Purchase Selected SubZone Enclosures and get "Ultimate Bass" Volume Two CD FREE Our NEW CD is jam packed with the latest Bass Cuts from MadTracker. It is FREE when you purchase selected SubZone Enclosures. Offer is good while supplies last.       The SubZone Z-Series Vented  Enclosures have been designed for High SPL and Deep Low End Powerful Bass Response.  Every model is equipped with a rectangular vent for nearly inaudible port turbulence. Each chamber is tuned using a rectangular vent which on the Dual Enclosure models are acoustically coupled to each other through a center ported configuration.  SPL levels are high and the resulting Bass is Low and Powerful. Eclipse Vented Enclosures All SUBZONE Vented enclosures are built with 3/4" MDF (medium density fiberwood).  Each vented enclosure is tuned to a particular frequency using the rectangular port, which is acoustically coupled to each other through the center vent configuration.  JL Audi *Match your suggested manufacturer volume to appropriate enclosures       Eclipse - VENTED     10" EZV110-1040 <Single 10" VENTED Rectangular vent - 1.0 cf,  9 1/8" woofer cutout - 14" h X 16 1/2" d X 16 1/2" w Box Tuning- 40Hz [an error occurred while processing this directive]         10" EZV210-1040  < Dual 10" VENTED Rectangular vent - 1.0 cf per chamber,  9 1/8" woofer cutouts - 14" h X 16 1/2" d X 30 3/4" w Box Tuning- 40Hz [an error occurred while processing this directive]       12" EZV112-1538  <Single 12" VENTED Rectangular vent - 1.5 cf,  11 1/8" woofer cutout - 15 3/4" h X 18 1/4" d X 18" w Box Tuning- 38Hz [an error occurred while processing this directive]         12" EZV212-1538 < Dual 12" VENTED Rectangular vent - 1.5 cf per chamber,  11 1/8" woofer cutouts - 16" h X 18 1/4" d X 34" w Box Tuning- 38Hz [an error occurred while processing this directive]         15" EZV151 < Single 15" VENTED Rectangular vent - 3cf,  13 7/8" woofer cutout - 18" h X 19 1/2" d X 29" w Box Tuning- 37Hz [an error occurred while processing this directive]