CHI Brass IR 1 Tuba Mouthpiece

Designed for the Modern EEb Tuba

The IR 1 was developed specifically to create an exceptionally versatile EEb tuba mouthpiece.

Its design blends elements of the CHI Jacobs 2 with features inspired by other successful EEb mouthpiece concepts. Key design features include:

• Comfortable Jacobs 2-based rim
• Medium-depth cup
• Slightly smaller throat
• Gradually flaring backbore

This thoughtful combination allows players to produce a large sound while maintaining excellent control.

Performance Characteristics

The IR 1 performs effectively across a variety of tuba types, including:

• Piston and rotary instruments
• Compensating and non-compensating EEb tubas

Additionally, it can deliver a focused and controlled sound on contrabass tubas when desired.

Sound Characteristics

This mouthpiece is designed to deliver exceptional sound quality with features such as:

• Full EEb tuba sound
• Strong tonal core
• Excellent control
• Clear articulation
• Flexible response
• Focused projection
• Balanced registers

Recommended For

The IR 1 is ideal for the following tuba types:

• Compensating EEb Tuba
• Non-compensating EEb Tuba
• Piston EEb Tuba
• Rotary EEb Tuba
• CC or BBb Tubas when a more focused sound is desired

Specifications

Detailed dimensions and specifications:

• Overall Length: 3.8" / 96.52 mm
• Maximum OD: 1.87" / 47.4498 mm
• ID at 0.060": 1.312" / 33.32 mm
• Throat: 0.317" / 8.0518 mm
• Standard Shank: 0.530"
• A Shank: 0.525"
• Euro Shank: 0.540"

This precise craftsmanship ensures optimal performance and compatibility across various instruments.

A heavyweight version of this exists as well, specifications are similar to above, just a different outer profile to the mouthpiece.