SDM Chromatic Extension Alto Carillon CAC-9Enhance the versatility of your Alto Carillon with the SDM CAC 9N Chromatic Extension. Designed to add the missing semitones, this extension allows for full chromatic play across the instruments range. Built with high quality resonator bars for rich, clear tones, it integrates seamlessly with your existing Alto Carillon for expanded musical possibilities. Ideal for music classrooms, ensembles, and professional performances.