JBL ASB6128 Subwoofer option-group-Truss Arch System 1 you can combine them to

you can combine them to get anywhere in between

System Requirements:

100 mm (4 in) Dual Coil Dual Gap neodymium Differential Drive® VGC™ driver

Powerful steel threaded rails

and feature black powder coated stainless steel hardware that is recessed for protection and 4 comfort grip spring loaded lift handles which allow for easy movement

JBL ASB6128 Subwoofer option-group-Truss Arch System 1 you can combine them toJBL ASB6128 Dual 18 inch Subwoofer High Power Subwoofer 2 x 18" 2242H SVG Driver ASB6128 is a high power subwoofer system comprised of two 460 mm (18 in) SVG Super Vented Gap low frequency drivers in a front loaded, vented configuration. Features: Large vent area for high output. Parallel Discrete Switchable. For fixed installation applications such as performing arts facilities, theatrical sound design, auditoriums, houses of worship, live clubs,