The Dayton Audio MK402BTX offers incredible sound quality and an outstanding feature set in an unbelievable size. The more refined crossover produces smoother, non-fatiguing high-end while retaining the impressive low-end of the original MK402BT. With built-in Bluetooth and an auxiliary input, playing virtually any media is possible. The MK402BTX creates a soundstage that is sure to awe even the harshest of critics. Visit our website simplyhomesounds to 'Make Offer'. HighlightsBluetooth 4.2 allows high-fidelity wireless audio playbackThe built-in amplifier makes connecting these speakers simple and hassle-free4" treated paper woofer optimized for low-frequency extension3/4" tweeter offers a very airy top end to create a beautiful ambianceAttractive textured, black vinyl finish that stands out The MK402BTX offers the same fantastic sound quality and articulation as the original but adds the wonderful amenity of a wireless connection. The built-in amplifier on the MK402BTX is able to provide up to 80 watts of max output power, easily enough to power these speakers. The MK402BTX also allows you to change tracks, volume, and even pause/play songs from the speaker itself.Beauty More Than Skin DeepThe MK402BTX features an attractive textured, black vinyl finish that stands out at first glance. The cabinet offers a unique geometric design for the baffle that sets it apart from much more basic speakers in its price range. The grill is removable and made of a high-quality black cloth that discretely obscures the most appealing features of this design, the drivers.Elegant 3/4" Silk Dome TweeterThe 3/4" tweeter is elegant with a very airy top-end that can be appreciated by anybody that enjoys the delicate side of music that is often left behind by most speakers. The dispersion from this tweeter provides a life-like ambiance that truly sets a scene for the music.Impressive Low Frequency Extension from a 4" WooferThe woofer is able to play down to the 60 Hz range with ease. A 4" woofer playing low frequencies would normally limit the upper-frequency range, that is not the case here. The woofer plays through a large portion of the vocal range, adding coherency and smoothness to music.CrossoverThe built-in crossover creates a non-fatiguing, enjoyable listening experience. It features a 3.3 kHz, 3rd order high-pass, 2nd order low-pass The 7-component crossover uses asymmetrical slopes to help blend the two drivers in a more musical way. The crossover now has a flatter treble response that delivers a smoother high-end. Terminals feature 5-way gold plated posts for simple and secured connectivity.Control at Your FingertipsThe MK402BTX can be controlled via the controller atop the active speaker. This controller allows you to set volume, start and stop playback, and change the source.SpecificationsDesign: 2-way vented bookshelfWoofer: 4" high excursion driver with a treated paper coneTweeter: 3/4" soft domeFinish: Black vinylPower handling: 40 watts RMS/80 watts maxImpedance: 4 ohmsFrequency response: 60 to 20,000 HzSensitivity: 84 dB 1W/1mCrossover: 3.3 kHz, 3rd order high-pass, 2nd order low-pass (asymmetrical slopes)Terminals: 5-way gold plated binding postsPort tuning: 50 HzDimensions: 9-1/2" H x 5-3/4" W x 6-5/8" D (depth includes removable grill)