Description 

Extend your system LF all the way down! The LSR310S subwoofer incorporates JBL’s patented Slip Stream™ Port working in concert with a custom 10 down-firing driver and a 200 Watt amplifier to add deep, powerful bass to any studio monitor system.
A JBL first, the XLF Extended Low Frequency setting lets you hear your tracks with the augmented bass tuning used in today’s dance clubs

Features 

• Custom 10 Down-Firing High Excursion Low Frequency Driver
• Selectable Input Sensitivity – -10dBV/+4 dBu
• Three Crossover Settings
• Volume Control