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Definitive Technology Dymension DM20 Review
Definitive Technology Dymension DM20

Main Features

  • 1" Hard-Dome Tweeter
  • 4 x 4.5" Polypropelene Woofer
  • 91-23 kHz Frequency Response
  • 89 dB Sensitivity
  • Impedance: 4ohms
  • Power Range: 50-200watts
  • Weight:22.00 lbs / 10.00 kg
  • Dimensions(HxWxD): 5.3"x30.5"x6.5" / 134 x 775 x 166 mm
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Definitive Dymension DM20 Review
Definitive Dymension DM20 Definitive Dymension...
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Definitive Technology Dymension DM20 is a 2-way Passive Acoustic Suspension Center Channel speaker by Definitive Technology. Center channel speaker is an important component of a home theater system set-up as it delivers the listener significant part of the on-screen dialogue from your television. It features a 1" Hard-Dome Tweeter and 4 x 4.5" Polypropelene Woofer. The speaker has a frequency range of 91-23 kHz and a sensitivity of 89 dB. Definitive Dymension DM20 has an MSRP of 799$.

Room Size Suitability

The size of the room where you plan to use the Definitive Dymension DM20 is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:

Listening Environment* Suitability
Near-fieldPoor
Small RoomAverage
Mid-size RoomGood
Large RoomAverage
Very Large RoomPoor

(* Approximate Room sizes: Small < 100sq. ft / 9 m2, Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: > 400 sq. ft / 36 m2. Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual listening experience changes depending on floor height, room shape, surface materials, listening position, speaker locations, etc.)

Definitive Dymension DM20 Speaker Structure
Definitive Dymension DM20 Speaker Structure

Definitive Dymension DM20  Lifestyle
Definitive Dymension DM20 Lifestyle

Definitive Technology's Dymension Series of Loudspeakers

Dymension DM20 is a member of Definitive Technology's Dymension series of Passive speakers. Below you can see the main specs of these speakers.

Definitive Technology Dymension Series Speakers
Model Frequency SensitivityImpedance Woofer
Definitive Dymension DM30
Compare
41-23k Hz 93 dB4Ω 1 x 8"
Definitive Dymension DM80
Compare
28-23k Hz 90 dB4Ω 1 x 12"
Definitive Dymension DM20
91-23k Hz 89 dB4Ω 4 x 4.5"
Definitive Dymension DM40
Compare
55-23k Hz 87 dB4Ω 4 x 4.5"
Definitive Dymension DM10
Compare
81-23k Hz 90 dB4Ω 2 x 5.25"
Definitive Dymension DM60
Compare
34-23k Hz 88 dB4Ω 1 x 8"
Definitive Dymension DM70
Compare
30-23k Hz 90 dB4Ω 1 x 10"
Definitive Technology Dymension Series Speakers
Definitive Technology Dymension Series Speakers


**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Frequency Response of the Definitive Dymension DM20 Speaker

Definitive Dymension DM20 has a Frequency response range of 91-23 kHz at ±3dB and Power Range of 50-200 watts. Here we have a comparison of how Dymension DM20's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.

Low Frequency
Center Channel Speakers
Definitive Dymension DM20
Min
Average
Max
High Frequency
Center Channel Speakers
Definitive Dymension DM20
Min
Average
Max

Impedance and Sensitivity

Definitive Dymension DM20's nominal impedance level is 4 ohms and has a sensitivity of 89 dB.

Sensitivity
Center Channel Speakers
Definitive Dymension DM20
Min
Average
Max

Nominal Impedance of the 4 Ohms means that the Definitive Technology Dymension DM20 is a difficult to drive speaker from nominal Impedance perspective, make sure that you choose an amplifier than can provide 4 Ohms for this speaker.
Many AVRs (audio/video receiver) in the market may have difficulty when the speakers dip below the 4 Ohms levels (this may cause clipping or even physical damage), so we recommend to not pair the Definitive Technology Dymension DM20 with an AVR but use an Integrated Amplifier instead.

Sensitivity

89dB of the Definitive Technology Dymension DM20 is an average sensitivity for stereo speaker so it is neither easy nor difficult to drive Sensitivity wise.

Check the amplifiers that are in a similar price range to the Definitive Dymension DM20:

  • Integrated Amps under 750 USD
  • Integrated Amps under 1000 USD
  • Integrated Amps under 1500 USD
  • All Integrated Amplifiers

Input Type

Dymension DM20 features Binding post type connectors. Bi-amping and Bi-wiring are not possible.
Definitive Dymension DM20 Back View
Definitive Dymension DM20 Back View

Definitive Dymension DM20 External Dimensions and Weight

Definitive Dymension DM20 has external dimensions of (Height x Width x Depth) 5.3 x 30.5 x 6.5 in (134 x 775 x 166 mm ).

Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited. The base area of Definitive Dymension DM20 is approximately 1286.5cm2 / 199.4inch2.

Weight

The Definitive Dymension DM20 weighs 10.00kg / 22lbs per piece. Here is a comparison of how Dymension DM20's weight compares with the average, max and min weights in its class.

Weight
All Center Channel Speakers
Definitive Dymension DM20
Min
Average
Max
Weight
Center Channel Speakers under $1000
Definitive Dymension DM20
Min
Average
Max

How does the Definitive Dymension DM20 compare to the Definitive Technology Dymension DM30?

One of the natural alternative to the Definitive Dymension DM20 is the Dymension DM30 which is located one step higher in Definitive Technology's Passive Center Channel selection.

Check the Detailed Comparison of Definitive Dymension DM20 vs Dymension DM30 for more details.

Cabinet type and Materials

Definitive Dymension DM20 has a Acoustic Suspension type cabinet. Acoustic Suspension loudspeakers aka Sealed speakers have no openings such as ports or slots.. They can be designed smaller, the bass is more accurate and tighter compared to ported designs but doesn't go as low on the lower end in general.

Definitive Dymension DM20  - Side View
Definitive Dymension DM20 - Side View

Available colors

Definitive Dymension DM20 is available in Black.

Does the Definitive Dymension DM20 come with a Grille?

Dymension DM20 comes with fixed grilles. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible.

Recommended Accessories

Here is a list of accessories that we think you may need for the Definitive Technology Dymension DM20.

  • Speaker Cable and Connectors
    • Speaker Cables with Banana Plugs: If you know the lenght of the cable you need, this is the easier option to connect your speakers with your amp.
    • Speaker Cables without Connectors: If you are not sure about the lenght or need longer than standard cables with plugs, choose this option.
    • Banana Connectors and Plugs: If you chose the cables without connectors option or already have some cable around, pick the banana plugs separately.
  • Vibration Isolators: IsoAcoustics isolators more affordable options too.
  • Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.

Official Product Page

Official manufacturer's product page for the Definitive Technology Dymension DM20 speaker can be found below:
Official Product Page for Definitive Dymension DM20

Warranty

5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.

Definitive Technology Dymension DM20 Alternatives in Passive Center Channel Speakers
Model Type Sensitivity Impedance Frequency
Definitive Dymension DM30
Compare
3-way 93 dB 4 ohms 41-23 kHz
Definitive Dymension DM10
Compare
2-way 90 dB 4 ohms 81-23 kHz
Definitive Dymension DM40
Compare
2-way 87 dB 4 ohms 55-23 kHz
Definitive Dymension DM60
Compare
3-way 88 dB 4 ohms 34-23 kHz
Polk R400
Compare
2-way 89 dB 8 ohms 48-39K Hz
Klipsch RP-404C II
Compare
2-way 94 dB 8 ohms 87-25k Hz
Definitive Dymension DM70
Compare
3-way 90 dB 4 ohms 30-23 kHz
Definitive Dymension DM80
Compare
3-way 90 dB 4 ohms 28-23 kHz
Frequently Asked Questions about Definitive Technology Dymension DM20
What is the External Dimensions of Definitive Technology Dymension DM20
What is the Speaker Sensitivity of Definitive Technology Dymension DM20
is the Definitive Technology Dymension DM20 an easy to drive speaker?

Definitive Dymension DM20 Detailed Specifications

General
BrandDefinitive Technology
Full Model NameDefinitive Technology Dymension DM20
Speaker Type2-way Center Channel
Power Range50-200 watts
Sensitivity89 dB
Impedance4 ohms
Frequency Response91-23 kHz
DRIVERS
Woofer Size4.5-inch
Woofer CompositionPolypropelene
Woofer SurroundRubber
Tweeter Size1-inch
Tweeter TypeHard-Dome

CONNECTIONS
Connector TypeBinding post
Biamp InputsNo
PHYSICAL SPECS
Height134.0mm ( 5.3-inch)
Width775.0mm ( 30.5-inch)
Depth166.0mm ( 6.5-inch)
Height134.0mm ( 5.3-inch)
Weight10.00kg ( 22.00 lbs)
EnclosureAcoustic Suspension
Available ColorsBlack
Mounting BracketYes
GrilleYes
Moisture ResistanceNo
OTHER
Handheld RemoteNo
Parts Warranty5 Years
Labor Warranty5 Years
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