One KEF Hi-End R Series SP1632 Uni-Q MF/HF Driver 1 vented aluminum dome tweeter with waveguide 5 magnesium/aluminum midrange driver - the tweeter and midrange use KEFs Uni-Q technology, which places the tweeter in the center of the midrange driver - this specialized positioning creates a large listening sweet spot in your room Frequency Response: upto 45000 Hz Impedance: 4 Ohm Recommend Crossover Frequency: 2800Hz, 500Hz Magnet Type: Neodymium Driver Diameter: 125 mm (Mid-range), 25 mm (Tweeter) Driver Material: Aluminum, Magnesium-aluminum alloy Faceplate diameter: 134 mm Cut off hole: 112 mm Height: 103 mm For R100, R300, R500, R700, R900, R200C, R600C, R800ds Net Weight: 2.3 Kgs per unit “The KEF SP1632 co-axial Uni-Q driver unit is a 5” 4? mid-range driver paired with a 4? 1” tweeter placed in the centre of the cone. The SP1632 is used by KEF in the “R Series” loudspeakers. It has a very sturdy and nice build quality, but this driver can’t be used for mid-woofer duties, since it’s a pure mid-range driver and consequently it has to be used in a three way loudspeaker design. The stiff magnesium/aluminium mid-range cone has special molded braces in the cone in order to control and suppress the mid-range’s cone break-up. The tweeter is mounted in the throat of the mid-range driver and has a “tangerine” wave-guide in front of the dome. The shape of the mid-range cone, Z-flex surround and driver design ring together with the “tangerine” technology makes a wave-guide for the tweeter, which in turn gives a super smooth tweeter frequency response with a very wide dispersion.” Here’s how KEF R Series describes the new “R Series” Uni-Q driver unit: “The new Uni-Q MF/HF driver array is a masterpiece. Midrange response is amazingly fast and clean, thanks to a braced magnesium/aluminium alloy cone, with KEF’s Z-flex surround smoothing the transition to the front panel and a sturdy die-cast aluminium chassis that prevents resonance being transferred to the cabinet. At the acoustic centre of the midrange cone is the sophisticated vented tweeter that endows KEF Blade with such startlingly pure HF response. With a large neodymium magnet and a computer-optimised dome structure so stiff that it operates pistonically over its entire working range, the upper registers are articulated with flawless precision – and to capitalise on Uni-Q’s point source characteristics, KEF’s ‘tangerine’ waveguide helps to disperse the higher frequencies evenly across a wider angle to flood the room with an intricate and refreshingly natural soundfield. Operating together as a single, perfectly integrated voice, the array as a whole delivers a sweet, accurate sound of unprecedented clarity.” KEF certainly has the market lead in this segment and by using cutting edge technology it has for a co-axial driver “world class” performance.” Remarks: Item(s) had only been used for testing before, which is in good conditions and work perfect, no marks. ¯¯¯¯¯¯OOO¯¯¯¯¯¯ International Buyers – Please Note: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. *** Shipping cost is included register airmail with tracking no. +++ Thank you for taking the time to view this auction and good luck on your bid! +++ Welcome to take time for viewing my store (Visit My eBay Store: chaudiolab Multi-Store) to find more attractive items. JJJHappy BiddingJJJ