RBH Sound UNRIVALED 21-SF/R ULTIMATE SUBWOOFER SYSTEM (Each) - Dreamedia AV
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RBH Sound UNRIVALED 21-SF/R ULTIMATE SUBWOOFER SYSTEM (Each) - Dreamedia AV
RBH Sound UNRIVALED 21-SF/R ULTIMATE SUBWOOFER SYSTEM (Each) - Dreamedia AV
RBH Sound UNRIVALED 21-SF/R ULTIMATE SUBWOOFER SYSTEM (Each) - Dreamedia AV
RBH Sound UNRIVALED 21-SF/R ULTIMATE SUBWOOFER SYSTEM (Each) - Dreamedia AV
RBH Sound

RBH Sound UNRIVALED 21-SF/R ULTIMATE SUBWOOFER SYSTEM (Each)

RBH Sound

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Description

Unmatched Power and Precision

The RBH Sound UNRIVALED 21-SF/R Subwoofer takes bass to the next level—deep, powerful, and felt as much as it’s heard. With cutting-edge design and engineering, it delivers breathtaking low-end impact that transforms music, movies, and gaming into a fully immersive experience.

Estimated Lead Time

4 to 6 weeks

Only Gear We’d Put in Our Own Setups

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RBH Sound UNRIVALED 21-SF/R ULTIMATE SUBWOOFER SYSTEM (Each)
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    Description

    Unmatched Power and Precision

    Get ready to feel your audio. The RBH Sound UNRIVALED 21-SF/R isn’t just a subwoofer—it’s an experience. With a massive 21-inch carbon fiber driver, this powerhouse delivers bone-rattling bass, incredible dynamics, and jaw-dropping depth that brings movies, music, and games to life.

     

    Engineered for Impact

    Built with premium materials, advanced DSP control, and a 4,000-watt Class-D amplifier, the 21-SF/R combines raw power with precision tuning. From thunderous lows to tight, clean mid-bass, every detail is engineered for accuracy, clarity, and pure performance.

     

    Crafted to Last

    Featuring a reinforced cabinet, acoustic damping system, and customizable finishes, the 21-SF/R is as durable as it is stunning. Whether you want reference-level cinema bass or audiophile-grade depth, this subwoofer is the centerpiece your system deserves.

     

    Key Features

    • 21-inch carbon fiber driver with 38mm Xmax
    • 4,000-watt Class-D amplifier with DSP control
    • Frequency extension down to 10Hz
    • Reinforced, acoustically optimized cabinet
    • Custom finish options for any room
    General Specifications
    ModelUNRIVALED 21-SF/R
    TypeUltimate Subwoofer System
    ApplicationSuitable for both movies and music listening
    OutputTight and accurate
    ConstructionBuilt with the highest quality materials
    Manufacturer CollaborationPierce Audio
    Manufacturing LocationHand-built in the Pacific Northwest since 2004
    InnovationGroundbreaking low-distortion design
    PerformanceCapable of extracting every ounce of performance
    ResilienceEngineered for high quality and resilience
    UsageSuitable for most any application
    Driver Specifications
    Size21 inch
    MaterialCarbon fiber cone
    FeaturesMassive cast aluminum basket Half-roll rubber surround 38mm Xmax (one-way linear travel) 50mm Xmech (one-way mechanically limited travel) Eight neodymium slugs for the magnet Magnetic flux of 35 Tesla Meters 4
    HDF)
    Dimensions43

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    John Flores
    "Seen Zach on Youtube and loved his enthusiasm for home theater. For years my..." ... click to read more
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    "I ordered my end game movie playback device from Dreamedia during a promotion almost a..." ... click to read more
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    Michael Brewington
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    Whitney Grider Ellis
    Robert Neumann
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    Swaminathan Venkatramanan
    "I recently ordered a jvc rs540 from Zach and they have been nothing but great...." ... click to read more
    ★★★★★
    Swaminathan Venkatramanan
    RJ Anderson
    "No one better in the business!"
    ★★★★★
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    FAQ

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    How long are the lead times on orders?

    Lead times generally take 3-5 days to ship and arrive. However, there are several items that may have unique ordering and freight conditions that vary.

    Do you offer in-depth consultations?

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    Do you offer bundles?

    We have bundles that can be a one size fits most. However, we would prefer to schedule a consult to talk through your exact project. Determining what is best for your space, timeline and budget.

    Can you install my system?

    Depending on location, there is a good chance one of our preferred partners can do the installation. We have over 20+ installers in our network across the country.