On the outside

2 x Ci3 FX-UNI

the foam is extremely strong and durable

SounDigital Merchandise

and a solid aluminum basket

GAS Audio MAX S1-8D1 Impedance:D1 - Dual 1 Ohm On the outsideThe GAS Audio MAX S1 8D1 was developed for uncompromising bass performance and is aimed at discerning car audio enthusiasts who want to extract impressive deep bass even from compact enclosures. Thanks to its robust 2. 5 inch dual voice coil, massive dual ferrite driver, and torsionally rigid aluminum basket, the subwoofer delivers high output levels with precise control. The specially developed DVS2 ventilation system improves voice coil cooling,