Subwoofers impress with their very compact design. The QXE6D2 subwoofer is almost daintily, but with its aluminum die-cast basket, the dual magnet driver with 2 x 40 oz and the sewn bead, he signals: Caution, it can become very loud! The slightly larger subs have a powerful 2 x 63 oz double magnet and just like the QXE6D2 a pole core drilling and also a ventilated T-Plate for optimal cooling. Extremely long-wound voice coils of 30 or 36 mm winding height allow a linear stroke of +/- 10 mm. Both woofers have a dual voice coil with 2+2? Each. This can be used to configure impedances of 1 x 4? Or even 1 x 1? . Without problems, several subwoofers can also be operated in series on an amplifier. 64 mm Dual Voice Coil with 36 mm winding height. Dual Magnet with 126 oz. X-Max +/- 18 mm. 25 cm (10) Compact Subwoofer. Installation depth 155 mm. Installation diameter 234 mm.