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    Monolith by Monoprice 15" THX Ultra Certified 1000 Watt Powered Subwoofer
    Product # 24458
    $1,299.99
    In Stock This item will ship on 8/20/2018 if ordered within 2 days 22 hours 7 minutes

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    Model 24458
    Woofer 15" 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, 2 aluminum shorting rings, undercut T-pole focused field
    Magnet Ceramic Y35, 2 pcs total 216 oz.
    Xmax 25mm (one-way)
    Xmech 90mm (peak-to-peak)
    Enclosure Sealed or vented HDF cabinet with horizontal and vertical bracing
    Finish Black Ash
    Amplifier 1000Wrms / 1800W Peak Power
    Frequency Response (-6dB) Sealed Vented (2 ports) Vented (3 ports)
         Extended EQ 15-200Hz 14-200Hz 16-200Hz
         THX EQ 23-200Hz 19-200Hz 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) 26.8" x 17.7" x 27.6" (680 x 450 x 700mm)
    Net Weight 128.5 lbs. (58.3 kg)
    Gross Weight 162.7 lbs. (73.8 kg)
     

     

     

    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 14 questions Browse 14 questions and 19 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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    Monolith by Monoprice 10" THX Select Certified 500 Watt Powered Subwoofer
    BEST ANSWER: We will be adding CEA-2010 @2M burst and RMS measurements by frequency in the near future.
    Does this 15 inch subwoofer only play up to 90db before it distorts? Harmonic Distortion<1% 20-100Hz (90dB @ 1m) Does not seem to be very loud. Would think we need it to play at 105db with less than 1% distortion for a ultra THX theater.
    carl t on Sep 24, 2017
    BEST ANSWER: 90db@1M refers to sensitivity. It means that supplying 1 watt to the speaker will produce 90db SPL at one meter’s distance, usually reproducing pink noise. From this sensitivity statement, you can determine the speaker’s SPL at various distances when supplied with various wattages.
    What kind of power supply is it? Linear or SMPS? 110-240v compatible?
    Jeff B on Nov 9, 2017
    BEST ANSWER: SMPS.
    Is the finish a real wood veneer or a vinyl finish? Thank you.
    Ralph E L on Nov 19, 2017
    BEST ANSWER: Vinyl finish and it's nice but not a real wood veneer, hence the low price.
    Is this just a private label “last year’s model” SVS sub?
    A shopper on Nov 30, 2017
    BEST ANSWER: This subwoofer is not affiliated with SVS in any way. SVS subwoofers are not THX certified, and they have never produced a 15" subwoofer. The Monolith subwoofers have been designed and engineered from the ground up for us.
    Are the in-house CEA-2010 numbers listed in THX mode or Extended mode?
    A shopper on Mar 4, 2018
    Monolith by Monoprice 15
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    Monolith by Monoprice 12
    Monolith by Monoprice 12" THX Ultra Certified 500 Watt Powered Subwoofer
    How is this shipped? Regular ground?
    A shopper on Jan 1, 2018
    BEST ANSWER: This product is shipped by trucking.
    For a 120v circuit, what is the current draw in Amps while the unit is under load (approximately)? Trying to determine if I need to run another circuit considering the rest of my AV gear.
    Mike E on Jun 9, 2018
    How long does it usually take to ship via trucking, and you you provide a tracking number?
    Derek C on Jan 23, 2018
    BEST ANSWER: We do provide a tracking number once the subwoofer ships. Depending on where you are located, it would most likely take 3-7 days for transit.
    Can this sub be laid on its side?
    Ralph C on May 29, 2018
    BEST ANSWER: I have this sub. It is forward firing so I don't see why not. It would, however, make accessing the controls somewhat awkward. Hope this helps.
    Is this subwoofer active or passive? do I need woofer amplifier or it has its own?
    A shopper on Jan 8, 2018
    BEST ANSWER: It's active with a 1000 watt amplifier.
    Is this subwoofer active or passive? do I need woofer amplifier or it has its own?
    New User U on Jan 8, 2018
    BEST ANSWER: The sub has an internal 1000 watt RMS plate amp.
    On theMonolith 15" THX Ultra Certified 1000 Watt Powered Subwoofer, Is the 27.6 inch front to back depth measurement, a measurement of just the cabinet, or is it the overall depth from front of the grill to the tips of the control knobs on back of the sub?
    Basil R on Apr 22, 2018
    BEST ANSWER: 27.6" is just the cabinet depth. I didn't measure the grill. The subwoofer rubbery cone-end protrudes another ~3/4" from the front of the wood cabinet. The knobs protrude about ~3/4 from the back. However, with the back, you need more than that for the input connector and the power cord. I don't have an XLR input to measure, but using a Monoprice RCA cable, you'd have to add a full 2 1/2" inch of space (perhaps less if you found a right-angle input) to allow for the cable and bend. I suppose you could also void some warranty and hard-wire things to gain all but ~3/4 for the knobs.
    are the feet threaded in if so whats the thread pitch?
    New User U on Apr 6, 2018
    BEST ANSWER: Yes, the feet are threaded. As measured with a screw gauge, they are M6 with a pitch of 1.0 mm. The threaded portion of the foot is probably about 1/2" long. The foot is a rubbery material.
    5.0 / 5.0
    9 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    9
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    Love it!
    I was replacing an old SVS subwoofer that died after 12 years of hard use. Can't complain. This 15" THX sub makes my old SVS seem like a soundbar. The effortless, distortion free bass almost seems quiet because there are no harmonics. I have a very large room and open floor plan and the sub has no problem at reference level. Zero port noise with 20hz bass at native tune, which is a real problem for other internet direct subs. The THX spec really stands for quality today and performance, where other subs can be a gamble.
    January 2, 2018
    Reference quality subwwofer.
    I originally had a PSA V3600 subwoofer. Bought dual 15" Monoliths because the PSA subs would make farting noises with any deep bass. The Monoliths are near perfect and don't make any noises or harmonics even when pushed hard. They excel at deep bass where the Power Sound Audio subs failed miserably. Tight, controlled, and articulate with music but scary with movies. With a 5 year warranty I feel good about this purchase. Well done guys, well done.Write your review here. It must be at least 50 characters long. Consider whether you would recommend this product and what you like or dislike about it.
    December 23, 2017
    Monoprice is stepping up their game.
    After spending lots of time over at AVS forum reading their incredibly biased opinions (only cheap PSA, overpriced JTR, and Rythmik get the love), I broke the mold and tried the Monolith. Holy crap, this thing can pound with the best of them. NO obnoxious port noise with EOT, super clean sound, and zero problems with ordering process. I do recommend the lift gate service or you are screwed if you don't have lots of help.
    February 23, 2018
    All could say about this subwoofer is "WOW' after playing with the configuration in my Onkyo receiver that supports THX. This subwoofer complement my klipsch reference premiere speakers. Bass is more tighter, and it makes my Klipsch sw112 subwoofer sound like a sound bar. I would definitely recommend this to anyone. But this subwoofer is large, so space could be an issue for some.
    March 18, 2018
    Purchased
    5 months ago
    Outstanding refernce caliber subwoofer!
    I originally had a PSA V3600 subwoofer. Bought dual 15" Monoliths because the PSA subs would make farting noises with any deep bass. The Monoliths are near perfect and don't make any noises or harmonics even when pushed hard. They excel at deep bass where the Power Sound Audio subs failed miserably. Tight, controlled, and articulate with music but scary with movies. With a 5 year warranty I feel good about this purchase. Well done guys, well done.
    December 22, 2017
    A Beast of a Beauty
    Impressive on arrival its unpacking reveals a care for the customer that is sadly missing with most AV equipment today. The best comparison to what that looks/feels like is opening an OPPO BD/Audio player (RIP) or most Apple packaging. So right off the bat there's that. But we don't buy the candy for the wrapper. Luckily, in this case, it's ALL good. Just be ready for a VERY large double boxing (15" Sub here). Next of course is: How's it sound? In one word: Awesome! And in the best of ways for a subwoofer. It makes itself "felt" as well as heard, but in that way that doesn't have to remind you that you've got a Beasty Bass sitting right "over there" ... in other words, once calibrated to play nice with other subs you may also have, but for your overall system regardless (I applied an Audyssey MultEQ + App to do that job, but your calibration of choice should work great), it is audio bass heaven.Love listening to my Monolith Sub with movies or music. An amazing value (imho).
    July 5, 2018
    Purchased
    1 month ago
    A Great Bang for the Buck, Literally!
    So far, I have to say this is an awesome subwoofer for the money. Like all subs though, placement is very important.

    For me, that placement was behind my reclining chairs, limiting one of my recliner's ability to lean back. This unit is BIG. 125#. No matter, I have 3 more recliners.
    May 6, 2018
    Purchased
    4 months ago
    A great subwoofer
    Excellent packaging. Even though the outer container was damaged, the inner container was intact. I decided to increase the output by 3dB over the Marantz Audyssey calibration. The sound is more accurate than my old subwoofers. The article in Sound & Vision sold me on the speaker. Very good price for such a robust unit.
    July 18, 2018
    Purchased
    1 month ago
    Perfect woofer for the price. Low distortion with 2 plugs removed with plenty of low bass.
    August 10, 2018
    Purchased
    2 weeks ago

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