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Definitive Technology DT6.5STR 6.5inch Single Stereo Surround In-Ceiling Speaker Black

Ships in 4 to 7 Days

DT Custom Install Series Round 6.5" Single Stereo and Surround In-Ceiling Speaker
Ultimate In-Ceiling Versatility


Definitive Technology DT6.5STR 6.5" Round Single Stereo & Surround In-Ceiling Speaker Black

With the flip of a switch, the DT6.5STR transitions from the ideal single stereo speaker for smaller spaces, like bathrooms, to a surround speaker that lavishes your home theatre with rich immersive fidelity.

Key Features
• Switchable from single-stereo mode to surround mode
• HD crossovers, micro-perf grilles, premium materials
• Tweeter: 2 x 0.75” Annealed Aluminium Dome
• Midrange: 1” x 6.5” composite mineral-filled polypropylene driver
• Frequency Response: 27 - 30,000Hz
• Sensitivity: 89dB
• Power Handling: 10 - 100w (stereo), 10-200w (surround
• Impedance: 8 Ohm
• Mounting Depth: 7.78cm
• Cutout Diameter: 18.41cm
• Overall Diameter: 21.11cm

Stereo speakers love 4-core speaker cable
Because stereo speakers have connections for both left and right channels, running a single 4-core speaker cable is recommended as you only need to run a single cable to each of the stereo speakers. We have 4-core speaker cable available by-the-metre, or by-the-roll!

Definitive Audio Performance - The In-Ceiling Speaker That Covers It All

The DT6.5STR features dual .75” Pivoting Dome Tweeters and a 6.5” Mid/Woofer and 1” Pivoting Dome Tweeter for clear, detailed stereo or immersive, room-filling surround sound. Every component in the DT Series is optimized for superior quality and sound. And each component is conceived and developed in-house for a listening experience that delivers and a product that endures.

Single-Speaker stereo solution

The DT6.5STR is ideal for limited-space applications such as hallways, kitchens, bathrooms, and offices. Its innovative configuration features a stereo setup within a single round ceiling speaker. Bristling with technologies such as dual voice coils powering the mid/bass driver and an innovative dual-angle tweeter configuration, the DT6.5STR produces broad stereo dispersion from just one speaker.

High-Performance Audio Components in your walls and ceilings

Teeming with high-tech components such as annealed aluminium tweeters, polypropylene mineral-filled mid/bass cones, and anti-diffraction surfaces, the DT Series reproduces audio with the legendary voicing you've come to expect from Definitive Technology.


Pure Aluminum Swivel Tweeter

The ultralight, rigid construction of the DT6.5STR's aluminium dome tweeter enables it to play significantly higher frequencies than we can hear, allowing for optimum linearity within the range of human hearing. The swivel mechanism lets installers orient the tweeter for precise direct sound or diffuse surround sound - or anything in between.

Polypropylene Mineral-filled Midrange/Woofer

Coupled with butyl rubber surrounds, the polypropylene mineral-filled midrange/woofer cone is a superb combination of lightness, stiffness, excursion, and control. The result: quick and punchy bass with smooth and detailed midrange.

High-Definition Crossover

The crossover is critical to delivering high-end audio quality. A high-definition crossover network with Mylar capacitors is a key contributor to the DT6.5STR's smooth and accurate performance throughout its entire frequency range.

Low-Diffraction Swivel Tweeter for high-performance high frequencies

The DT6.5STR features our low-diffraction swivel tweeter. Its specially-designed housing eliminates cross-driver interference with the midrange driver while improving dispersion and off-axis response. The swivel mechanism enables the installer to aim the tweeter for pinpoint direct audio or diffuse surround sound.

Quick and Easy Installs
Truly Custom Installations

Using only four common tools and a pencil, installers will find it a breeze to install the DT6.5STR in-ceiling speaker. With strong yet lightweight construction, integrated pivoting lock arms, paintable grilles, and magnetic grille fasteners, you’ll have your DT6.5STR speakers installed and playing sweet audio in no time.

Pivoting Tweeters for customized sound

When using DT Series speakers as fronts in a home theatre setup or as stereo speakers in a distributed audio system, installers can aim the tweeter toward the main listening position for improved imaging and detail. When using as rear/surround speakers, installers can aim the tweeter toward an adjacent wall or ceiling for a more diffuse sound field.

Fewer Tools Needed for faster installs

Rotating lock arms, magnetically-attached grilles, and heavy-gauge speaker wire push terminals enable a faster, simpler installation using fewer tools.

Paintable Magnetic Grilles for the custom touch

All DT Series speaker grilles and grille frames are paintable, with easy step-by-step instructions. Once you have your perfect look, powerful neodymium magnets attach the grilles to the speakers for a secure, tool-free finish.

Affordable Customization for everyone

DT Series is the culmination of years of research and engineering to innovate an affordable in-wall/ in-ceiling speaker line that’s Definitive Technology to the core. Equally at home in distributed audio, home theatre, and commercial settings, DT Series speakers bring enthralling music, movies, gaming, and background audio to walls and ceilings — with ease and stealth.

DT Series Custom Install Speakers - Custom Without Compromise

Our goal was simple—an affordable custom in-wall/in-ceiling speaker line with all the Definitive Technology hallmarks: the advanced components; the innovative engineering; the legendary sound; the generous warranty. DT Series is that line.

Our most accessible line of high-performance in-wall and in-ceiling products, DT Series speakers regale listeners with thrilling sound. You’ll enjoy Definitive Technology’s vibrant bass, detailed midrange, and clear treble without taking up an inch of floor space.

More Information
Model Number DT6.5STR

Definitive Technology DT6.5STR

  • Drivers Warranty: 5 years
  • Carton 1: 9.6" (24.38 cm) h x 9.6" (24.38 cm) w x 5.7" (14.48 cm) d - 4 lbs (1.81 kg)
  • Driver Complement
    • (2) 0.75" (1.91 cm) d (Round) Pivoting Dome Tweeter - Tweeter
    • (1) 6.5" (16.51 cm) d (Round) - Mid/Woofer
  • Depth: 3.56" (9.04 cm)
  • Grille Dimensions: 8.31" (21.11 cm) diameter
  • Shape: Round
  • Dimensions: 7.25" (18.42 cm) diameter
  • Total Frequency Response: 27 Hz - 30,000 Hz
  • Nominal Impedance: 8 ohms
  • Max Sensitivity (1 watt @ 1 meter): 89 dB
  • A/V Receiver Crossover Settings: Small (60 Hz)
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3 Years
These Definitive Technology installation speakers include a 3 year Australian warranty.

If you experience any issues with this product please don't hesitate to contact us.
How much does delivery cost?
We offer free post on all orders over $29 to anywhere within the Australian mainland and Tasmania.

Can I pick up my purchase from your store?
Yes. You can usually pick up your order from one of our stores. We recommend that you contact us first to ensure your order is ready for collection.

What happens if I'm not happy with my product when it arrives?
All change of mind returns must be in as new condition, in original packaging. We provide a generous 30-day change-of-mind guarantee on our products (unless otherwise stated). All change of mind returns must be in as new condition, in original packaging.

Please visit our FAQ page for answers to other frequently asked questions or contact us if you have any other questions or comments.