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    Monolith by Monoprice 12" THX Ultra Certified 500 Watt Powered Subwoofer
    Product # 24457
    In Stock This item should ship today (9/25/2018) if ordered within 9 hours 43 minutes

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    Model 24457
    Woofer 12" 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 144 oz.
    Xmax 18mm (one-way)
    Xmech 80mm (peak-to-peak)
    Enclosure Sealed or vented HDF cabinet with horizontal and vertical bracing
    Finish Black Ash
    Amplifier Class D 500Wrms / 900W Peak Power
    Frequency Response (-6dB) Sealed Vented (1 port) Vented (2 ports)
         Extended EQ 26-200Hz 19-200Hz 18-200Hz
         THX EQ 29-200Hz 23-200Hz 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) 22.8" x 16.7" x 23.6" (580 x 425 x 600mm)
    Net Weight 98.5 lbs. (44.7 kg)
    Gross Weight 125.7 lbs. (57 kg)



    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 9 questions Browse 9 questions and 7 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
    Monolith by Monoprice 12
    Monolith by Monoprice 12" THX Ultra Certified 500 Watt Powered Subwoofer
    Monolith by Monoprice 10
    Monolith by Monoprice 10" THX Select Certified 500 Watt Powered Subwoofer
    Monolith by Monoprice 15
    Monolith by Monoprice 15" THX Ultra Certified 1000 Watt Powered Subwoofer
    BEST ANSWER: We will be adding CEA-2010 @2M burst and RMS measurements by frequency in the near future.
    Can you please provide specifications in terms of power requirements for a North American household? I'd like to run 2 of these in my home theater currently under construction and want to know if I can run them both on the same dedicated 15 A circuit... or if I need to run them both on a dedicated 20 A circuit. Thanks!
    A shopper on Oct 27, 2017
    BEST ANSWER: I has a 20 amp circuit put in for this sub and a 12" SVS sub.
    Are the in-house CEA-2010 numbers listed in THX mode or Extended mode?
    A shopper on Mar 4, 2018
    Monolith by Monoprice 12
    Monolith by Monoprice 12" THX Ultra Certified 500 Watt Powered Subwoofer
    Monolith by Monoprice 10
    Monolith by Monoprice 10" THX Select Certified 500 Watt Powered Subwoofer
    Monolith by Monoprice 15
    Monolith by Monoprice 15" THX Ultra Certified 1000 Watt Powered Subwoofer
    Hello. I just looked at the manual and it appears the 10” goes lower than the 12 according to the manual. Is this correct?
    New User U on Nov 8, 2017
    BEST ANSWER: The 12" subwoofer goes lower and plays louder, as a 12" should. The Monolith 12" subwoofer has a 4 to 6 dB advantage over the 10" at 16Hz and 20Hz.
    Can you tell me the size of the threaded inserts on the bottom of the sub?
    A shopper on Mar 23, 2018
    Will these ever be available to buy again? Been waiting since late June and eta keeps getting pushed back?
    A shopper on Aug 6, 2018
    BEST ANSWER: Yes, these should be arriving in mid to late September.
    I'm just wondering if there are threaded inserts on the bottom of the sub for spikes etc? I'd be interested in adding the svs sounpath isolation feet.
    A shopper on Mar 11, 2018
    BEST ANSWER: Yes, there are threaded steel inserts.
    Can these sub woofers be positioned on their side for a lower profile? I have a large projection screen and plan on placing two subs up front.
    Shawn P on Oct 29, 2017
    BEST ANSWER: Yes, you can lay the subwoofer on its side with no loss in performance.
    Are the feet removable? if so, are they the screw on type or adhesive?
    kevin o on May 19, 2018
    BEST ANSWER: The feet are removable, and they are screw on.
    4.9 / 5.0
    10 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    Best at this price point.
    This thing rocks. My main theater room has a powersound 15v and I bought this for my family room so the kids have a great system as well. I am going to be switching subs, because this sub is much better. Much less distortion and plays lower and louder. I also own an SVS SB12 Plus in my office, and the monoprice sub seems to play tighter even though the SVS is sealed.
    January 8, 2018
    Awesome. Very capable subwoofer.
    This thing rocks. I purchased this subwoofer to complete my 7.2.2 home theater system. As expected per the spec sheets and the views online it's highly configurable. However I didn't notice how heavy and big it is until I received a call from UPS Freight asking me if they can get a semi truck and trailer down my somewhat narrow street. This subwoofer has a huge footprint compared to all the other ones I tested. You're not carrying this one up or down the stairs by yourself. But the sound, sounds (and feels), like movie theater quality.

    So far this subwoofer knows what to do with and handles everything cleanly, without any error, that I can detect. I can pop in a Star Wars (THX) Blu-Ray disc and set all the subwoofer switches and dials to Auto THX settings and then sit back and enjoy like I am at home in the movie theater. Or if I'm streaming a movie and don't know which audiocodes they have used in the recording I can manually set the subwoofer and come pretty close to the auto THX sound. This thing sounds awesome and so far has handled all the volume and bass I've given it.

    I do happen to have a THX receiver but I don't know if it's necessary to match it with the subwoofer as most of the time I have the settings on the subwoofer set manually and I have LFE turned or set to zero at the receiver end. Where I use THX the most is in selecting cinema sound. I've liked the pre-selected THX surround and bass settings for a long time. I guess I'm just used to it. But they can probably be matched playing around with the equalizer settings on your receiver if you don't have THX and you want to get the most out of this subwoofer. Onkyo has reasonably priced THX receivers for the most part. Everybody else seems to have stopped paying to get THX certified. Integra is Onkyo's Pro installation product line. I haven't hooked a guitar up to it but I have listened to rock and roll through it and this thing rocks too. I was impressed with this subwoofer from day one and it seems to be continually getting better and better with each movie I watch. And I'm watch back to watching movies for the special sound effects as much as possible or as much as I can find a decent movie where they paid attention to sound effects.

    I have zero regrets from this purchase. Course I'm not ready for my original subwoofer to fail anytime soon but when it does I'll get another 12 in. This is exactly what I was after testing all those subwoofers this summer.

    Thank you Monoprice for providing what comparably has to be a very high-end subwoofer for a realistically not high end price.

    Sorry I don't know Professional stats so I'm not able to provide in depth technical feedback. To go on would be to say over and over again how much I love this subwoofer.

    PS this thing arrived in a couple of days or so. I waited months for this to become available and then had to get creative to be able to spend the extra money for the 12 over the 10in but now it's oh Happy Days, happy, happy, happy...
    January 3, 2018
    9 months ago
    Hits better than my SVS SB 2000
    Great sub! Tested it out yesterday ,finally ,and i am impressed. I do not have complex measurement instruments but definitely plays louder and lower than my SVS. (As it should). Pleased thus far.
    December 11, 2017
    10 months ago
    very impressive
    I was very pleased with the build quality of the sub and the sound was one the was deep not as fast as some higher priced subs but can truly hold its own ,,,,,with subs costing much more .For movies you cannot go wrong... but recommend 2 subs in such a set up. I used it for music listening there it proved it self to be a power house it made most music very enjoyable,, if your looking for a sub that is priced much lower than those higher priced subs and one that can move some air in a room this one is for you ...my only concern was how big it was I had trouble fitting it in my room
    December 31, 2017
    9 months ago
    Double the impact
    Bought 2 of these about 3 weeks ago and I'm very happy with the tight roundhouse slam they provide. Excellent for music and home theater......when playing Interstellar (windows open), my neighbor who just happened to be walking his dog, came over to inquire what the hell was going on (sonic boom).......maybe overkill but what the heck.
    February 24, 2018
    7 months ago
    Insane power!
    Granted I'm coming from a really terrible sub (Polk PSW10) to this beast! but, still it's pretty impressive nonetheless. The sheer power and clean bass coming from this box is wow producing. It adds such depth to the audio in movies/shows. I HIGHLY recommend this sub to anyone who cares about home theater or music audio.
    April 30, 2018
    5 months ago
    I haven't had anything other than what came with a sound bar that I got, but I'm upgrading now to a 7.2.4 system and I did do a lot of research and went to audio stores to test out a bunch of subs before I got one, and this one has been everything that I hoped for. It does great on the opening credits of Edge of Tomorrow and it did a fantastic job of making me feel like there was an avalanche in the house during the avalanche scene in Murder on the Orient Express. And the best part is that it was only $800 (compared to other choices that would have been $1100-$2500)
    March 18, 2018
    7 months ago
    Tight, clean bass
    Have two of these paired with a Marantz 7012 and Revel Architectural speakers. Blown away with how tight and responsive these are. Looked at a lot of different options, very happy with my purchase. The cabinets are well made, solid and great looking. Highly recommended.
    July 25, 2018
    3 months ago
    Amazing, end-game performance
    When I started my search for a new subwoofer I decided that I wanted something that I would not want to replace for quite some time. I was patient, researching for months. I saw these subs announced, but knew it would be a while before reviews hit.

    Even without reviews, I knew these would be on my short list. THX certification still means something with subwoofers....

    Fast forward a few months and I was ready to pull the trigger on something. I couldn't decide between the 10 and 12, and having a trusted review would help me determine which size would be best.

    As it so happens, a very good review of the 10 and 12 was published the day after I was ready to pull the trigger. My decision was made, I went with a single 12" sub.

    I have absolutely no regrets about my decision. This sub performs beyond my expectations, hitting every note from every song and really bringing my movies to life. I have only ever heard bass like this in theaters, with some other home theaters coming close, but not quite matching it.

    The only potential downside for some will be the physical size. This thing is large and heavy. If you have a place to put it though, you will definitely not be disappointed.
    June 5, 2018
    4 months ago
    I have two Dayton 15's and an older Cerwin Vega 12. Because I never got any cabling I disconnected my Cerwin and cobbled enuf cable to hook up two Monoliths. Wow they really perform. I then found out one monolith was not running. I fixed that and double WOW. They dig down deep.
    January 30, 2018
    9 months ago