Heavytop models use a completely different principle in not feeding back to the player the vibration of the instrument, transmitting all the energy through the bell. This gives a much more powerful sound when needed, more security in the high register and more control and focus in all registers.
- Available sizes: 0AL, 1AL, 4AL, 4.5AL, 5AL, 5BL, 6BL, 6BS
- Model Number: The first number refers to the cup diameter; the higher the number, the smaller the diameter
- Cup Volume: A – Deep cup; B – Medium cup
- Receiver / Shank type: L – large shank mouthpiece for large bore trombones and euphoniums; S – small shank mouthpiece for small bore trombones and baritones
- Finish: Silver plate
- 0AL: Large shank; 27.42mm cup diameter; 6.09mm rim width; 7.45mm throat; Barrel backbore. Clean low register with accurate attacks.
- 1AL: Large shank; 27.11mm cup diameter; 6.09 rim width; 7.45mm throat; Open backbore. Improved high range and open, free blowing sound.
- 4AL: Large shank; 26mm cup diameter; 6.72mm rim width; 7.38mm throat; Barrel backbore. Deep cup for a very big, open sound and full low register.
- 4.5AL: Large shank; 25.85mm cup diameter; 6.80mm rim width; 7.24mm throat; Barrel backbore. Wider rim for improved endurance and comfort with a big, full sound.
- 5AL: Large shank; 25.73mm cup diameter; 6.64mm rim width; 7.30mm throat; Barrel backbore. Full sound with resonant high register. Good choice for orchestral work.
- 5BL: Large shank; 25.73mm cup diameter; 6.64mm rim width; 6.87mm throat; Medium backbore. Medium-deep cup with a flexible high range. Excellent for principal players.
- 6BL: Large shank; 25.40mm cup diameter; 6.26mm rim width; 6.66mm throat; V-type backbore. Excellent high register with a crisp clear tone.
- 6BS: Small shank; 25.40mm cup diameter; 6.26mm rin width; 6.66mm throat; V-type backbore. Brilliant high register with increased endurance and intontation.
| Color | 4.5AL |
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