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Monolith 10" 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: 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.
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
Anatomy of a Subwoofer
Cabinet and Internal Bracing
HDF (High Density Fiberboard), not MDF, was utilized resulting in a sonically inert cabinet. Internal bracing has been strategically placed to increase overall cabinet strength and limit unwanted panel vibrations that would cause discoloration and distortion. The strong cabinet and bracing combine to ensure you hear massive amounts of bass, not cabinet resonances.
Ports and Grille
The 10" model uses a single 88.5mm port with inner and outer flares. A port is used to ensure high SPL capability at low frequency (fb=21Hz). The dual flares help reduce turbulence and asymmetrical distortions. Additional adjustments can be made by sealing the port with the supplied plug. The "floating" grille is made from non resonant MDF to provide rigidity, while the entire structure is offset from the cabinet to maximize air flow of the woofer and ports.
Every part of this driver has been developed from the ground up and customized to deliver high output, low distortion, and accurate bass. Our unique hybrid cone combines long fiber pulp and fiberglass, taking advantage of the pulp's superior stiffness with the additional rigidity and lightweight properties of fiberglass, to deliver a driver of massive durability and excursion. The result is a cone that achieves optimal motion at all frequencies it is asked to produce and beyond.
1. Lower Suspension
FEA (Finite Element Analysis) modeling and Klippel laser based optimizations were used to design a cone that is capable of astounding >78mm peak-to-peak excursions. The lower and upper suspensions are designed together with the motor structure. The lower suspension is critical for maintaining very low levels of distortion at high excursions, which are required for high SPL at low frequencies.
2. Spider and Cone Venting
The spider is made from multiple layers of NOMEX with integrated tinsel leads hand stitched in place for low mass yet high strength and durability. The purpose of these vents are twofold -- first, they allow convective air flow to cool the voice coil and, second, they reduce asymmetrical compliance due to air compression under the cone/spider, which would appear as unwanted distortions.
3. Woofer Surround
FEA (Finite Element Analysis) modeling and Klippel laser based optimization were utilized to create this durable, high profile surround that’s made from a unique formulation of NBR (NITRILE RUBBER-acrylonitrile-butadiene copolymer). This formulation was developed after months of modeling and prototyping to ensure the highest levels of excursion, without sacrificing linearity or distortion.
4. Motor Structure
The motor is made of CNC milled low carbon steel in the modified undercut "T" pole assembly to focus the magnetic flux. Dual aluminum shorting rings are used to cancel eddy currents, further stabilizing the magnetic flux and significantly lowering distortion. The precision wound, high temperature, all aluminum bobbin (which has a lower thermal compression than copper) enable the voice coil to remain cool. The motor and suspension design is extremely critical for maintaining control of the driver's displacement over a very wide range of input signals, allowing the subwoofer to reach maximum performance and output levels while keeping distortion to a minimum.
All Amp'd Up
The Monolith subwoofer amplifier has an extraordinarily high power output of 500 watts RMS (900 watts peak), which can deliver massive amounts of power when needed. Each Class D amplifier is built around a Texas Instruments 48-bit data path (with 28-bit filter coefficients) DSP engine, allowing virtually unlimited design flexibility with the assurance of no signal degradation. Each amplifier's transfer function, power output limiting, and thermal protection are monitored to the millisecond and are customized for each individual woofer and cabinet air volume combination. This state-of-the-art Class D amplifier technology ensures maximum headroom capability, excellent transient response, high output, and very low distortion when driving the Monolith 10-inch THX Select certified subwoofer.
CEA-2010 SPL Measurements @ 2 meters
|SPL @ 2m||Distortion|
|Hz||Peak (dB)||RMS (dB)||THD%|| 2nd |
| 3rd |
|SPL @ 2m||Distortion|
|Hz||Peak (dB)||RMS (dB)||THD%|| 2nd |
| 3rd |
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
Monoprice's rugged design and rigid quality control standards deliver high quality products at fair prices.
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
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!
- User's Manual (Nov 6, 2017)
THX® and the THX logo are trademarks of THX Ltd., registered in the U.S. and other countries.
|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.|
|Enclosure||Sealed or vented HDF cabinet with horizontal and vertical bracing|
|Amplifier||Class D 500Wrms|
|Frequency Response (-6dB)||Sealed||Vented|
|Harmonic Distortion||<1% 20-100Hz (90dB @ 1m)|
|Variable Level Control||+15/-20dB|
|Crossover||Inline/Bypass variable 40-160Hz|
|Inputs||RCA (2), 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)|
Questions and Answers
1 month ago
1 week ago
I will also mention that Monoprice sent me this sub as a Christmas gift! I sent them a letter (poem actually) and they responded in kind with their own poem! The saved Christmas after my former sub gave out. Still, at this price point, this sub is still a steal of deal! Thank you Monoprice for a great product and great gift!