Bach Commercial Series L5515S 5S Trumpet Mouthpiece

The Commercial series was designed specifically for lead trumpet players looking for greater depth of sound and volume when playing in higher registers.

The Commercial series starts with a Classic cup, but uses a 27 throat, a 24 backbore and increases the outside mass. Commercial mouthpieces are only available in Shallow and Medium V shaped cups. The Bach 5S is a medium large diameter mouthpiece with a shallow cup. The special backbore helps facilitate the high register.

• Cup Depth: Shallow
• Approximate Cup Diameter: 16.31 mm
• Rim Shape: Medium wide. Slightly flatter rim face than standard Bach 5C.