Overview 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. Highlights
Drop-in replacement for Bose 901 drivers
Each individual driver is hand checked and tested
Fits Series III, IV, V and VI models, and more
Optimized cone/coil/suspension for linearity and reliability
1 ohm nominal impedance
Premium-quality motor structure maximizes performance
Replacement Speaker Driver for Bose 901 4-1/2" 1 OhmThis 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. Specifications: *Power handling: 30 watts RMS/60 watts max *VCdia: 1" *Le: 0.11 mH *Impedance: 1 ohms *Re: 0.76 ohms *Frequency response: 83-15,000 Hz *Fs: 83 Hz *SPL: 91.5 dB 1W/1m *Vas: 0.24 cu. ft. *Qms: 2.41 *Qes: 0.43 *Qts: 0.36 *Xmax: 0 mm (full range driver) *Dimensions: A: 5.20" (circle drawn around the three points), B: 4.02", C: 2.17".
NOTE: This product is not manufactured or distributed by Bose Corporation ™ the owner of the registered trademark BOSE™ and BOSE 901™ br/>
NOTE: International/PO BOX deliveries are not available.
This product does not ship to the APO address and the following state(s): HI, AK, PR.
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