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        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm

        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm

        €41,95

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        GRS RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm

        13 reviews
        5 from 5
        13 reviews
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        Brand: GRS
        Show all Full-range woofer
        4.5" | 1 Ω
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        € 34,67€ 41,95 10+ In stock
        • -10% Purchase 8 for only € 37,76 per piece
        • -15% Purchase 16 for only € 35,66 per piece
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        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm

        Product description

        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

         

        Product details

        GRS RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 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 blue color pulp paper, an ideal material for cone applications and the foam surround of this driver make it almost identical to the original manufacturers appearance, design and performance. 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 driver has an impedance of 1 ohm, and should be used only to replace the 4-1/2" driver in the Bose 901 (Series III or later) and Bose 802™ loudspeakers. Compatibility with other Bose loudspeaker models or automotive audio systems has not been verified. This product is not manufactured or distributed by Bose Corporation™, the owner of the registered trademarks BOSE®, BOSE 802™ and BOSE 901®.

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        Specifications

        Article number
        RSB901-1
        Woofer Type
        Midwoofer
        Nominal Diameter
        4-1/2"
        Power Handling (RMS)
        30 Watts
        Power Handling (max)
        60 Watts
        Impedance (Z)
        1 Ohm
        Sensitivity (SPL at 1m / 2.83V)
        91.5 dB
        Frequency Response
        83 to 15,000 Hz
        Voice Coil Diameter
        1"
        DC Resistance (Re)
        0.76 ohms
        Voice Coil Inductance (Le)
        0.11 mH
        Resonant Frequency (Fs)
        83.4 Hz
        Mechanical Q (Qms)
        2.4
        Electromagnetic Q (Qes)
        0.43
        Total Q (Qts)
        0.36
        Diaphragm Mass Inc. Airload (Mms)
        3.38g
        Mechanical Compliance of Suspension (Cms)
        1.08 mm/N
        Surface Area of Cone (Sd)
        66.6 cm2
        BL Product (BL)
        1.767 Tm
        Compliance Equivalent Volume (Vas)
        0.24 ft.³
        Cone / Diaphragm Material
        Paper
        Surround Material
        Foam
        Voice Coil Wire Material
        Copper
        Voice Coil Former
        Kapton® / Polyimide
        Basket / Frame Material
        Polymer
        Magnet Material
        Ferrite
        Overall Outside Diameter
        5.2"
        Overall Depth
        2.17"
        Baffle Cutout Diameter
        4.02"
        # Mounting Holes
        3
        Sealed Volume
        0.06 ft.³
        Sealed F3
        182 Hz
        Vented Volume
        0.14 ft.³
        Vented F3
        104 Hz

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        Reviews

        13 reviews
        Review this product
        5 of 5
        Binnen 24 uur product in huis. Super!
        By Arjan on 7 February 2024
        5 of 5
        -
        By Nicky on 6 July 2023
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        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        € 34,67
        € 41,95
        RSB901-1 Replacement Speaker Driver for Bose 901 4-1/2" 1 Ohm
        10+ In stock
        Add to cart
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