You're not monitoring without a sub are you? It's the 21st century for crying out loud! Gone are the days of wimpy, bass-less tracks! Modern music needs - nay, demands - bass, and without a subwoofer how are you to know if you have the right amount of low-end "oomph!". JBL LSR310S powered sub is your affordable active subwoofer solution - not to mention being the perfect companion to JBL 3 series studio monitors (but it will work great with virtually any system). The JBL LSR310S reaches all the way down to 27Hz, and faithfully delivers tight, clean, and low lows - making sure you always have a clear sonic picture of the bass (and the full frequency spectrum) in your tracks. A JBL first, the XLF setting activates a specially engineered tuning that emulates the ample bass tuning used in today's dance clubs. When producing a dance track, the XLF setting will inspire you and bring a bit of the club to your control room. Beef up your studio playback with the 200-watt, powered JBL Professional LSR310S subwoofer.