In the lower frequency range the rugged custom design woofer combines solid performance with outstanding reliability. The enclosures feature inset input-jack plates, which contain binding post and 1/4" phone connectors. The enclosures are painted with a white two-part epoxy and incorporate curved, anti-resonance speaker grille constructed of perforated 16-gauge steel. Both enclosure and grille can be easily refinished and feature a grille clip attachment system for easy removal and recovering. Painstaking attention to details of design is taken while the enclosures are constructed of highly rigid 15mm (.5906") Baltic birch plywood.