Side-ported for optimal bass response, this cabinet is loaded with one Eminence 15" speaker for balanced tone and serious punch. This 400W Orange Amplifiers OBC115 Bass Speaker cabinet is made from 13-ply high-density 18mm birch plywood. Tough skids on the speaker enclosure's base result in enhanced acoustic connection to the stage. The hi-tech OBC115 bass cab is side-ported and provides for speaker self-correction. The ports are tuned by Orange to emphasize the low end and get a better response. The Eminence 15" bass speaker delivers full, rounded bass tone. Internally strutted to avoid cabinet vibration, the Orange OBC115 bass enclosure won't rattle, even under the most demanding conditions. The sound is amazing, extending the bottom-end for deep bass response. With a hefty 400W power handling, the Orange OBC115 bass cabinet's deep sound packs some serious punch.