Monolith by Monoprice 12" THX Ultra Certified 500 Watt Powered Subwoofer
Product # 24457
$799.99
Qty: 1
$799.99
Qty: 2-9
$749.99
Qty: 10-19
$749.99
Qty: 20-49
$749.99
Qty: 50+
$749.99
To see and take advantage of our member pricing sign up for a business account or contact our sales team.
To see and take advantage of our member pricing sign up for a business account or contact our sales team.
Questions and Answers
Do not include HTML, links, references to other stores, pricing or contact info.
My question is about:
If your question is about more than one item, click + to add them.
Browse 23 questions
Browse 23 questions
and 41 answers
What color is it? It appears to be more gray than black.
David K
on Nov 15, 2018
BEST ANSWER: The color is black. It's not a reddish black, dark gray, or blueish black, it's black black.. The unit has a bit of wood grain (may be plastic, looks like wood) so in pictures that grain likely reflects some light. In person the actual wood grain isn't very obvious. For a good size black box it looks nice. The chamfered edges help with the appearance.
I purchased four of the units around the middle of October. They arrived very well packed, double boxed, in perfect condition, and have worked flawlessly. Four subs this size aren't really required, but I have the room so why not.
I purchased four of the units around the middle of October. They arrived very well packed, double boxed, in perfect condition, and have worked flawlessly. Four subs this size aren't really required, but I have the room so why not.
- Reply
- Inaccurate
- Kay S on Nov 15, 2018
- Purchased on Sep 25, 2018
BEST ANSWER: The color is black. It's not a reddish black, dark gray, or blueish black, it's black black.. The unit has a bit of wood grain (may be plastic, looks like wood) so in pictures that grain likely reflects some light. In person the actual wood grain isn't very obvious. For a good size black box it looks nice. The chamfered edges help with the appearance.
I purchased four of the units around the middle of October. They arrived very well packed, double boxed, in perfect condition, and have worked flawlessly. Four subs this size aren't really required, but I have the room so why not.
I purchased four of the units around the middle of October. They arrived very well packed, double boxed, in perfect condition, and have worked flawlessly. Four subs this size aren't really required, but I have the room so why not.
- Reply
- Inaccurate
- Kay S on Nov 15, 2018
- Purchased on Sep 25, 2018
Its black not grey at all. If they could offer a version with a rustic finish (Restoration Hardware look) that would be killer ... if anyone is listening there are high quality cheap "rustic look" laminates from Italy that some companies (Barker modern) use to make rustic kitchen cabinets - its just high quality synthetic but would be very "current" if a sub was offered in such a finish... higher wife acceptance factor.... but it sounds great and looks fine (big and black).
- Reply
- Inaccurate
- Robert D on Nov 15, 2018
- Purchased on Nov 5, 2018
Finish of the Monoprice 12" THX Ultra Certified 500 watt subwoofer is satin black with attractive wood grain texture. The speaker surface is non reflective and blends well with earth toned furniture and speaker finishes.
- Reply
- Inaccurate
- dexter m on Nov 15, 2018
- Purchased on Oct 17, 2018
It's black. Not quite matte, but not glossy in any way. It's meant to look like a black Ash color, and matches the speakers in have with actual black Ash veneers quite nicely.
- Reply
- Inaccurate
- Eric P on Nov 15, 2018
- Purchased on May 20, 2018
This is what I would term piano black. It is BLACK with the grain pattern showing through. It is not GLOSS black. Color rendering on video screens can vary widely.
- Reply
- Inaccurate
- Todd S on Nov 15, 2018
- Purchased on Sep 20, 2018
It is black. There is a wood grain finish which you can see from only a close distance.
- Reply
- Inaccurate
- Martin P on Nov 16, 2018
- Purchased on May 21, 2018
The sub is black. The grain pattern in veneer makes appear grey in picture.
- Reply
- Inaccurate
- Jeremy D on Nov 16, 2018
- Purchased on Oct 25, 2018
It is definitely black. I was very pleased with the look of this sub.
- Reply
- Inaccurate
- Jared W on Nov 15, 2018
- Purchased on Nov 2, 2018
It’s black. It’s got a wood grain texture, but it’s pure black.
- Reply
- Inaccurate
- Loris M on Nov 15, 2018
- Purchased on Sep 19, 2018
Vote for the best answer above!
Why are the 10" and 12" monolith thx subwoofer rated at the same 500 watts RMS ? I would think the 12" would be rated at a much higher wattage than the 10". Can someone please give a good explanation for that? Thanks
A shopper
on Sep 30, 2018
BEST ANSWER: Refer to the measurements given at the bottom of each product listings. The 12" model has much more output than the 10" model. The goal in buying a subwoofer is the getting the most low-distortion output. The details of the amplifier, etc., are interesting, but not really relative to the purchase decision.
- Reply
- Inaccurate
- Jeff S on Nov 15, 2018
BEST ANSWER: Refer to the measurements given at the bottom of each product listings. The 12" model has much more output than the 10" model. The goal in buying a subwoofer is the getting the most low-distortion output. The details of the amplifier, etc., are interesting, but not really relative to the purchase decision.
- Reply
- Inaccurate
- Jeff S on Nov 15, 2018
Because they use the same amplifier.
At the same power the larger woofer still has more displacement, which means lower response and more output.
At the same power the larger woofer still has more displacement, which means lower response and more output.
- Reply
- Inaccurate
- kevin o on Oct 1, 2018
- Purchased on May 20, 2018
I don't think you will notice the difference,,, if you have a small room get the 10 inch! The 12" is big and extremely heavy!!
- Reply
- Inaccurate
- New User U on Oct 19, 2018
- Purchased on Oct 15, 2018
500 watts is plenty to drive whatever woofer you want. The 10 will not have the output of the 12 even with same power rating.
- Reply
- Inaccurate
- New User U on Sep 30, 2018
- Purchased on Nov 7, 2017
Enclose size . More cabinet more pressure and air for driver
- Reply
- Inaccurate
- john s on Sep 30, 2018
- Purchased on Jun 8, 2018
Vote for the best answer above!
Would this sub be enough for a 17x17 living room (not sealed)? Or should I get the 15 inch model instead?
New User U
on Feb 6, 2019
BEST ANSWER: The 12" will do just fine for that size room.
- Reply
- Inaccurate
- New User U Staff on Feb 6, 2019
BEST ANSWER: The 12" will do just fine for that size room.
- Reply
- Inaccurate
- New User U Staff on Feb 6, 2019
It will be plenty I assure you! I just installed in my 15x19 room and it’s overwhelming when cranked up
- Reply(1)
- Inaccurate
- Corey B on Feb 6, 2019
- Purchased on Jan 26, 2019
Thank you!
- Reply
- New User U on Feb 6, 2019
Vote for the best answer above!
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'm an E..E. for whatever that's worth. The units likely will run fine on a 15A circuit. However, a 20A circuit will only cost a little extra for the wire (you'll need #12 instead of #14 Romex) and nothing extra for the breaker or the outlet. A 20A 120V outlet will take either a 20A or 15A plug. There will be less voltage drop in the circuit with larger wire and you'll not wonder over the years if you should have spent another $25 and gotten a larger circuit. If the electrical service panel isn't very far away from the new room, and there are spaces in the panel for extra breakers, then it doesn't cost much extra to run extra circuits, or higher capacity circuits when you are building a room. It will cost a lot more to add circuits in the future.
- Reply
- Inaccurate
- Kay S on Nov 15, 2018
- Purchased on Sep 25, 2018
BEST ANSWER: I'm an E..E. for whatever that's worth. The units likely will run fine on a 15A circuit. However, a 20A circuit will only cost a little extra for the wire (you'll need #12 instead of #14 Romex) and nothing extra for the breaker or the outlet. A 20A 120V outlet will take either a 20A or 15A plug. There will be less voltage drop in the circuit with larger wire and you'll not wonder over the years if you should have spent another $25 and gotten a larger circuit. If the electrical service panel isn't very far away from the new room, and there are spaces in the panel for extra breakers, then it doesn't cost much extra to run extra circuits, or higher capacity circuits when you are building a room. It will cost a lot more to add circuits in the future.
- Reply
- Inaccurate
- Kay S on Nov 15, 2018
- Purchased on Sep 25, 2018
15A will likely work. During the construction phase changing to a 20A circuit will only add a little cost for the wire (go to #12 from #14). The circuit breaker and the outlet will cost the same. The 20A outlet will support both 15A or 20A plugs. It makes good sense to spend what should be $25 extra or so to go with the 20A circuit.
- Reply
- Inaccurate
- Jeff S on Nov 15, 2018
I has a 20 amp circuit put in for this sub and a 12" SVS sub.
- Reply
- Inaccurate
- New User U on Dec 11, 2017
- Purchased on Nov 7, 2017
Vote for the best answer above!
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.
- Reply(1)
- Inaccurate
- New User U Staff on Nov 8, 2017
Thank you for the answer.
- Reply
- 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.
- Reply(1)
- Inaccurate
- New User U Staff on Nov 8, 2017
Thank you for the answer.
- Reply
- New User U on Nov 8, 2017
Go to the Monoprice webpage. Go to the Monolith subwoofers. Access the 10" Monolith sub in one window, the 12" Monolith sub in another separate instance of your browser. Place the two windows side by side. Go to the bottom of each page. You will see the measurements of the two subs. You'll see that the 12" sub has more output than the 10" sub at all frequencies, ported and sealed.
- Reply
- Inaccurate
- Jeff S on Nov 15, 2018
Refer to the measurements given at the bottom of each of the product listings. The 12" model has much more output than the 10" model at all frequencies and with all port configurations.
- Reply
- Inaccurate
- Jeff S on Nov 15, 2018
Vote for the best answer above!
Will the subwoofer run on 220v electricity?
A shopper
on Feb 3, 2019
BEST ANSWER: Check the back power toggle . I believe it has that option . If you don’t see toggle it is 210
- Reply
- Inaccurate
- john s on Feb 3, 2019
- Purchased on Jun 8, 2018
BEST ANSWER: Check the back power toggle . I believe it has that option . If you don’t see toggle it is 210
- Reply
- Inaccurate
- john s on Feb 3, 2019
- Purchased on Jun 8, 2018
Vote for the best answer above!
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" THX Ultra Certified 500 Watt Powered Subwoofer
Monolith by Monoprice 10" THX Select Certified 500 Watt Powered Subwoofer
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.
- Reply
- Inaccurate
- New User U Staff on Sep 5, 2017
BEST ANSWER: We will be adding CEA-2010 @2M burst and RMS measurements by frequency in the near future.
- Reply
- Inaccurate
- New User U Staff on Sep 5, 2017
Vote for the best answer above!
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.
- Reply
- Inaccurate
- New User U Staff on Oct 30, 2017
BEST ANSWER: Yes, you can lay the subwoofer on its side with no loss in performance.
- Reply
- Inaccurate
- New User U Staff on Oct 30, 2017
Vote for the best answer above!
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.
- Reply
- Inaccurate
- New User U Staff on Mar 12, 2018
BEST ANSWER: Yes, there are threaded steel inserts.
- Reply
- Inaccurate
- New User U Staff on Mar 12, 2018
Vote for the best answer above!
Can you tell me the size of the threaded inserts on the bottom of the sub?
A shopper
on Mar 23, 2018
BEST ANSWER: M6-1.00 (course thread) 20-25mm long machine screws depending on your application. For feet, Reliable Hardware Company RH-1606-8-A Guitar Amplifier Cabinet feet (1-pack of 8) work fine.
- Reply
- Inaccurate
- Dennis R on Oct 14, 2018
BEST ANSWER: M6-1.00 (course thread) 20-25mm long machine screws depending on your application. For feet, Reliable Hardware Company RH-1606-8-A Guitar Amplifier Cabinet feet (1-pack of 8) work fine.
- Reply
- Inaccurate
- Dennis R on Oct 14, 2018
Vote for the best answer above!
Are there any issues with placing the subs on their side? The THX 12 and THX 15 height will get too close interfere with my screen and make reflections. Particular concern of amplifier air flow and over heats?
A shopper
on May 14, 2018
Monolith by Monoprice 12" THX Ultra Certified 500 Watt Powered Subwoofer
Monolith by Monoprice 10" THX Select Certified 500 Watt Powered Subwoofer
Monolith by Monoprice 15" THX Ultra Certified 1000 Watt Powered Subwoofer
BEST ANSWER: No issues, you can place the subwoofer on its side.
- Reply
- Inaccurate
- New User U Staff on May 15, 2018
BEST ANSWER: No issues, you can place the subwoofer on its side.
- Reply
- Inaccurate
- New User U Staff on May 15, 2018
Vote for the best answer above!
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.
- Reply
- Inaccurate
- New User U Staff on May 21, 2018
BEST ANSWER: The feet are removable, and they are screw on.
- Reply
- Inaccurate
- New User U Staff on May 21, 2018
Vote for the best answer above!
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.
- Reply
- Inaccurate
- New User U Staff on Aug 6, 2018
BEST ANSWER: Yes, these should be arriving in mid to late September.
- Reply
- Inaccurate
- New User U Staff on Aug 6, 2018
Vote for the best answer above!
Does this have a 12V monaural mini plug Trigger jack for automatically turning on and off automatically when the receiver is turned off?
A shopper
on Sep 17, 2018
BEST ANSWER: Thank you for your question.
Currently we do not sell trigger cables.
Currently we do not sell trigger cables.
- Reply
- Inaccurate
- Tyler C Staff on May 22, 2019
BEST ANSWER: Thank you for your question.
Currently we do not sell trigger cables.
Currently we do not sell trigger cables.
- Reply
- Inaccurate
- Tyler C Staff on May 22, 2019
Vote for the best answer above!
More photos? Especially with grill on?
A shopper
on Oct 4, 2018
BEST ANSWER: You can see photos at Audioholics.com or avsforum.com
- Reply
- Inaccurate
- New User U Staff on Oct 4, 2018
BEST ANSWER: You can see photos at Audioholics.com or avsforum.com
- Reply
- Inaccurate
- New User U Staff on Oct 4, 2018
Vote for the best answer above!
What is the total weight and dimensions of the box this comes in? I want to get an estimate from my freight forwarder to ship to Hawaii.
New User U
on Jan 16, 2019
Vote for the best answer above!
Is the grille made from steel or a hardened material to prevent damaging the woofer?
A shopper
on May 21, 2019
BEST ANSWER: The grille is cloth, and I'm not sure who or what you would need to protect the woofer from.
- Reply
- Inaccurate
- New User U Staff on May 21, 2019
BEST ANSWER: The grille is cloth, and I'm not sure who or what you would need to protect the woofer from.
- Reply
- Inaccurate
- New User U Staff on May 21, 2019
Vote for the best answer above!
Are the in-house CEA-2010 numbers listed in THX mode or Extended mode?
A shopper
on Mar 4, 2018
Monolith by Monoprice 12" THX Ultra Certified 500 Watt Powered Subwoofer
Monolith by Monoprice 10" THX Select Certified 500 Watt Powered Subwoofer
Monolith by Monoprice 15" THX Ultra Certified 1000 Watt Powered Subwoofer
230VAC, 50Hz workable?
A shopper
on Oct 7, 2018
Ok with 230VAC, 50Hz?
Hon Yew L
on Oct 7, 2018
Can it be ordered with support for 220v-240v @ 50Hz. For people importing in Uk, AUS, NZ?
A shopper
on Jan 8, 2019
Monolith by Monoprice 12" THX Ultra Certified 500 Watt Powered Subwoofer
Monolith by Monoprice 3x200 Watts Per Channel Multi-Channel Home Theater Power Amplifier - Factory Refurbished/B-Stock
Monolith by Monoprice 5x200 Watts Per Channel Multi-Channel Home Theater Power Amplifier with XLR Inputs
Monolith by Monoprice 5x200 Watts Per Channel Multi-Channel Home Theater Power Amplifier (Open Box)
Where near San Francisco can I hear it?
Ivan B
on Mar 31, 2019
Monolith by Monoprice 12" THX Ultra Certified 500 Watt Powered Subwoofer
Monolith by Monoprice 10" THX Select Certified 500 Watt Powered Subwoofer
Monolith by Monoprice 10" THX Select Certified 500 Watt Powered Subwoofer (Open Box)
Monolith by Monoprice 12" THX Ultra Certified 500 Watt Powered Subwoofer (Open Box)
What’s the amp draw of the 12” sub?
A shopper
on May 4, 2019
Questions For Similar Products
Reviews
4.9 / 5.0
23 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
21
2
0
0
0
Awesome lows that are distortion free. Shakes the house.
- Was this review helpful? Yes (1) No (0)
- Flag as Inappropriate
- Was this review helpful? Yes (1) No (0)
- Flag as Inappropriate
A lot of sub for the money
Tight,deep,powerful are just a few adjectives that come to mind when listening to my sub. Paired with my Klipsch The Sixes, running through a Creatvie Labs sound blaster G6, I'm in 2.1 gaming desk heaven!!! Loving it!!!
- Was this review helpful? Yes (1) No (0)
- Flag as Inappropriate
January 19, 2019
- Was this review helpful? Yes (1) No (0)
- Flag as Inappropriate
12” Monolith
Excellent sound, and build quality with performance to rival and exceed similar models at double the price point (relative to my personal past experiences with other quality name brand subwoofers). Only Time will tell if the amplifier and speaker hold up to extended use and occasional abuse.
- Was this review helpful? Yes (5) No (0)
- Flag as Inappropriate
- Was this review helpful? Yes (5) No (0)
- Flag as Inappropriate
Great sub for movies
Awesome sub for movies. Goes low, has some real slam to it.
Not so great on music. It is a little slow and sounds a little bloated. Tried it with and without the foam plugs, it still did not sound right to me.
Will use my Paradigm ultracube 10 for music and switch this one off.
Overall very pleased and would recommend this sub
Not so great on music. It is a little slow and sounds a little bloated. Tried it with and without the foam plugs, it still did not sound right to me.
Will use my Paradigm ultracube 10 for music and switch this one off.
Overall very pleased and would recommend this sub
- Was this review helpful? Yes (1) No (7)
- Flag as Inappropriate
- Was this review helpful? Yes (1) No (7)
- Flag as Inappropriate
Great Sub!
I’ve only had the Monolith 12 a couple days now. Loving it so far. Pretty much like most of the other reviews I’ve read, the bass is great, clean, and accurate. Glad I decided to get this sub. Once they have a sale on them I’ll be picking up a second one.
Next to the Sunfire SDS-8 it replaced.
- Was this review helpful? Yes (4) No (0)
- Flag as Inappropriate
- Was this review helpful? Yes (4) No (0)
- Flag as Inappropriate
Great value!
Great value! It is taking a couple of weeks to break in, but it sounds amazing! The only thing I wish it had were speaker level in/outs so I could run my definitive tech bookshelf speakers through its crossover.
- Was this review helpful? Yes (4) No (0)
- Flag as Inappropriate
- Was this review helpful? Yes (4) No (0)
- Flag as Inappropriate
Big and heavy (bass that is)
Sounds great, goes deep and enhances music listening and movie watching. Effortless output at high volumes. Only real negative is the feet are not tall enough to allow fingers under for placing and fine adjustments. Size and weight are a drawback, but are known up front. I would consider a second to ensure even output throughout the room but I'm afraid that all of that bass will tear my pants off.
- Was this review helpful? Yes (9) No (0)
- Flag as Inappropriate
- Was this review helpful? Yes (9) No (0)
- Flag as Inappropriate
Totally met and exceeded my expectations
Ordered 2 of these. Very musical, matched very well with my Magneplanar speakers 1.7's
Very happy with price, quality, delivery
and overall experience. AVS forums and their reviews helped to make this decision.
Very happy with price, quality, delivery
and overall experience. AVS forums and their reviews helped to make this decision.
- Was this review helpful? Yes (8) No (0)
- Flag as Inappropriate
- Was this review helpful? Yes (8) No (0)
- Flag as Inappropriate
An excellent product at a reasonable price
I have four of these 12" subs. The all arrived well packed, double-boxed, with no damage. Likely I don't really need four subs, but having four subs has resulted in very even response throughout the room. The output is all that I could ask for, and likely much more output is available. The low bass is just "there." The subs don't call attention to themselves. If you want a low distortion sub with good output at a reasonable price it is hard to beat this unit.
- Was this review helpful? Yes (5) No (0)
- Flag as Inappropriate
November 15, 2018
- Was this review helpful? Yes (5) No (0)
- Flag as Inappropriate
sounds great
I'm running this with Revel Performa2 F206s and the sub is very, very, very clean.
- Was this review helpful? Yes (2) No (0)
- Flag as Inappropriate
- Was this review helpful? Yes (2) No (0)
- Flag as Inappropriate
Reviews for Similar Products