Our Luke Series Seismic Audio empty guitar cabinets are made of 1/2 Birch plywood on all 6 sides. These cabinets come loaded with everything you need except the speaker.‚ We are very proud of the Luke series cabinets. These each have a wheat grill of various colors and are covered with a clean-cut Tolex. The Luke series cabinets can be front-loaded as the front cloth grill is removable and easily reapplied. Some of the Luke series empty guitar cabinets cab be rear-loaded as well (see above). Each cabinet comes with a dual 1/4 metal jack plate and plenty of wire to hook up your speaker. Each cabinet is well-braced and offers a nice boutique look. The 1x12C Series is a contemporary look making it a must have for today s guitar player!