 Custom Trombone Series
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Custom Trombone Series
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The Custom Series line of trombone mouthpieces evolved out of the work we have done over the past 25 years for leading symphonic and commercial players. We blended together those aspects that we observed to be most valued and came up with the Custom Series. |
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Blank Style Choice of weight distribution in the form of blank style is a major element in the design of the Custom Series. Players can choose between the light blank style or the heavier version. The light blank offers quick response and easy manipulation of timbre. The heavy blank offers stability and a consistent, reliable core center of sound that can stand up to the rigors of orchestral playing.
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Model # |
Inner Diameter | Outer Diameter | Cup Depth | Shank Options |
| BT #1 | 1.123" or 28.524 mm | 1.593" or 40.462 mm | 1.533" or 38.938 mm | Large Shank Only |
| BT #1.25 | 1.116" or 28.346 mm | 1.591" or 40.411 mm | 1.450" or 36.830 mm | Large Shank Only |
| BT #1.5 | 1.087" or 27.609 mm | 1.549" or 39.344 mm | 1.439 " or 36.550 mm | Large Shank Only |
| BT #4 | 1.027" or 26.085 mm | 1.551" or 39.395 mm | 1.485" or 37.719 mm | Large and Small Shank |
| BT #4.5 | 1.008" or 25.603 mm | 1.545" or 39.243 mm | 1.485" or 37 719 mm | Large and Small Shank |
| BT #5 | .997" or 25.323 mm | 1.552" or 39.420 mm | 1.314" or 33.375 mm | Large and Small Shank |
| BT #6 | .985" or 25.019 mm | 1.543" or 39.192 mm | 1.314" or 33.375 mm | Large and Small Shank |
| T 1 | .993" or 25.222 mm | 1.544" or 39.217 mm | 1.217" or 30.937 mm | Large and Small Shank |
| T2 | .972" or 24.688 mm | 1.487" or 37.769 mm | 1.285" or 32.639 mm | Large and Small Shank |
| T3 | .947" or 24.053 mm | 1.495" or 37.973 mm | 1.060" or 26.924 mm | Large and Small Shank |
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Bores and Back Bores There are two options in the Custom Series line: Standard and Symphonic. The Symphonic models have larger bores and back bores than the standard models do. (see chart below for bore sizes). Additionally, the Symphonic models have chamfers added to the end of the shank. A chamfer is a small angled surface added onto the end of a shaft around the opening of a hole. Its purpose is to reduce the step between the end of the mouthpiece and the lead pipe which reduces the turbulence at the meeting point in effect elongating the back bore right into the lead pipe. |
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Bore Sizes for Standard and Symphonic models |
Model # | Standard Models | Symphonic Models | ||
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BT# 1 | .316" | 8.026 mm | .323" | 8.204 mm |
| BT# 1.25 | .295" | 7.493 mm | .302" | 7.671 mm | |
| BT# 1.5 | .290" | 7.366 mm | .295" | 7.493 mm | |
| BT# 4 | .277" | 7.036 mm | .281" | 7.137 mm | |
| BT# 4.5 | .277" | 7.036 mm | .281" | 7.137 mm | |
| BT# 5 | .277" | 7.036 mm | .281" | 7.137 mm | |
| BT# 6 | .277" | 7.036 mm | .281" | 7.137 mm | |
| T1 | .261" | 6.629 mm | .266" | 6.756 mm | |
| T2 | .228" | 5.791 mm | .234" | 5.944 mm | |
| T2 large shank | .246" | 6.248 mm | .246" | 6.248 mm | |
| T3 | .228" | 5.791 mm | .234" | 5.944 mm | |
| T3 large shank | .246" | 6.248 mm | .246" | 6.248 mm | |
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Rim and Cup Shapes As a quick explanation of the terms we use to describe our cups, the term "Ledge" is used to define that point of the cup where it begins to taper in towards the bore. The sharper the angle of the ledge, the more "C" shaped the cup will become. Of course, the Ledge is not the only factor to determine cup shape. The "Throat" area of the cup, or what can be described as the entrance to to bore of the mouthpiece, also has a tremendous influence on the overall shape of the cup. The Throat area has an enormous influence on regulating the flow of the air. It's the balance between both of these aspects that gives the Custom Series its truly unique qualities.
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BT #1 This is our largest model. The internal dimensions of this mouthpiece are so large that it is only offered on the heavy blank style. The cup volume is similar to the Schilke 60 or Bach 1G, however, the cup shape is more "V" shaped with the throat area sloping more gradually down to the bore. The rim is wider than most other mouthpieces with this large of an inner diameter. The contour is a traditional contour with the high point on the inside gradually sloping outward.
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Inner Diameter = 1.123" or 28.524 mm Outer Diameter = 1.593" or 40.462 mm |
 The Cup Depth for this model measures: 1.533" or 38.938 mm
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BT #1.25
This mouthpiece is significantly shallower than the #1 with a unique blending of cup shape and depth. The bottom of the cup (or ledge of the cup) is quite high for a large mouthpiece, but the throat area opens up to be quite ample. This provides quick response and great flexibility while still providing a large sound.
The rim is slightly thinner than our other models with a crisp bite to it.
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Inner Diameter = 1.116" or 28.346 mm Outer Diameter = 1.591" or 40.411 mm |
The Cup Depth for this model measures: 1.450" or 36.830 mm
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BT #1.5 The cup on this model is a variation on the 1.25. The Ledge is once again set high, but in this case the throat area is tighter. This reduces the amount of overall volume and adds a level of control appreciated by most players. The rim has a traditional contour with the high point towards the bite gradually sloping off. |
Inner Diameter = 1.087" or 27.609 mm Outer Diameter = 1.549" or 39.344 mm
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The Cup Depth for this model measures: 1.439 " or 36.550 mm |
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BT #4 The overall cup volume for this mouthpiece is closest to that of a Bach 4G, however the throat area is more opened making this more of a "V" shaped design. The "V" shape can add a hint of brightness to the tone. The rim is a bit wider than standard rims with a soft, rounded bite.
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Inner Diameter = 1.027" or 26.085 mm Outer Diameter = 1.551" or 39.395 mm |
The Cup Depth for this model measures: 1.485" or 37.719 mm |
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BT #4.5 The same cup and rim shape as the #4, just with a slightly smaller inner diameter. |
Inner Diameter = 1.008" or 25.603 mm Outer Diameter = 1.545" or 39.243 mm |
The Cup Depth for this model measures: 1.485" or 37 719 mm |
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BT #5 The overall cup volume for this mouthpiece is closest to that of a Bach 5G, however the throat area is more opened making this more of a "V" shaped design. The "V" shape can add a hint of brightness to the tone. This rim has a bit of flatness to the top and is very rounded on the bite. It is known for its extreme level of comfort. |
Inner Diameter = .997" or 25.323 mm Outer Diameter = 1.552" or 39.420 mm |
The Cup Depth for this model measures: 1.314" or 33.375 mm
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BT #6 Same cup shape and rim as the #5 with a slightly smaller inner diameter. |
Inner Diameter = .985" or 25.019 mm Outer Diameter = 1.543" or 39.192 mm
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The Cup Depth for this model measures: 1.314" or 33.375 mm |
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T 1 The T1 is our most popular design for large and small shank trombone. The cup is a large sloping "V" shape. The back bore is slightly tighter than most other equivalent models. Players enjoy the benefit of the large cup - large sound profile, but with just a hint of added resistance for improved control and response. This is a very rounded rim. |
Inner Diameter = .993" or 25.222 mm Outer Diameter = 1.544" or 39.217 mm |
The Cup Depth for this model measures: 1.217" or 30.937 mm |
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T 2 The T2 has a shallow cup in that the ledge of the cup slopes in quickly, however the throat area is very open. This is a great combination allowing greater ease in the upper register but enough cup volume to fill out the sound. This is the flattest rim of the series with a crisp bite to it. |
Inner Diameter = .972" or 24.688 mm Outer Diameter = 1.487" or 37.769 mm |
The Cup Depth for this model measures: 1.285" or 32.639 mm |
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T 3 A shallow cup with a tight throat. The shape is very "C" styled which adds darkness, slowing the air to help compensate for the shallowness rounding out the tone. This rim is rounded and a tad narrower than the rim of the T1. |
Inner Diameter = .947" or 24.053 mm Outer Diameter = 1.495" or 37.973 mm |
The Cup Depth for this model measures: 1.060" or 26.924mm |
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