The Blam R12 is a 300 mm 12 inch passive subwoofer built with a steel basket, reinforced cellulose fiber cone, foam surround and cotton damper. It features a 50 mm voice coil on an aluminium former and a 134 mm x 23 mm motor assembly with a machined extended T yoke for reliable low frequency performance.

Designed for use in sealed or bass reflex enclosures, the R12 is optimized for 20 L to 40 L sealed boxes and has recommended bass reflex tuning examples at 30 L and 50 L. This passive driver requires an external amplifier matched to a 2 ohm load. Supplied accessories include mounting screw and user manual.