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        21NPW 21" Subwoofer 4 ohms

        REDCATT 21NPW 21" Subwoofer 4 ohms

        €599,95

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        REDCATT 21NPW 21" Subwoofer 4 ohms

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        Brand: REDCATT
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        21" | 4 Ω
        21NPW 21" Subwoofer 4 ohms
        21NPW 21" Subwoofer 4 ohms
        21NPW 21" Subwoofer 4 ohms
        21NPW 21" Subwoofer 4 ohms
        21NPW 21" Subwoofer 4 ohms
        21NPW 21" Subwoofer 4 ohms
        € 495,83€ 599,95 Out of stock
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        21NPW 21" Subwoofer 4 ohms
        21NPW 21" Subwoofer 4 ohms
        21NPW 21" Subwoofer 4 ohms
        21NPW 21" Subwoofer 4 ohms
        21NPW 21" Subwoofer 4 ohms
        21NPW 21" Subwoofer 4 ohms

        Product description REDCATT 21NPW Subwoofer

        The REDCATT 21NPW is a high-power 21" professional subwoofer driver with a neodymium motor, 4 Ohm impedance and high sensitivity for demanding low-frequency applications.

         

        Highlights of the REDCATT 21NPW

        • 21" professional subwoofer driver with 4 Ohm rated impedance
        • 1800 W AES power handling, 3600 W program power and 7200 W peak power
        • 96.32 dB sensitivity with 35 Hz resonant frequency
        • 5.3" copper voice coil on a glass fiber former
        • Triple silicone spider and carbon fiber loaded paper cone for high excursion performance

         

        Product details REDCATT 21NPW

        REDCATT 21NPW 21" Subwoofer 4 Ohm

         

        The REDCATT 21NPW is a high-efficiency professional woofer designed for serious low-frequency output. With a neodymium magnet system, aluminum basket and 96.32 dB sensitivity, it delivers strong acoustic performance while keeping the driver weight to 14.85 kg.

         

        At the core of the 21NPW is a large 5.3" copper voice coil with a glass fiber former, built to handle demanding thermal loads. The driver is rated at 1800 W AES, 3600 W program power and 7200 W peak power, making it suitable for high-output professional audio systems where reliability and headroom are essential.

         

        The cone assembly combines a carbon fiber loaded paper cone with a fabric surround and triple silicone spider. This construction supports linear low-frequency movement, long-term Fs consistency and a peak-to-peak maximum excursion of 31 mm. The 21NPW is well suited for large-format vented or horn-loaded subwoofer systems, infra-bass applications, outdoor use and weight-critical installations.

         

        For enclosure design, REDCATT recommends bass reflex alignments of 125 liters tuned to 38 Hz for high output, 150 liters tuned to 34 Hz for a balanced general-purpose setup, or 175 liters tuned to 29 Hz for extended low-frequency response with suitable high-pass protection. Installation dimensions include a 496 mm baffle cutout, 520 mm bolt circle, 8 mounting holes and 245 mm mounting depth, making it a powerful choice among professional audio components.

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        Specifications

        Article number
        21NPW
        EAN
        9505526565381
        Woofer Type
        Subwoofer
        Nominal Diameter
        21" | 530 mm
        Power Handling (RMS)
        1800 Watt
        Power Handling (max)
        7200 Watt
        Continuous Program Power
        7200 Watt
        Impedance (Z)
        4 Ω
        Sensitivity (SPL at 1m / 2.83V)
        96.32 dB
        Voice Coil Diameter
        134.6 mm
        DC Resistance (Re)
        3.0 Ω
        Voice Coil Inductance (Le)
        1.14 mH
        Resonant Frequency (Fs)
        35 Hz
        Mechanical Q (Qms)
        11.12
        Electromagnetic Q (Qes)
        0.33
        Total Q (Qts)
        0.32
        Diaphragm Mass Inc. Airload (Mms)
        51.4 g
        Mechanical Compliance of Suspension (Cms)
        0.4 mm/N
        Surface Area of Cone (Sd)
        1662 cm²
        BL Product (BL)
        32.9 Tm
        Compliance Equivalent Volume (Vas)
        14.9 L
        Maximum Linear Excursion (Xmax)
        9 mm
        Driver's Mechanical Losses (Rms)
        10.16 kg/s
        Cone / Diaphragm Material
        Paper
        Surround Material
        Fabric
        Voice Coil Wire Material
        Copper
        Voice Coil Former
        Glass Fiber
        Basket / Frame Material
        Aluminum
        Magnet Material
        Neodymium
        Overall Outside Diameter
        546 mm
        Overall Depth
        245 mm
        Baffle Cutout Diameter
        496 mm
        Bolt Circle Diameter
        520 mm
        # Mounting Holes
        8

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        21NPW 21" Subwoofer 4 ohms
        € 495,83
        € 599,95
        21NPW 21" Subwoofer 4 ohms
        Out of stock
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