, throat, and backbore as No. 6 1/2AM small shank tenor trombone mouthpiece, but with bass shank.
Osmun Music, Inc.

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