The JBL LSR 2310SP is a powered, magnetically shielded 230H 10" woofer and 180W RMS amplifier. The subwoofer speaker features integrated bass management crossover with selectable crossover settings and polarity control. The JBL speaker has left- and right-balanced XLR, 1/4", and unbalanced RCA inputs with detented level control as well as left- and right-balanced XLR and 1/4" high-passed outputs.