Additional information

Speaker Placement

Front – Left / Right, Rear / Surround



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FREE 5-years unlimited phone support


5 Years FULL Replacement

Color Selection

Black, White

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Definitive Technology Demand Series D11 High-Performance Bookshelf Speakers - Pair



In The Continental US

5-Year Warranty

On All Speakers


No Sales Tax!

SKU DEMAND11B-1 Categories ,

Definitive Technology Demand D11 high-performance bookshelf speakers deliver full-range, room-filling sound and precise imaging in a modern, elegant styling. Featuring technology advancements to both our aluminum dome tweeter and midrange/woofer sections, each speaker delivers an unrivaled sweet spot, smoother high-frequency reproduction, and three-dimensional imaging for the most technically-advanced, premium bookshelf listening experience.

Brand New Products

All items we sell are New and 100% Genuine products!

Price Match Guarantee

We guarantee to match any out-the-door lower price!

Hassle Free Returns

20-Day Returns on all products (Check store policy for more details)


  • Dimensions (H x W x D): 13″ x 7.25″ x 12.5″
  • Driver enclosure type: MDF cabinet with extruded natural bead-blasted aluminum front baffle
  • Driver complement
    • 6.5″ diameter polypropylene BDSS bass – mid/woofer
    • 1″ diameter annealed aluminum dome and laterally offset – tweeter
    • 6″ x 10″ (H x W) passive – bass radiator
  • Total frequency response: 48Hz – 24Hz
  • Nominal impedance: 8 ohms
  • Sensitivity (1 watt @ 1 meter): 90dB
  • Lower and upper – 3dB limits: 61Hz – 22Hz
  • Mounting type: 1/4″ – 20 threaded insert
  • Speaker inputs: 5-way binding posts – gold plated
  • Recommended amplifier power per channel: 20W – 200W
  • A/V receiver crossover settings: Small (60Hz)

Product Highlights:

  • pair of high-performance bookshelf speakers for music or home theater
  • 1″ aluminum dome tweeter with 20/20 Wave Alignment Lens™ for excellent high-frequency performance
    • laterally offset tweeter assembly helps creates a precise center stereo image
  • 6-1/2″ BDSS™ (Balanced Double Surround System) polypropylene woofer for smooth midrange and punchy bass
    • Linear Response Waveguide™ provides smooths off-axis frequency response and even sound dispersion
  • 6″ x 10″ racetrack-shaped passive radiator for increased bass extension
  • frequency response: 61-22,000 Hz (-3dB)
  • recommended amplifier power: 20-200 watts
  • sensitivity: 90 dB
  • impedance: 8 ohms
  • 5-layer piano black high-gloss finish
  • aluminum front baffle
  • removable magnetic grille
  • two sets of binding posts for bi-amping or bi-wiring
  • 7-5/16″W x 13-1/16″H x 12-15/16″D each
  • weight: 19 lbs. each


Free Shipping within the Contingent United States can typically take 1-2 full weeks for delivery (or sooner).
Once your product ships out we will ALWAYS email you a tracking number for your convenience to be able to track online.

Air and Ground shipment time frames are business days only, and exclude weekends and/or holidays.
Orders outside the 48 continental States require Second Day or Next Day Air service.


NationwideStereo.com does not assess duties for international orders and they are subsequently subject to applicable customs, import duties and taxes, which are the sole responsibility of the customer. Please contact your local customs office for details.

  • Nationwide Stereo guarantees you the utmost in quality, authenticity, and reputability
  • 20 Day Return Policy*
  • No sales tax charged as we are located out of a non sales tax state
  • 1-5 Year NationwideStereo Hassle Free Replacement Warranty on all items
At Nationwidestereo.com, your complete satisfaction is important to us. If for any reason you are not 100% satisfied with your purchase simply create an RMA under our Contact Us Page & send your item back to Nationwide Stereo in its new, unused condition, with original packaging and we will be happy to provide you with either a partial refund of the purchase price or a store credit toward an exchange (excluding shipping & handling charges). Some conditions may apply. Please read our full return policy.
Our Products:
  • are authentic, never used, in the original box with manuals.
  • have a 1 to 5 year warranty program (see our warranty section for details).
Your comfort, security and confidence are our utmost concern. All transactions are digitally encrypted using the latest technologies. We never share any of your information.

Do the products you sell have a warranty?

Yes all products we sell come with an equivalent to manufacturer warranty for the same time duration as the manufacturer would supply you with.  If you ever experience an issue with your item purchased from us, you will simply have to contact us for repair or replacement on your product within the warranty time period*


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