Bach Mouthpieces – Trombone Models

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We are always looking for more information on the Bach trombone mouthpiece line through the years. Our goal is to summarize all of the different marketing of these mouthpieces.

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Bach Trombone Mouthpieces – Model Catalog
Catalog No. 341 Trombone
Catalog No. 350 Small Shank Tenor Trombone, Baritone & Euphonium Mouthpieces
Catalog No. K350 Mega Tone® Small Shank Tenor Trombone, Baritone & Euphonium Mouthpieces
Catalog No. K341 Mega Tone® Large Shank Tenor & Bass Trombone Mouthpieces

Model
No.
Depth
of Cup
Approx.
Cup Dia.
Rim
Shape
Throat Back Bore 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.Same cup diameter and rim as the No. 3 tenor trombone mouthpiece, but with a deep bass trombone cup. Full, vibrant bass trombone tone of rich, dark timbre. Ideal for 3rd trombonist in symphonic band or symphony orchestra. Facilitates pedal tones. (1954)
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.
Catalog No. 350 Small Shank Tenor Trombone, Baritone & Euphonium Mouthpieces
3 Medium deep 26.26 mm Medium wide, well rounded. Extra-large cup for players with a robust embouchure.
4 Medium 26.00 mm Medium wide, well rounded. Very large cup; principally used by players having healthy, strong embouchures.
4C Medium shallow 25.75 mm Medium wide, well rounded. Large cup with a brilliant tone. Requires a powerful, natural embouchure.
5 Medium 25.50 mm Medium wide, semi-flat. For players with good, natural embouchures.
Rather large cup. Produces a full, mellow, sonorous tone.
5G Deep 25.50 mm Medium wide, semi-flat. Same as No. 350-5 except for .276″ throat and #429 backbore (same as No. 341-5G but with small shank).
5GB Deep 25.50 mm Medium thin, very well rounded. Same as No. 350-5 except for thin rim (same as No. 341-5G but with small shank).
5GS Medium 25.50 mm Medium wide, semi-flat. Same as No. 5 but with larger “G” throat and #420 backbore.
6 Medium 25.50 mm Medium wide, well rounded. Fairly large cup. For players with a strong embouchure. Full, solid, mellow tone.
6 1/2A Medium deep 25.40 mm Medium wide, well rounded. Slightly larger than medium with standard-size throat and backbore. Rich, compact tone of large volume.
6 1/2AL Medium deep 25.40 mm Medium wide, well rounded. The same rim and cup as No. 6 1/2A, but with a larger “G” throat and #420 backbore for trombonists who strive for a Teutonic tone quality. Recommended for euphonium players who desire a round, mellow tone of great carrying power and substantial volume.
6 1/2AM Medium deep 25.40 mm Medium wide, well rounded. Symphonic model tenor trombone mouthpiece features the same cup and rim as No. 6 1/2A, but with symphonic “F” throat and #413 backbore.
6 3/4C Medium shallow 25.00 mm Medium wide, well rounded. Produces a full, clear, rather brilliant timbre. For trombonists with good, well-trained embouchures.
7 Medium 24.75 mm Medium wide, not too sharp. The ideal mouthpiece for the artist desiring a beautiful, ringing tone with sufficient volume for melody playing.
7C Medium shallow 24.75 mm Medium wide, not too sharp. Designed for players who prefer a medium-large cup to assure a large volume of tone. The rather shallow cup produces great brilliancy.
8 Medium 24.75 mm Slightly wide and flat. Corresponds in cup design with No. 7, but with a wider rim.
Players with heavier lips prefer this model.
8 1/2BW Medium shallow 24.75 mm Very wide, well rounded. For players with heavy lips who need support to prevent the rim from digging. Well liked by musicians who do strenuous work.
Produces lively, brilliant tone with easy high register.
9 Medium deep 24.72 mm Medium wide. Possesses a beautiful, rich, rather mellow timbre.
11 Medium deep 24.70 mm Medium wide. Same style as No. 9 but slightly smaller. Produces a magnificent round tone of great carrying power. An excellent model for euphonium and baritone players.
11C Medium shallow 24.70 mm Medium wide. Same size as No. 11 but with a medium shallow cup for a brilliant ringing tone of large volume.
12 Medium 24.50 mm Medium wide. An excellent all-around mouthpiece. Combines a fine, solid, dark tone, excellent flexibility, great volume and easy response.
12C Medium 24.50 mm Medium wide. Same size and rim as No. 12 but with a more brilliant, crisp tone. The best selling model for all-around playing.
12E Very shallow 24.50 mm Medium wide. This model, designed principally for Eb alto trombone, can be used on Bb trombone or bass trumpet when a brilliant, brassy tone is desirable. Also recommended for use in the extreme high register.
14D Shallow 24.50 mm Medium wide. Well suited for playing in the high register. Very effective for coloratura work.
14 1/2D Shallow 24.50 mm Medium wide. Small, shallow cup and wider rim aid the high register while producing a clear, lively tone.
15 Medium deep 24.40 mm Medium wide. A full-toned mouthpiece of mellow timbre.
15C Medium shallow 24.40 mm Medium wide. Medium shallow cup produces a clear, lively tone. Players with thin lips or weak embouchures will find it helpful.
15CW Medium shallow 24.40 mm Very wide, well rounded. Designed for great brilliancy and resistance to facilitate the very high tones. The wide cushion rim distributes pressure—an advantage to players with soft, fleshy lips.
15D Shallow 24.40 mm Medium wide. Has a rim similar to No. 15C but the shallower cup produces a clear, crisp tone, effective in the extreme high register.
15E Very shallow 24.40 mm Medium wide. Designed for Eb alto trombone but used also by players who continually play in the extreme high register. Also used for bass trumpet where a martial tone quality is desired.
15EW Very shallow 24.30 mm Extra wide cushion, well rounded. The choice of artists who play in the extreme high register for long hours. Produces a brilliant, piercing tone.
Catalog No. K350 Mega Tone® Small Shank Tenor Trombone, Baritone & Euphonium Mouthpieces
4 Medium 26.00 mm Medium wide, well rounded. Very large cup; principally used by players having healthy, strong embouchures.
5 Medium 25.50 mm Medium wide, semi-flat. For players with good, natural embouchures. Rather large cup. Produces a full, mellow, sonorous tone.
5GS Medium 25.50 mm Medium wide, semi-flat. Same as No. 5, but with larger “G” (1 7/64″) throat and #420 backbore.
6 1/2A Medium Deep 25.40 mm Medium wide, well rounded. Slightly larger than medium with standard size throat and backbore. Rich, compact tone of large volume.
6 1/2AL Medium
Deep
25.40 mm Medium wide, well rounded. The same rim and cup as No. 6 1/2A, but with “G” (1 7/64″) throat and #420 backbore, for trombonists who strive for a Teutonic tone quality.
6 1/2AM Medium Deep 25.40 mm Medium wide, well rounded. Symphonic model tenor trombone mouthpiece features the same cup and rim as No. 6 1/2A, but with symphonic throat and backbore.
7C Medium shallow 24.75 mm Medium wide, not too sharp. For players who prefer a medium-large cup to assure a large volume of tone. Rather shallow cup produces great brilliancy.
11C Medium shallow 24.70 mm Medium wide. Medium shallow cup produces a brilliant ringing tone of large volume.
Catalog No. K341 Mega Tone® Large Shank Tenor & Bass Trombone Mouthpieces
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 1/4GM Deep 27.50 mm Medium thin, well rounded. .302″
“N”
800S Same rim and cup as No. 1 1/4G, but with a larger throat and backbore for a large, powerful sound, well in tune.
1 1/2G Deep 27.00 mm Medium wide, well rounded. .277″
“J”
429 A large mouthpiece with a 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. .302″
“N”
800S Larger throat and backbore than No. 1 1/2G results in less resistance, larger dynamic range, Deeper, warmer sound.
4G Deep 26.00 mm Medium wide, slightly rounded. .277″ 429 Same rim shape and diameter as No. 4 small shank tenor trombone. Versatile, large diameter mouthpiece especially useful when only one trombone is used for both the upper and very low register.
5G Deep 25.50 mm Medium wide, semi-flat. .277″
“J”
429 Same rim shape and diameter as No. 5 small shank tenor trombone. Fairly large and Deep, with a dark, mellow tone, favoring the low register.
5GS Medium 25.50 mm Medium wide, semi flat. .265″
17/64″
420 Same rim and cup as No. 5G but with 17/64″ throat and #420 backbore.
6 1/2A Medium Deep 25.40 mm Medium wide, well rounded. .277″ 429 Same rim and cup as No. 6 1/2A small shank tenor trombone, but with a 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. .265″
1 7/64″
420 Same specifications as No. 6 1/2AL small shank tenor trombone but with .265″ throat. Requires well-developed embouchure.

Sources:

© Conn Selmer, Inc.

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