Bose FS3 FLUSH-MT BASS W Flush Mount Acoustimass Bass Module 5.25" Loudspeaker Designed to provide flush-mount bass augmentation for new and existing background music systems. Features one 5.25" (133 mm) woofer that delivers deep bass down to 40 Hz without audible distortion. FEATURES: Low-frequency loudspeaker featuring one 5.25" (133 mm) woofer that delivers deep, non-localized bass support down to 40 Hz without audible distortion. For flush, ceiling, pendant and wall-mount applications Acoustimass speaker technology filters out audible distortion to deliver non-localized bass Designed to work with the FreeSpace 3 flush and surface satellite speakers, or existing systems where additional bass reinforcement is desired Module design allows parallel connection of multiple bass modules and can accommodate two or four FreeSpace 3 satellites per bass module Plenum rated for use in air handling spaces (with optional plenum cover) Selectable 70/100V or low impedance with transformer tap adjustment under speaker grille Applications: Retail stores Restaurants and bars Lobbies and conference rooms SPECS: Technical Summary Frequency Response (+/-3 dB): 50 Hz - 230 kHz Frequency Range (-10 dB): 40 Hz - 315 Hz Nominal Dispersion: Omni-directional below 200 Hz Long-Term Power Handling: 70/100 V: 200 W (800 W peak) mono Low impedance: 50 W (200 W peak) per channel stereo or 100 W (400 W peak) mono Sensitivity (SPL / 1 W @ 1 m): Per channel: 76 dB SPL (Mono: 79 dB SPL) Maximum SPL @ 1 m: Per channel: 96 dB SPL (102 dB SPL peak) Mono: 102 dB SPL (108 dB SPL peak) Nominal Impedance: 6 ? mono direct (transformer bypassed) Echotone Music LLC is an experienced E-commerce Audio Visual Equipment dealer since 1998. We take pride in selling Pro Audio gear for musicians, sound engineers, production companies and broadcast applications. Shipping --Pro packed shipped USPS, UPS or Freight Service. Contact us pay for 2 day air upgrade on any unit. We are working hard to get your product ( built if needed), processed shipped. Processing times vary, 2-30 days Returns/Refunds- If there is truly a manufacturing defect a return tag will be provided. Otherwise customer pays for return shipping. Returned items must be sealed/unopened to qualify for a full refund. Refunds are for the Item cost only. Gear returned with out all its original packaging, accessories or shows signs of wear, is subject to an additional service fee. This item is now used and it would be unfair to resell to another customer as new. What products can not be returned? - Clearance items, Custom Builds, items identified as non-returnable, discontinued items, used or NOS items, electronic software downloads, demo gear, computers, vacuum tubes, earbuds, harmonicas raw-frame speakers, drumheads, drumsticks, turntable cartridges, fog fluids