Definitive Technology A90 Dolby Atmos Speaker

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Key Features:

  • Dolby Atmos enabled speaker modules
  • designed for use with the Definitive Technology BP-9020, BP-9040, and BP-9060 tower speakers
    • A90 speakers attach to the top of the towers
    • built-in speaker connector terminals mate with terminals on matching tower speakers
  • Dollby Atmos Certified, DTS:X™ compatible
  • 1″ annealed aluminum dome tweeter
  • 4-1/2″ Balanced Dual Surround System (BDSS) mid/bass driver per speaker
  • drivers are angled up to reflect sound off the ceiling for overhead effects
  • acoustic suspension (sealed) enclosure
  • frequency response: 86-40,000 Hz
  • sensitivity: 89.5 dB
  • recommended amplifier power: 25-100 watts
  • impedance: compatible with 8-ohm outputs
  • 6″W x 4″H x 11″D
  • Weight: 6 pounds


Download Full Technical Specification

Price Per Pair



If you’re looking for an easy way to seamlessly integrate Dolby Atmos surround sound with your Definitive Technology BP-9020BP-9040, or BP-9060 tower speakers, we have something to show you. When you add these Definitive Technology A90 speaker modules to those towers, you can get some pretty amazing home theater sound. They work with Dolby Atmos soundtracks to add a height dimension to your home theater, for enhanced immersion and spatial effects.

What You Need: To experience Dolby Atmos using the Definitive Technology A90 elevation speaker module, you’ll also need the following.

  • A minimum of a 5.1ch speaker system with a pair of Definitive Technology BP9000 series tower speakers (BP9020, BP9040, or BP9060).
  • A Dolby Atmos enabled AV receiver or pre-processor.
  • A Blu-ray Disc player, compatible Blu-ray game console, or connected streaming player set to its PCM bit stream output option (must be connected via HDMI).
  • Dolby Atmos encoded source material (Blur-ay disc, game disc, streaming content, etc.)

Installation Notes: To achieve the best Dolby Atmos experience possible, your room’s ceiling should meet the following requirements.

  • You ceiling should be flat.
  • Your ceiling material should be acoustically reflective (examples include drywall, plaster, hardwood, or other rigid, non-sound absorbing material).
  • Ideal ceiling height is between 7.5′ and 12′.
  • Maximum recommended ceiling height is 14′.

Additional information


Definitive Technology

Technical Specification

Download Full Technical Specification



Compatibility Definitive Technology BP9000-Series Speakers: BP9060, BP9040, and BP9020
Frequency Response 86 Hz to 40 kHz
Sensitivity 1 W @ 1 m: 0 to 89.5 dB
Recommended Amplifier Power 25 to 100 W
Impedance 8 ohms
Drivers 1x 1″ (2.54 cm) aluminum dome tweeter per speaker
1x 4.5″ (11.43 cm) midrange per speaker
Inputs Proprietary connector from main speaker
Dimensions (W x H x D) 6 x 3.75 x 13″ (15.2 x 9.5 x 33 cm)
Weight 6 lb (2.72 kg)
Packaging Info
Package Weight 14.6 lb
Box Dimensions (LxWxH) 16.4 x 13.0 x 9.9″


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