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The first studio monitors to incorporate JBL?ÇÖs patent-pending Image Control Waveguide, the recently introduced 3 Series models provide an unprecedented level of accuracy, with exceptional imaging and detail. Rounding out the 3 Series line, the LSR310S subwoofer extends the low-frequency response of the system into the 20 Hz range while including an innovative feature that will make the sub attractive to dance music producers.Driven by an integrated 200 Watt Class D power amplifier, a new 10-inch high excursion woofer works in concert with JBL?ÇÖs patented Slip Stream Port?äó, delivering impressive low-frequency response below 27 Hz, with peak output of 113 dB SPL. Exceptional performance in a compact form-factor make the LSR310S the ideal choice for use in music recording and playback reference systems, and also as the ?Ç£.1?Ç¥ LFE Low Frequency Effects speaker in surround-sound post production applications. The sub includes a selectable XLF Extended Low Frequency setting that emulates the augmented low frequency response heard in the dance club environment. This provides a useful reference of how a dance mix will sound in the outside world.Designed to integrate into a broad range of applications the LSR310S features balanced XLR and .?Ç¥ inputs, a selectable input sensitivity switch and three crossover settings: 80Hz, XLF and External. The 80 Hz setting implements high and low pass filters to create a seamless blend of the LSR310S with JBL?ÇÖs LSR305 or LSR308 studio monitors or models from other manufacturers. The external setting bypasses all filtering, allowing use of an external crossover. The special XLF setting activates a 120Hz High Pass Filter in conjunction with a low frequency tuning that approximates the tuning used in club playback systems. Using this setting, the bass output more than doubles and the newly developed woofer/amp combination with protective limiting allow the 310S to produce extended bass output continuously without failure.The LSR310S striking appearance is highlighted by a distinctive glossy black flange of the front-mounted Slip Stream?äó Port and the handsome compact black enclosure is designed to fit neatly into small recording and post production studio environments.