The E18-SUB is a compact, very low tuned bass-reflex design employing a single 18 inch driver. The E18-SUB cabinet is constructed from marine plywood and has an impact resistant paint finish. The front of the loudspeaker cabinet is fitted with a rigid metal grill covered with a replaceable acoustically transparent foam and fitted with catches at the top and bottom to secure an optional transport lid. The cabinet incorporates a pair of steel handles and on the rear panel four heavy duty wheels. An M20 threaded flange in the top panel accepts single pole loudspeaker stand for the deployment of full range cabinets.