All cabinets are made with high-grade multi-ply poplar and are glued,screwed and sealed internally with special compounds to ensure that allyou hear is the sound of your bass. The Standard cabinets use onlycustom woofers that have been designed through collaboration betweenMarkbass and B&C Speakers. We truly believe these are the bestspeakers in the world! The Standard series is notable for itsincredible power-to-weight ratio and unparalleled performance. In allour new cabinets we use a custom 1″ HF compression driver with horn.