Mattresses & Bedding
Free Shipping on Thousands of Products
Award-Winning Customer Service
Definitive Technology

Definitive Technology Powered SuperCube 4000 Subwoofer - SC4000

Abt Model: SC4000 | UPC Code: 093207080364
Sold As Each/ Huge Bass From A Compact Enclosure/ 8 " Subwoofer Driver Pressure Coupled To Two 8 " Ultra Low Bass Radiators/ 1500 Watt Digital Tracking Power Amplifier/ 56 Bit Digital Signal Processor Preamp Stage/ Disappearing Alpha-Numeric Display/ Performance Optimizer Remote Control/ Black Finish
Special Order: 7 To 14 Day Delivery Time (details)
Your Shipping Zip Code: 20149 (change)

Free Shipping Details (details)
This items ships UPS and a signature is required.

Product Questions - Ask

Average Customer Reviews

Need it installed? View installation options

Product Details

Definitive Technology SuperCube 4000 High Performance Powered Subwoofer - SC4000 (Sold As Each)

Key Features:

  • Huge bass from a compact enclosure
  • 56 bit Digital Signal Processor preamp stage
  • All-new 1500 Watt digital tracking power amplifier
  • Wireless connectivity (with purchase of optional wireless kit)
  • Performance Optimizer Remote control for convenient and precise system tweaking
  • High gloss lacquer finish complements any décor
  • Quick, tight accuracy for full music enjoyment
  • Explosive bass response for movies
  • Disappearing alpha-numeric display


  • Huge Bass from a Tiny Enclosure
    If you want all the high impact bass excitement of the finest home theater audio systems without consuming a large amount of floor-space, and if you want the latest features and wireless connectivity, then this is the subwoofers for you. The SuperCube® 4000 (along with the SuperCube 6000) is the newest model in the famed SuperCube Series and incorporates the latest digital technologies for bass performance that will leave you slack-jawed in amazement and delight. Definitive's engineers redesigned every part for maximum performance and added convenience and connectivity features that make them easy to use, versatile and perfectly tailored to your system and room for heart-pounding bass that will not fail to astound your friends and neighbors.

  • Music Lovers Rejoice
    Subwoofer manufacturers are always talking about how "explosive" their subwoofers are (frankly so do we), but there's more to home entertainment than rocket blasts and explosions—there is also music, be it in the movies you watch or the CDs you enjoy. And for music the quality of a subwoofer's performance is way more important than the quantity. The bass should be "tight," precise, and musical. Bass notes should have pitch, not just a dull thud or drone. Definitive Technology was started by and is run today by music fanatics and the very first thing we do to evaluate a subwoofer prototype design is to listen to music. If a subwoofer doesn't do an exemplary job with music reproduction, it's not a Definitive.

  • Features in the Service of Superior Performance
    The most obvious departures from previous SuperCube models are the addition of a digital display (cleverly hidden under the grille cloth) and a wireless remote. They're much more than an aid for chronic couch potatoes; they're serious performance optimizing tools for perfectly blending the subwoofer to your system and room and correcting for differences in program material.

    In an ideal audio system the subwoofer works "invisibly," simply adding deep, loud bass without calling attention to itself—blending seamlessly with the main speakers. The key to seamless main speaker/sub blending is finding the perfect crossover frequency, equalization and phase settings for your system and room. And the best place to make those "set and forget" adjustments is from your listening chair via a wireless remote. For everyday use the remote makes it easy to set just the right amount of bass output to compensate for program material differences. As you make settings adjustments, the hidden display lights up to indicate the setting value and then turns off a few seconds later. You'll get exactly the bass performance you want – effortlessly at the touch of a button.

  • Digital Tracking Amplifier for Clean High Output
    The SC4000 features a designed-from-the-ground-up brawny Class HD digital tracking amplifier that is optimized for real world power demands to deliver low distortion and high output. As well as producing high continuous power to cleanly reproduce sustained bass, this all-new Definitive amp has a high crest factor to deliver considerably higher power during short, transient peaks such as bass drum kicks and on-screen artillery blasts. You'll enjoy high volume, high impact, and low distortion bass from your favorite action/adventure films and TV shows without sacrificing the smooth response and quick precision needed for music. As well as being powerful, the new Definitive amps are environment-friendly. The amplifiers go into idle mode less than 30 minutes after the cessation of signal and draws a mere half Watt or less of current, meeting international standards for low energy consumption.

  • Computers in the Subwoofer Exert Precise Control
    The SuperCube 4000 has an integrated 56 bit Digital Signal Processor (DSP)–in essence a mini computer–that extends and improves the bass response. Multi-band digital protection systems tightly monitor and control the woofer system to prevent distortion and woofer damage at ultra-high volume levels with a minimum of audible artifacts. In contrast to simpler one-band compression/limiting circuits used in competing subwoofer amp designs, the Definitive subs feature a Multiband Dynamic Range Optimizer (M-DRO) that divides the frequency range into multiple bands. If the DSP detects an overdrive condition in the upper bass range, it applies just the right amount of compression and to prevent distortion to just that range without compressing the low bass, thereby vastly reducing the audible compression artifacts. The bottom line is that SuperCube bass is always tight, highly detailed and distortion free.

  • Rock Solid Cabinets Ensure Pure Low Distortion Response
    The cabinet of a loudspeaker plays a large part in its sonic performance. Resonance and vibration can add unwanted distortion as well as drain away important acoustical energy from the system. Definitive's subwoofer enclosures have been specifically engineered to be totally inert and vibration free, to ensure you of absolutely pure sonic reproduction. The front and rear panels are nearly 2-inches thick and the cabinet incorporates multiple internal braces to ensure total solidity. To top off the extraordinary performance, the SuperCube 4000 is finished in gorgeous piano-gloss black.

  • High-Definition Subwoofer Drivers Deliver Superior Detail and Lightning-Fast Transient Response
    The powerful, high-definition drivers used in the new SuperCubes were specifically engineered for their task: to deliver rock-solid low distortion bass, reaching down to the lowest frequencies, with an outstanding quality of superior transient response ("tightness"). The special ultra-stiff cones are joined to specially formulated surrounds and long-throw voice coils and spiders. The incredibly rigid cast Aluminum baskets are engineered to hold the massive magnet structures and large voice coils in absolute alignment. The high temperature voice coils are made of aluminum wound with triple insulated ultra-pure copper wire and baked in epoxy for superior power handling and reliability.

    The SuperCube 4000 features a new 8-inch (20cm) subwoofer driver pressure coupled to two 8-inch (20cm) Ultra Low Bass Radiators. The total piston area is greater than a 12-inch diameter woofer but with far greater speed, musicality and control than a single large diameter woofer could ever deliver—and it all fits in an impossibly tiny enclosure that is easy to tuck away out of sight. The SuperCube 4000 can fill most domestic spaces with loud, visceral, extended and musical bass yet it occupies less than a square foot of floor space!

  • A Full Range of Inputs Facilitates Easy Hookup to Any System
    The SuperCube 4000 can connect to any audio system via your choice of single cable LFE, stereo line level and speaker wire level inputs. Or you can choose to go wireless with the optional wireless connectivity kit for the ultimate in connection convenience.


  • Driver Complement: One 8" (20cm) high excursion active subwoofer driver, two 8" (20cm) planar low-bass radiators
  • Frequency Response: 16Hz - 200Hz
  • Internal Amplifier Power: 1500 Watts
  • Inputs: One LFE line-level, one pair line level, one pair 5-way binding posts (LP filtered)
  • AC Power requirements: Available in 120V and 240V versions

Approximate Dimensions:

  • Height: 11-7/8"
  • Width: 11"
  • Depth: 12"

Approximate Weight:

  • Shipping: 32 lbs

Warranty Information:

  • Manufacturer Warranty (authorized online retailer)
    • Electronic Components: 3 Years Parts and Labor
    • Drivers and Cabinet: 5 Years Parts and Labor

Features and specifications are subject to change without notice.

Downloadable Resources Get Adobe Reader
Need Accessories?
Speaker Wire Speaker Wire
Dramatically increase sound quality or add distance from your receiver with our speaker wire.
More reasons to buy the Definitive Technology SC4000 from Abt Electronics
  • is an authorized dealer (Learn More).
  • The Definitive Technology SC4000 is Brand New.
  • The Definitive Technology SC4000 Ships in a Factory Sealed Box.
  • Abt ships this product for free!
Amplifier TypeDigital Tracking
ConnectivityLFE, RCA, Binding Posts
Frequency Response16Hz - 200Hz
Enclosure TypePassive Radiator
Magnetic shieldingNo
RMS Output Power1200W
Speaker TypeSubwoofer
Woofer Size (inches)8
Height (inches)11.87
Width (inches)11
Depth (inches)12


Speaker Wire
Speaker Wire
Dramatically increase sound quality or add distance from your receiver with our speaker wire.
AudioQuest Flat Series 30 Feet Speaker Cable
Special Order: 7 To 14 Day Delivery Time
$ 58.75
AudioQuest Flat Series 50 Feet Speaker Cable
Special Order: 7 To 14 Day Delivery Time
$ 94.75
Check here if you only want to add the selected accessories
to the cart and click the "add to cart" button for this item.


by PowerReviews
Definitive Technology SuperCube 4000 High Performance Powered Subwoofer

(based on 7 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.

Reviewed by 7 customers

Displaying reviews 1-7

Back to top


simply the best in class


from Tucson AZ

Comments about Definitive Technology SuperCube 4000 High Performance Powered Subwoofer:

I Just bought an SC4000 sub to replace an old Mirage sub that I have owned since 1993. In terms of output it is equal to any 12inch sub out there. However, the SC4000 shines in bass definition and musicality. I think it is the best subwoofer out on the market at this price point. Also a big thanks to customer support for giving me tremendous insight on setting it up. Furthermore thank you Definitive for send out some new Socks For my 1997 DP10s they look new again! If someone is on the market for a new sub I recommend checking Definitive out!


Def Tech Does it Again - QUALITY!


from Orlando

Comments about Definitive Technology SuperCube 4000 High Performance Powered Subwoofer:

This is my first true sub-woofer purchase. Have had subwoofers as part of 5.1 systems, but nothing like this. Def Tech has done it again. The SC 4000 is perfect -- exactly what I was looking for to compliment a pair of fine tower speakers that have excellent midrange and detailed high end, but the low end was lacking a bit due to the narrow construction of the cabinets. At first I was skeptical of the remote -- seemed a bit gimmicky, but it is so wonderful to sit back and be able to make little adjustments on the fly. The sound is pure, tight and true, with lots of adjustments to dial in the desired effect. No ridiculous whompf whompf. I adjusted the settings to a subtle layer of low end needed to finish out my 2-channel music system. Happy to say my quest for the perfect system is now complete and the sound is perfect! (Or at least perfect for my budget). The EQ adjustment is nice. Going from classical to rock-n-roll I did indeed find it useful to switch the EQ level to another setting. Still not sure what EQ is, but it works! The price was great. The cube itself is compact and gorgeous in the piano black. My wife simply can not complain. :-) Everything about it speaks of quality, which is typical of Def Tech. I have owned several speakers and speaker sets from DT and they only know one way -- quality. Thank you Def Tech. Audiophiles like me salute you! Highly recommended.


Supercube 4000


from Virginia, United States

Comments about Definitive Technology SuperCube 4000 High Performance Powered Subwoofer:

This is a great piece of engineering. My room size is 32 x 24. If you take the time to setup and calibrate your system you will not be disappointed. Awesome lows and will perform with the best of them.


Small sub but huge bass


from Chicago, IL

About Me Audiophile

Verified Buyer


  • Attractive Design
  • Easy To Set Up
  • Great Sound Quality


    Best Uses

    • Home Theater

    Comments about Definitive Technology Powered SuperCube 4000 Subwoofer:

    If you're worried about the size of this sub-woofer, don't be. Great sub, great bass!

    • Was this a gift?:
    • No

    Excellent Sub


    from Gresham, OR, United States

    Comments about Definitive Technology SuperCube 4000 High Performance Powered Subwoofer:

    Couldn't be happier with the performance, features and price. I have a fairly expansive LR, DR and kitchen all under the same vaulted roof. I was worried the SC-4000 might not be able to fill it up, but was pleasantly surprised that it had absolutely no problem with deep, rich, full bass. It'll blend when you want it to, and with the 4 EQ settings, you can overpower the room with full theater sound. Thanks Definitive for a great, affordable high-end equipment.

    (2 of 2 customers found this review helpful)


    Amazing, Excellent, and so much more..


    from Wausau, WI, United States

    Comments about Definitive Technology SuperCube 4000 High Performance Powered Subwoofer:

    I had a Super Cube 3 and upgraded to this sub, I had to retune my entire theater, (which it was about time to do) and when I was done I wanted to watch all my movies again as I herd sound and things that I had never heard before. I was like this sub brought new life to a sleeping theater. This truly was an amazing upgrade and the remote is great, especially when you want to make an on the fly change to the sound. A+++ Definitive, you did have proven yourselves again, and without breaking my wallet.

    (3 of 3 customers found this review helpful)


    loud, low, and pretty are ...


    from Undisclosed

    Comments about Definitive Technology SuperCube 4000 High Performance Powered Subwoofer:

    loud, low, and pretty are the first words that come to mind when describing this sub. my recommendation is buy this product and keep it in the open to show off. one last thing I think is important. dont let the size fool you. IMO these should be paired with a good set of tower speakers and given room to breath. this is no bedroom sub. if you want to pair with bookshelf or cubes go with the sc 2000. have fun!

    Displaying reviews 1-7

    Back to top

    Definitive Technology Powered SuperCube 4000 Subwoofer

    Definitive Technology Powered SuperCube 4000 Subwoofer

    Special Order: 7 To 14 Day Delivery Time

    Call us
    live chat
    Chat Now