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Definitive Technology Dymension DM20 Slim center channel speaker

Item # 735DM20

This speaker's low-profile design allows it to fit more easily in your audio/video cabinet or underneath your TV.

This speaker's low-profile design allows it to fit more easily in your audio/video cabinet or underneath your TV.

Item # 735DM20

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Every order includes

  • Free lifetime tech support
  • 60-day price-drop protection
  • 60-day returns
On backorder
Expected: 8/31/2025
$599.00 each

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About the Definitive Technology Dymension DM20

James Ralston

Product highlights:

  • low-profile design allows easier placement in your A/V cabinet or under your TV
  • integrated brackets on the back for wall-mounting
  • cloth grille-wrapped enclosure
  • 1" aluminum oxide dome tweeter with Teteron (cloth) suspension for smooth, extended highs
  • four 4" mid/bass drivers
  • sealed (acoustic suspension) cabinet
Specs:
  • frequency response: 91-23,000 Hz (-3dB)
  • recommended amplifier power: 50-200 watts
  • sensitivity: 89 dB
  • impedance: 4 ohms
Other info:
  • binding post connectors
  • dimensions (measured by Crutchfield): 30-1/2"W x 5-1/4"H x 6-3/4"D
  • 22 lbs.
  • warranty: 5 years
  • MFR # 300565-01-00-005
  • Item # 735DM20

Separate A/V receiver required. Shop receivers

What's in the box:

Definitive Technology Dymension DM20 owner's manual

If you need assistance accessing this owner's manual, please give us a call.
  • Center-channel loudspeaker
  • 4 Self-adhesive pads
  • Wall-Mount Template
  • Quick Start Guide
  • Important Product Information
  • Online Registration Card

More details on the Definitive Technology Dymension DM20

Stacey B.

Features & specs

Cabinet & design
Enclosure Sealed
Color Black
Wall-mountable Yes
Bracket included Fixed bracket
Connector Type 5-Way post
Driver details
Tweeter type Hard-Dome
Tweeter size (inches) 1
Midrange size (inches) N/A
Number of woofers 4
Woofer size (inches) 4
Audio specs
Power range 50-200
Sensitivity 89 dB
Impedance (ohms) 4
Frequency response 91-23k Hz
Dimensions & other info
Height (inches) 5-1/4
Width (inches) 30-1/2
Depth (inches) 6-3/4
Weight 22 lbs
Parts warranty 5 Years
Labor warranty 5 Years

Product Research

Features

2-Way Driver Design: The Definitive Technology Dymension DM20 center-channel speaker employs a 2-way driver design that features a 1" aluminum oxide dome tweeter and four 4" composite polymer cone woofers to provide full-range sound with superior vocal clarity.

  • 1" Aluminum Oxide Dome Tweeter: The 1" aluminum oxide dome tweeter delivers crisp detail for unrivaled nuance and speech clarity. The rigid, well-damped tweeter provides smooth extended response with crisp transients, exceptional definition, and pinpoint-precise imaging, for incredible clarity and lifelike realism.
  • Quad 4" Composite Polymer Cone Woofers: There are four 4" long-throw composite polymer cone mid-woofers that provide a lifelike, natural midrange with pronounced center channel impact. The mid-woofers feature a composite polymer cone that produce superior midrange detail, while the long-throw surrounds optimize driver excursion for improved low-end midbass performance.

Resonance-Free MDF Cabinet: The DM20 center-channel loudspeaker's enclosure is constructed from MDF and is wrapped in an acoustically transparent black grille cloth (the grille is not removable). The speaker cabinet is an acoustic suspension (sealed) designed for tight and accurate midbass performance with low distortion. The MDF cabinet features strategically placed bracing to improve imaging while reducing resonance, further reinforcing the speaker's clean and powerful sound.

5-Way Binding Posts: The Dymension DM20 center-channel speaker is outfitted with a set of 5-way binding post terminals to connect bare speaker wire (up to 10AWG), pin-connectors, spade-lugs, and banana plugs (single or dual).

Note: In order to use banana plugs, you must remove the rubber caps that are pre-installed in the binding posts.

Mounting & Placement Options: The DM20's main application use is as a center-channel loudspeaker in a home theater setup, but can also be used as front speakers in a home theater or 2ch stereo setup, as well as rear speakers in a home theater application. As a center-channel speaker, the DM20 can be horizontally positioned on a on a shelf or horizontally wall-mounted using its two integrated key-hole slots (mounting screws not included). As a front or rear speaker, the DM20 can be wall-mounted vertically using its two integrated key-hole slots (mounting screws not included); or simply positioned vertically on a stand, shelf, tabletop or other flat mounting surface.

  • Center Channel Application: As a center speaker, the DM20 should be centered above or below your TV. If the speaker is placed on furniture, keep the speaker flush with the front edge of the mounting surface. If possible, angle the speaker toward the listening area when the speaker is too far above or below your TV. The DM20 measures 30.5" (w) x 5.25" (h) x 6.75" (d) in a horizontal orientation as a center-channel speaker.
  • Front Channel Application: As front speakers in a home theater system or in a 2ch stereo setup, a pair of DM20s should form an equilateral triangle with your main seated listening position, so the distance from each speaker and the distance from each speaker and the main listening position are the same. The tweeter of the DM20 should be approximately at ear level when in your main seated listening position. The DM20 measures 5.25" (w) x 30.5" (h) x 6.75" (d) in a vertical orientation as a front channel speaker.
  • Rear Channel Application: As rear speakers in a home theater system, a pair of DM20s can be positioned directly to the side of or directly behind your main seated listening position. The tweeter of the DM20 should be approximately at ear level when your main seated listening position. The DM20 measures 5.25" (w) x 30.5" (h) x 6.75" (d) in a vertical orientation as a rear channel speaker.

Note: Four self-adhesive rubber feet are included for tabletop mounting; the feet add approximately 0.125" to the overall height of the speaker.

Dymension Series: The Dymension Series leverages Definitive Technology's most advanced acoustic technologies to deliver exceptionally lifelike, immersive home cinema sound. The Dymension Series by Definitive Technology sounds great in home theater, music, and gaming application. the The Dymension Series consists of four floorstanding loudspeakers, (DM80/DM70/DM60/DM40), three center-channel speakers (DM30/DM20/DM10), one surround loudspeaker (DM95), and a height module speaker (DM90).

Optional Powered Subwoofer: Add one of Definitive Technology's powered subwoofers (sold separately) for bigger, deeper, and more dynamic bass response.

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