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    Monolith 10" THX Select Subwoofer
    Product # 24456
    In Stock This item should ship tomorrow (11/20/2017) if ordered within 18 hours 26 minutes

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    Qty: 1 $499.99
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    Monolith 10" THX Select Subwoofer

    Monolith THX Select Subwoofer

    The Monolith THX® certified subwoofer sets the standard for bass output, low distortion, and affordability. With chest thumping bass that plays down to well under 20Hz, the Monolith subwoofer unleashes cinema level volume, with the ability to convey and articulate the subtle nuances of music.

    THX Select Certified
    500 Watt Amplifier

    THX Select Certified
    500 Watt Amplifier

    THX Select Certified: THX® engineers completed hundreds of different scientific tests to ensure the highest audio performance possible. The tests ensure the speaker can reach the high volumes necessary to achieve THX Reference Level without creating audible distortion or artifacts. THX Certified Select products are for medium sized rooms, up to 2,000 cubic feet in size, with a 10-12 foot viewing distance from the screen.

    10" Woofer: The Monolith 10" driver was developed from the ground up, with a design focus on of achieving output, accuracy, dynamics, and linearity, while minimizing distortion. Enclosed in a cabinet made from HDF material, massive internal bracing, and outfitted with a single port that can utilize a foam plug to run the subwoofer in a sealed mode.

    500 Watt Amplifier: The 500W RMS amplifier is built around a Texas Instrument 48-bit data path (with 28-bit filter coefficients) and DSP engine. Each amplifier's transfer function, power output limiting and thermal protection are monitored to the millisecond and are customized for each individual driver. The high efficiency Class D amplifier modules are based on a proven topology that has been continuously refined over the past 4 years. The amplifier has vast reserves of power for highly accurate, deep bass for your home theater or music system.

    Performance Class

    THX Select

    THX® Certified Select products are for medium sized rooms, up to 2,000 cubic feet in size, with a 10-12 foot viewing distance from the screen.*

    * Previously known as Select2

    CEA-2010 SPL Measurements @ 2 meters


      SPL @ 2m Distortion
    Hz Peak (dB) RMS (dB) THD% 2nd
    16 93.9 90.9 18.7% 16.8% 6.5%
    20 104.8 101.8 10.1% 9.3% 2.6%
    25 108.5 105.5 3.2% 0.4% 2.5%
    31 109.3 106.3 4.4% 2.9% 3.2%
    40 109.7 106.7 5.4% 4.9% 1.9%
    50 110.1 107.1 4.7% 4.4% 1.6%
    63 110.6 107.6 6.3% 5.2% 3.4%
    80 110.9 107.9 7.8% 6.8% 3.6%
    100 111.2 108.2 9.5% 9.0% 2.4%
    125 111.5 108.5 5.6% 4.8% 2.6%


      SPL @ 2m Distortion
    Hz Peak (dB) RMS (dB) THD% 2nd
    16 91.4 88.4 14.2% 4.2% 12.2%
    20 97.5 94.5 17.3% 2.7% 15.2%
    25 102.6 99.6 15.9% 9.8% 9.8%
    31 106.5 103.5 11.4% 8.6% 7.2%
    40 107.8 104.8 7.7% 6.0% 4.1%
    50 109.1 106.1 6.9% 5.8% 3.4%
    63 110.0 107.0 8.1% 6.5% 4.6%
    80 110.8 107.8 9.0% 8.5% 2.6%
    100 111.7 108.7 7.1% 6.4% 2.7%
    125 112.0 109.0 4.8% 4.5% 1.3%

    5 Year Warranty

    Buy with Confidence

    Monoprice not only stands behind every product we sell with a 5 year replacement warranty, we offer a 30-day money back guarantee as well! If the product you purchase does not satisfy your needs, send it back for a full refund.

    Quality at a Fair Price

    Quality at a Fair Price

    Monoprice's rugged design and rigid quality control standards deliver high quality products at fair prices.

    Hassle Free Packaging

    Hassle Free Packaging

    Monoprice exists to bring simplicity, fairness, and confidence to technology choices. This product features recyclable packaging that is simple to open, cost effective, with minimal waste, and fully protective as it travels to you.

    Service & Support

    Service & Support

    You're never on your own with Monoprice products! We have a full team of friendly and knowledgeable technicians available to answer your questions, both before and after the sale. Contact our technical support team for questions about our products, troubleshooting, or even suggestions for products to fit your particular needs. Not to be outdone, our friendly and helpful customer service team is here to make your ordering, delivery, and any possible returns a quick and painless operation, from start to finish!

    Support Files:

    THX® and the THX logo are trademarks of THX Ltd., registered in the U.S. and other countries.

    Model 24456
    Woofer 10" cone
    Cone Material 2 layer long fiber pulp/glass fiber cone
    Voice Coil 60mm with high temperature aluminum wire and black anodized aluminum bobbin
    Surround FEA optimized NBR (nitrile budadiene rubber)
    Motor FEA optimized, undercut T-pole focused field
    Magnet Ceramic Y35, 2 pcs total 144 oz.
    Xmax 18mm (one-way)
    Xmech 78mm (peak-to-peak)
    Enclosure Sealed or vented HDF cabinet with horizontal and vertical bracing
    Finish Black Ash
    Amplifier Class D 500Wrms
    Frequency Response (-6dB) Sealed Vented
         Extended EQ 28-200Hz 18-200Hz
         THX EQ 31-200Hz 20-200Hz
    Harmonic Distortion <1% 20-100Hz (90dB @ 1m)
    Variable Level Control +15/-20dB
    Crossover Inline/Bypass variable 40-160Hz
    Inputs RCA (2), XLR
    Outputs XLR
    Signal Turn On Selectable always on/auto
    Auto Turn Off 30 minutes
    Dimensions (H x W x D) 18.9" x 15" x 19.7" (480 x 380 x 500mm)
    Net Weight 72.5 lbs. (32.9 kg)
    Gross Weight 93.9 lbs. (42.6 kg)

    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 6 questions Browse 6 questions and 4 answers
    Can you add maximum SPL in the various modes (THX, etc.) to the spec sheets for all of these new subwoofers? Thanks!
    Jason G on Sep 2, 2017
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    BEST ANSWER: We will be adding CEA-2010 @2M burst and RMS measurements by frequency in the near future.
    For long term, is a pair of tens as good as the twelves at normal listening levels? Main application music. And what is the trade off in sealed mode vs using an actual high quality sealed subwoofer? And how accurate musically is vented mode vs sealed?
    A shopper on Sep 21, 2017
    Is the 10" driver cast or stamped steel?
    A shopper on Oct 31, 2017
    BEST ANSWER: All the Monolith subwoofer drivers are cast aluminum not stamped steel.
    How to daisy chain a pair, or 4?
    A shopper on Sep 15, 2017
    BEST ANSWER: You would need to daisy chain by utilizing the XLR pass through for 2 or 4 subwoofers.
    Would it be better to get to 10" for a room that is 25 x 15 ( about 3000 cubic ft) or one 12"?
    A shopper on Sep 10, 2017
    BEST ANSWER: I would recommend a single 12" subwoofer over the 10" for that size room. You could also look at utilizing 2 10" subwoofers as well.
    Under the "Full Specs" section the the frequency response is listed as 31-200Hz sealed with THX EQ, however in the manual it is stated as 20-200Hz for the same configuration. Which is correct?
    New User U on Nov 18, 2017
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    In Stock This item should ship tomorrow (11/20/2017) if ordered within 18 hours 26 minutes