All élite subwoofers are horn-loaded except for the LS1004 which is a bass reflex design. Suitable for touring or fixed installations, the cabinets are constructed of 15mm 11-ply Baltic Birch with heavy internal bracing for reduced resonance and better durability. All enclosures are covered in a black carpet covering and incorporate metal corner protectors, rugged curved anti-resonant metal grilles, and 1/4" or Speakon™ input connectors. An optional finish of black ultrathane paint (LS1004B) is also available. Additionally, the Speakon™ connectors feature a configuration switch which allows instant reversal of Speakon™ jack pinouts for easy single wire hook-up using optional four wire Speakon™ cables.