Description Model No. Depth of Cup Approx. Cup Dia. Rim Shape Description 3S Shallow 16.64mm Medium wide. Slightly flatter rim face than standard Bach 3C. Large diameter mouthpiece with a shallow cup. Special backbore helps facilitate the high register. 5S Shallow 16.31mm Medium wide. Slightly flatter rim face than standard Bach 5C. Medium large diameter mouthpiece with a shallow cup. Special backbore helps facilitate the high register. 7S Shallow 16.00mm Medium wide. Slightly flatter rim face than standard Bach 7C. Medium diameter mouthpiece with a shallow cup. Special backbore helps facilitate the high register. 10HS Shallow 15.11mm Medium wide. Slightly flatter rim face than standard Bach 10-1/2C. Smaller diameter mouthpiece with a shallow cup. Special backbore helps facilitate the high register. 3MV Modified “V” 16.87mm Medium wide. Slightly flatter rim face than standard Bach 3C. Large diameter mouthpiece with a modified “V” cup. Provides a fuller sound than the “S” cup. Special backbore helps facilitate the high register. 5MV Modified “V” 16.54mm Medium wide. Slightly flatter rim face than standard Bach 5C. Medium large diameter mouthpiece with a modified “V” cup. Provides a fuller sound than the “S” cup. Special backbore helps facilitate the high register. 7MV Modified “V” 16.23mm Medium wide. Slightly flatter rim face than standard Bach 7C. Medium diameter mouthpiece with a modified “V” cup. Provides a fuller sound than the “S” cup. Special backbore helps facilitate the high register. 10MV Modified “V” 15.34mm Medium wide. Slightly flatter rim face than standard Bach 10-1/2. Smaller diameter mouthpiece with a modified “V” cup. Provides a fuller sound than the “S” cup. Special backbore helps facilitate the high register.
