XR-W1204(4Ω)12" Oversized Subwoofer GENERAL FEATURES Peak Power: 2000 W RMS Power: 400 W Frequency Response: 32Hz-300Hz Impedance: 4 Ω Mounting Depth: 5-5/8inch eXcelon SPEAKERSSpeakers may be the most important piece of the sound quality puzzle. eXcelon speakers employ oversized drivers to enhance low-end range and large tweeters that improve mid- to high-range transitions, ideal for clear and dynamic vocals. Oversized woofers provide quick response and offer stable and powerful bass that remains true to the original recording.Test and Measurement Speaker and subwoofer development requires a diligent testing process including an anechoic chamber, power testing facility and the most advanced desktop applications for design and simulation. These high standards allow KENWOOD eXcelon speakers to deliver their expected performance and have long term reliability so your music can be enjoyed for many years. Cross Section Unit Oversized DiaphragmLow frequency output is increased because of a larger cone size. The cutout diameter has remained the same making this feature of the new XR woofers ideal for most vehicles where space is a premium. The XR woofers are ideal for a small sealed box.* RECOMMENDED SEALED BOX VOLUME: 0.88 cft Reinforcing Ribs (Cone)The newly designed cone features ribbing that adds strength to the cone and minimizes distortion. Strong Magnetic CircuitOur engineers designed a strong magnetic circuit with the purpose of reproducing deep low frequencies. Their efforts employed a large magnet and optimized yoke. Stress-free SpiderBy adopting a "Stress-free Spider" and a "Thermal Efficient System" the mechanical and thermal durability has been improved dramatically delivering smooth and strong bass sound with long lasting reliability. SPECIFICATIONS: XR-W1204 Woofer Size Over sized 30cm Over sized 12in Diaphragm PP Cone Gray Surround Rubber Black Basket Steel Black Magnet Ferrite φ155xt16x2pcs DIMENSION Woofer (Unit) Width 12-13/16in Height 12-13/16in Cutout Diameter 11in Depth 6-1/2in Mounting Depth 5-5/8in WEIGHT Woofer (pc.) 15.2lb(6.9kg) Gross Weight >17.6lb(8.0kg) NOMINAL IMPEDANCE 4ohms POWER HANDLING Peak Power 2000W RMS Power (CEA SPEC) >400W SENSITIVITY 83dB / W at 1m FREQUENCY RESPONSE 32Hz-300Hz ACCESSORY Screw sets φ4*35 *8pcs Cushion *1pc Warranty Card *1pc SPECIAL FEATURE Dual ventilation system Over sized Cone Stress-Free Damper 8AWG Push Terminal Rubber Magnet Cover