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Monolith

Monolith Powered Subwoofer - 15 Inch with 1,000 Watt Amplifier, THX Certified, Ideal for Professional Studio and Home Theater

    • Based on 15 reviews
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Style: 15 Inch


Size: 1000W


Features

  • THX Ultra 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 Ultra products are for large sized rooms, up to 3,000 cubic feet in size, with a 10-12 foot viewing distance from the screen.
  • 15" Woofer: Enclosed in a cabinet made from HDF material, massive internal bracing, and outfitted with three ports that can utilize foam plugs to run the subwoofer in a sealed mode, or tune it as you see fit.
  • 1000 Watt Amplifier: Each amplifier's transfer function, power output limiting and thermal protection are monitored to the millisecond and are customized for each individual driver.

Description

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 16Hz, the Monolith THX Ultra 15" Subwoofer unleashes cinema level volume, with the ability to convey and articulate the subtle nuances of music. THX Ultra 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 Ultra products are for large sized rooms, up to 3,000 cubic feet in size, with a 10-12 foot viewing distance from the screen. 15" Woofer: The Monolith 15" driver was developed from the ground up, with a design focus on achieving output, accuracy, dynamics, and linearity, while minimizing distortion. Enclosed in a cabinet made from HDF material, massive internal bracing, and outfitted with three ports that can utilize foam plugs to run the subwoofer in a sealed mode, or tune it as you see fit. 1000 Watt Amplifier: The 1000W 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.


Brand: Monolith


Model Name: 124458


Speaker Type: Subwoofer


Recommended Uses For Product: Home Theater


Unit Count: 1.0 Count


Product Dimensions: 37 x 24 x 33.5 inches


Item Weight: 132.7 pounds


Item model number: 124458


Date First Available: September 18, 2017


Manufacturer: Monolith


Country of Origin: China


Speakers Maximum Output Power: 1000 Watts


Item Weight: 60.33 Kilograms


Number Of Items: 1


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Top Amazon Reviews

    • Not what I thought it would be...
Review Image by Transform_gamer Transform_gamer
Review Image by Transform_gamer Transform_gamer
The media could not be loaded. I would say first never buy a from manufacturer on Amazon in which Amazon does not cover the return or replacement. Only because you will probably in up involving Amazon anyway. My impression of Monoprice is that they are a bad company. I'm not saying don't buy Monoprice, I'm saying I won't buy Monoprice ever again. It's my fault only because buying through Amazon, with out having the ability to return the item allows Monoprice to do shady business. Ok with that out the way, the Monolith itself. My unit was either defective or was just not up to my standards. I believe it was defective only because the amplifier was way too quiet. My 12 inch subwoofer totally drowned out this sub. That should not happen in any scenario @1000 watts. My thoughts were that turning this Monolith up a little should have put a hole in my chest. Instead to get this to amplify acceptably I had to turn up all the settings and turn up my receiver subwoofer settings as well. That's not loud enough. I refuse to believe this thing is 1000 watts and amplify this quiet. It also throws off all the settings of my 12 inch polks which are much louder even when db is low. So I am confident that the amplifier is defective. As far as quality wise you can see that these have potential. This thing is huge... I bet the M-215s are a beast! I like the tank look of the subwoofer but you can tell they cut corners to make it cheaper. But it's big and heavy. But to me a heavy sub means quality parts, which may not be true enlight if this sub's performance. I'm just disappointed that Monoprice was trying to stick it to me with this subwoofer, which I think was previously owned. They honestly tried to tell me that the quietness of this sub is by design. I'll be showing those emails on my YouTube channel. Another sign of defective product was when I turned it up, it gave off a smell, a burning smell. I'm just really disappointed that I didn't get to hear the full effects of this sub's potential. I bet that this is a hell of a sub when it works. Guess I'll never know. Follow me on transformational gaming on YouTube. I will soon put a video review of this as well. But I must say, I will never buy from Monoprice ever again. ... show more
Reviewed in the United States on December 17, 2019 by Transform_gamer Transform_gamer
    • This will divide relationships, a must have !
Amazing sub! You can’t describe it, until you heard in your home. I wanted a svs but on the fence about their amp issues. This thing is solid. Ordering a second one next week!
Reviewed in the United States on June 7, 2019 by Amazon Customer
    • House shaker.
I use this sub for home theater and music. Mostly music bass go low and deep. Will be adding another one can never have to much bass :-)
Reviewed in the United States on January 23, 2020 by MITCHELL
    • great customer support
sub was awesome and the customer support was top notch! Thanks
Reviewed in the United States on August 28, 2020 by lanty gray
    • Two of these arrived DOA Direct from the Manufacturer
I had been trying to decide for two years which Sub to replace by SVS PC12 Ultra Duals which I had for 5+ years. My room had strict width restraints so I needed the biggest boom and quality within a 20" Width or so. I had been following the Monoloith Subs since they were released and finally decided on this over HSU Research, SVS and others. They arrived a few days later than was originally quoted, I got them up the stairs and....there was no sound. They turned on, but there was no sound. None. Keep in mind, I own 7 other Subs in my house. So I tested several others in the same set-up and they worked fine. So I called the manufacturer and they said what I was experiencing was "A known problem." and to send them back. Luckily, I was able to get a full refund for both. So, if yours arrive and work great-I will bet they sound good. But for me to pay the money, wait 10 days for them to arrive, lug them upstairs, unpack them, think I am crazy testing them for a whole day, wait on hold at Monoprice and then take the time to pack them back up, wait another 10 days for my refund....It was a 3 week or so odyssey where I had no subs and no money and wasted all that time. Things happen, but I won't buy there subs again. I purchased 2x SVS PB2000 PRO and I absolutely LOVE them. They are flat out awesome. I am very happy. Great value at that price point. ... show more
Reviewed in the United States on March 7, 2020 by RW
    • The best $1500 sub I have heard, period.
Review Image by chucky7 chucky7
I am a member of avsforum.com. Several months ago there was a preview thread about Monoprice’s new Monolith subwoofer line. Since the company is local to me, I expressed my interest in reviewing the 15” subwoofer. Therefore, I quickly accepted the opportunity to do so when an employee contacted me. I received this product on loan from Monoprice for a fair and honest review. When I picked up the Monolith 15” from Monoprice, it almost did not fit into my Mini Cooper Clubman. The box is humongous! Because the cabinet is made of HDF, the 15" sub weighs as much as my relatively light 18" sub JTR Captivator 1400! The sub is double boxed with foam top and bottom. I was happy to see that there are even corner and edge guards. Upon examining the box, I found out inadvertently that Brent Butterworth just reviewed and returned this unit. Man, I am honored to review this unit after a heavy weight like him! The cabinet and grill have their own cloth bag. 2 pairs of gloves are included. I love the white glove treatment! I calculated the cabinet volume of the Monoprice Monolith 15". It is almost as big as my JTR Captivator 1400. The Monolith 15" is wrapped in wood-grain PVC. Knuckle test confirms that the cabinet is inert. The driver has rubber surround. So far, I haven't seen anything that suggests it's not a well-made product. In my 22’ x 14.5’ x 7.5’ family room, I measured the Monolith 15 in 2 ports Extended EQ mode with REW. My AVR was in pure direct mode. The Monolith 15's frequency response showed excellent extension down to 11.5Hz -- enough to hang with my JTR Captivator 1400, a 18" sub with a powerful driver that is known for its output and extension. Not bad, not bad at all. The output compression for the Monolith 15" showed that it achieved 105dB @ 11Hz, 110dB @ 13Hz and 113dB @ 20Hz. My JTR Cap 1400 did dig deeper and had about 5 dB more headroom from 16~80Hz. I like Monolith 15's measurements so far. That is a lot of sub for the money. I picked a frequency response curve where Monolith 15" produced 110dB @ 20Hz to examine its THD. The following are the THD numbers: 12Hz, 108.9dB, 14.4% THD. 16Hz, 109.9dB, 10.7% THD. 20Hz, 112.1dB, 6.75% THD. 25Hz, 112.1dB, 3.97% THD. 30Hz, 107.9dB, 7.49% THD. So far, the Monolith 15” has exhibited an excellent extension, a lot of output and really low distortion... Those are the trifecta for a great sub. Then I started listening to the sub. Within minutes, I had my first impression: if you like how sealed subs sounds, you are going to love this 15" sub. I turned the gain to the max to try to level match with my Captivator 1400. Even at 6dB lower than my usual listening level, I could already tell that the sub is very clean, tight, and controlled. I played Bassotronics - Bass I Love You, Justin Bieber - Baby in convert, the notorious first 40 seconds of Edge of Tomorrow and Olympus Has Fallen - Washington Monument scene. The sub handled all of them with finesse and authority. I even felt a little of the port wind that I love. I have heard very minimal chuffing during Edge of Tomorrow Intro. That is great amp control and/or port design. The kick drums in Eagles - Hotel California and Justin Bieber - Baby were stopping-on-a-dime precise and did not linger. There seemed to be enough tactile response and port wind as well. I am spoiled by my JTR Captivator 1400 but the Monolith 15” has shown enough to make me want to find out what else it can do. After some more REW measurements at a different spot, I found that the Monolith 15" actually has slightly better extension than my JTR Cap 1400. That is pretty amazing for a 15”, $1300 product. I am not that surprised as its in house CEA 2010 max burst numbers rival that of the Rythmik FV15HP on data-bass. After comparing the frequency response and output compression measurements with those of my JTR Captivator 1400, I have no reason to believe that the Monoprice in house numbers are exaggerated in any way. Objectively, if the Rythmik FV15HP ($1338) is considered a poor man's SVS PB13-Ultra ($2000), the Monolith 15" would certainly qualify as another. Sound quality wise, I actually liked the Monolith 15” better than the Rythmik FV18 ($1700) I heard at a forum get-together. Even though I had exclusively listened to the former in extended EQ mode, its DSP still limited the THD to a refreshingly low level. As for untoward noises, there was very faint port noise in World War Z - Grenade scene. In the first 40 seconds of Edge of Tomorrow, I noticed distinctive port noise at 20Hz, but very faint ( read: the lowest and least noticeable among the top 15” and 18” ported subs I have heard so far. Do remember that I auditioned this sub with the gain maxed out! ) at 25Hz and 15Hz. I did not hear any vent pipe resonance no matter how loud I played it. On New Year weekend, my sister and brother-in-law came over for movies. I played Life (2017) with the Monolith 15" for them and they were blown away! Since they are less into bass than I am, I played back at 4dB lower MV and 8dB less bass than my usual listening level. The Monolith 15" still managed to shake my HT with authority. Having watched Life (2017) with my JTR Cap 1400 before, I know the movie is pretty intense in the low end. This time around, I only watched parts of the movie and never did I feel that the Monolith 15" was lacking. That is a praise as some of top 15" and 18" ported and sealed subs I have heard just do not fulfill my needs. Monolith 15" doesn't hit as hard as the top $2000 ID subs out there, but it can provide a glimpse of what the top $2000 subs sound like. Heck, its extension and SQ are already there. It just has less output, which is to be expected. I also like that the Monolith 15” amp plate has enough control to suit the listener’s needs but not too many that might be overwhelming even for a tweaker. This is the most impressive $1500 and under sub that I have heard, period. Highly recommended! ... show more
Reviewed in the United States on September 29, 2018 by chucky7 chucky7

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