- The tweeter has been replaced with a new Kevlar tweeter, similar to the woofer section, which replaces the silk dome used in the VXT series. - The amplifier is equipped with a powerful "Class D" digital amplifier with a total output of 85 watts. - The front uses an aluminum frame to control excess vibration, and by attaching the included mesh grill, you can carry it to the site with confidence. V series - The newly developed woofer features a lightweight unit and a small, powerful amplifier to reproduce extended bass with reduced distortion. Kevlar® is an incredible fiber, so good it's even used in bulletproof vests. KRK has discovered that this material is also ideal for disrupting standing waves, which cause distortion and coloration. Impregnated with a hardening resin to seal the fibers and coated with a polymer for enhanced damping, the Kevlar® cone maintains a continuous polar pattern at all frequencies, superior to any other cone material. The result is a sound with minimal delay or blurring, resulting in clean, precise bass. Music is all about subtlety. The brush of a brush across a cymbal, the scrape of a pick across a guitar string, and even the atmosphere of the room in which the performance takes place all add a sense of life to the music. To reproduce these subtle nuances, we've upgraded the tweeter design. All V Series 4 models are equipped with Kevlar R cone tweeters. The result is stunningly clear and beautiful high frequencies. Minimizing vibration requires the most rigid components possible. The V Series 4 features a solid aluminum baffle that is less susceptible to cabinet vibration. The result is razor-sharp reproduction of sonic detail, a deeper level of insight into the performance, and a precise, wide sweet spot for the engineer to mix. - 49 different combinations of low and high control functions allow you to compensate for acoustic characteristics and achieve more accurate monitoring.・All V Series 4 models come with a grille. Special tools are required for installation. SYSTEM SETTINGS A - GROUNDLIFT (1 LIFT / 2 GROUND) - Switch to connect or disconnect pin 1 to ground B - INPUT (1 -10dBV / 2 +4dBu) - Input sensitivity selector switch, -10dBu: consumer standard, +4dBu: professional standard C - STANDBY (1 ON / 2 OFF) - When set to ON, the unit will go into sleep mode if no audio signal is detected for 30 minutes. It will restart when a signal is sent. D - LOGO LED (1 ON / 2 OFF) - Turns the backlight of the KRK logo on the front on or off. E - LOGO LED DIM (1 BRIGHT / 2 DIM) - Allows you to adjust the brightness of the KRK logo when it is on. KRK V4 S4 Technical Specifications Configuration: 2-Way System type: Active Studio Monitor Low-Frequency: Woofer, 4 cast aluminum frame, Kevlar cone, ferrite magnet High-Frequency: Tweeter, 1, Kevlar dome, ferrite magnet Frequency Response: 58Hz - 19kHz Frequency Range: 50Hz - 24kHz Max Peak SPL: 110 dBSPL Power Output: LF (55 Watts), HF (30 Watts), Total (85 Watts) High Control: H1 (High Shelf -2dB 10kHz, H2 (High Shelf -1dB 10kHz / High Mid Peq -1dB 3.5kHz), H3 (High Mid Peq -1dB 3.5kHz), H4 (Flat), H5 (High Mid Peq +1dB 3.5kHz), H6 (High Shelf +1dB 10kHz / High Mid Peq +1dB 3.5kHz, H7 (High Shelf +2dB 10kHz) Low Control: L1 (Low Shelf -3dB 75Hz), L2 (Low Shelf -1.5dB 75Hz), L3 (Low Shelf -2dB 75Hz / Low Mid Peq -2dB 200Hz), L4 (Flat), L5 (Low Mid Peq -2dB 200Hz), L6 (Low Shelf +1.5dB 75Hz), L7 (Low Shelf +3dB 75Hz) Enclosure Construction: MDF / Aluminum Grille:Included Dimensions (H x W x D): 10.08 (256mm) x 6.54 (166mm) x 8.58 (218mm) Weight: 12.78 lbs. (5.8 kg)