Definitive Technology Demand Series D9 High-Performance Bookshelf Speakers

Definitive Technology Demand D9 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.



Lower 48 U.S. States


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  • Dimensions (H x W x D): 11.71″ x 6.5″ x 11.97″
  • Driver enclosure type: MDF cabinet with extruded natural bead-blasted aluminum front baffle
  • Driver complement
    • 5.25″ diameter polypropylene BDSS bass – mid/woofer
    • 1″ diameter annealed aluminum dome and laterally offset – tweeter
    • 5″ x 9″ (H x W) passive – bass radiator
  • Total frequency response: 44Hz – 24Hz
  • Nominal impedance: 8 ohms
  • Sensitivity (1 watt @ 1 meter): 88dB
  • Lower and upper – 3dB limits: 64Hz – 22Hz
  • Mounting type: 1/4″ – 20 threaded insert
  • Speaker inputs: 5-way binding posts – gold plated
  • Recommended amplifier power per channel: 20W – 150W
  • A/V receiver crossover settings: Small (80Hz)
  • Compact bookshelf speaker delivers full, room-filling sound and precise imaging
  • Passive 2-way crossover delivers full, rich and powerful soundstage
  • Offset tweeter delivers precise center stereo image
  • BDSS™ midrange/woofer delivers full mids and punchy bass
  • Linear Response Waveguide™ delivers natural mids and more precise imaging
  • Integrated passive bass radiator produces powerful low-end
  • Removable magnetic grille
  • MDF cabinet with natural bead-blasted aluminum front baffle eliminates distortion
  • Total Frequency Response: 44 Hz – 24,000 Hz
  • Nominal Impedance: 8 ohms
  • D9 Weight:  32.4 lbs
  • D9 Dimensions ( H x W x D): 11.71” x 6.5” x 11.97”

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