Arnold Jacobs 2 Tuba Mouthpiece

Rich Orchestral Sound with Exceptional Versatility

The CHI Brass Jacobs 2 is inspired by a historic mouthpiece from Arnold Jacobs' collection. The original design is believed to date back to a 1930s-era Helleberg, which was later modified. During the 1980s, two copies of this design were made for Jacobs.

The surviving originals and copies are now part of Brian Frederiksen's collection. CHI Brass updated the unique shank dimensions of these historical examples to ensure compatibility with modern instruments while preserving the essential characteristics of the original design.

The result? An exceptionally versatile mouthpiece that delivers a clear, overtone-rich sound on large instruments while also performing remarkably well on EEb and F tubas.

Performance Characteristics

• Combines warmth and breadth with excellent flexibility and response.
• Produces a substantial orchestral sound without becoming overly heavy.
• Responds exceptionally well across the entire range.
• Features a comfortable rounded rim, which serves as the foundation for several other CHI designs.

Sound Characteristics

• Rich orchestral tone
• Clear high overtone structure
• Excellent projection
• Responsive low register
• Singing upper register
• Broad dynamic range
• Exceptional flexibility

Recommended For

Ideal Applications:

• Symphony Orchestra
• Wind Ensemble
• Chamber Music
• Solo Performance
• Brass Band

Ideal Instruments:

• Large CC Tuba
• BBb Tuba
• EEb Tuba
• F Tuba

Specifications

• Overall Length: 3.95"
• Maximum OD: 1.868" / 47.4472 mm
• ID at 0.060": 1.287" / 32.7 mm
• Throat: 0.3236" / 8.222 mm
• Standard Shank: 0.530"
• A Shank: 0.525"
• Euro Shank: 0.540"

CHI Brass Jacobs 2 Heavyweight Tuba Mouthpiece

The Jacobs 2 Heavyweight retains the internal dimensions, rim, cup, throat, and playing characteristics of the standard Jacobs 2 but features the CHI heavyweight exterior shell.

This added mass enhances tonal stability and provides a stronger center, especially at higher dynamic levels, all while maintaining the flexibility and overtone-rich character that make the Jacobs 2 so versatile.

Sound Characteristics

• Rich, centered orchestral tone
• Increased tonal stability
• Strong projection
• Excellent low-register response
• Clear overtone structure
• Greater stability at high dynamics

Recommended For

This version is particularly well-suited for players using large CC and BBb tubas in orchestral, wind ensemble, and other large-ensemble settings.

Specifications

The internal specifications are the same as the standard Jacobs 2:

• Overall Length: 3.95"
• ID at 0.060": 1.287" / 32.7 mm
• Throat: 0.3236" / 8.222 mm
• Standard Shank: 0.530"
• A Shank: 0.525"
• Euro Shank: 0.540"