Simply Speakers 4.5" BOSE STYLE FULL RANGE, 802, 901, 1 OHM

This driver's parameters were carefully optimized to match the performance of the classic Bose 901 loudspeaker systems. Individually or in multiples, replacing your legendary but aging speakers has never been easier-or achieved better results. The top plate and T-yoke are Japanese-made cold forged low carbon steel. The flat back plate provides a uniform surface area to which the magnet is bonded, and the outside of the back plate is chamfered to maximize flux density in the gap. Critical attention has been paid to the pole piece and voice coil tolerances, thereby assuring high yield and immunity to mechanical issues. High-grade Y-35 strontium ferrite magnet material is utilized in the motor structure to ensure consistent motor force. The cone is made of long fiber New Zealand pulp paper, an ideal material for cone applications. It's rigid and just lossy enough to produce full, accurate sound. A 2-layer low oxygen copper voice coil is wound on a high temperature resistant polyimide former. Every driver is hand checked and tested, based on a +-2 dB window. NOTE: This product is not manufactured or distributed by Bose Corporation, owner of the registered trademark BOSE and BOSE 901

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