Definitive Technology Demand D15 is a 3-way Passive Radiator Floor-standing speaker by Definitive Technology. It was released in 2020. It features a 1" dome Tweeter, 1 x 5.25" Midrange and 2 x 5.25" Carbon-fiber Woofer. Demand D15 also employs 2 x 10-inch passive radiators. The speaker has a frequency range of 48-22k Hz and a sensitivity of 85.5 dB. Definitive Demand D15 has an MSRP of 2798$ per pair but can often be found around 2126$ per pair.
Room Size Suitability
The size of the room where you plan to use the Definitive Demand D15 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-field | Bad |
| Small Room | Poor |
| Mid-size Room | Average |
| Large Room | Good |
| Very Large Room | Average |
(* 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 Technology's Demand Series of Loudspeakers
Demand D15 is a member of Definitive Technology's Demand series of Passive speakers. The Demand range is Definitive Technology's premium bookshelf line, with an offset tweeter for a wider soundstage. Below you can see the main specs of these speakers.
See all 6 Definitive Technology Demand models compared »
Definitive Technology Demand Series Speakers
Frequency Response of the Definitive Demand D15 Speaker
Definitive Demand D15 has a Frequency response range of 48-22k Hz and Power Range of 30-300 watts. With a minimum frequency of 48 Hz, Demand D15 delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.
Here we have a comparison of how Demand D15's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Floor-standing Speakers
Thinking about a subwoofer for the Definitive Demand D15?
Definitive Demand D15's Carbon-fiber Woofer
Among the speakers in our database with a max MSRP price of 3000$ (Pair), these are the 5 Passive Floor-standing speakers that have the deeper bass levels than the Definitive Demand D15's 48Hz:
Definitive Demand D15's aluminum dome Tweeter
Impedance and Sensitivity
Definitive Demand D15's nominal impedance level is
8 ohms and has a sensitivity of
85.5 dB.
Sensitivity
Floor-standing Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Definitive Technology Demand D15 is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
With a sensitivity level of only 86 dB, Definitive Technology Demand D15 is a difficult to drive speaker from Sensitivity perspective, make sure to choose an amplifier with a high output if you like listening to your music at high volume levels. You may especially have a hard time using Tube amplifiers which are traditionally very low power compared to Class A/B or Class D amps. Work out how loud the Definitive Demand D15 plays in your room →
What amplifier does the Definitive Demand D15 need?
At normal listening levels in a medium room, about
19–300 W
per channel into 8 ohms.
Set your own conditions and we will rank every amplifier we cover.
Prefer to browse? Integrated amplifiers under $3,000, or every amplifier we cover.
Input Type
Demand D15 has 5-Way post type connectors and lets bi-amping/bi-wiring. Bi-wiring can enhance the overall transparency of your loudspeakers by using separate speaker wires for the low and high-frequency drivers from a single amplifier. Bi-amping, on the other hand, involves using separate amplifiers for the high and low-frequency drivers, potentially resulting in a greater dynamic range and reduced distortion.
Work out what gauge speaker cable this run needs →
Definitive Demand D15's 5-Way post terminals allows Bi-amping or bi-wiring
Definitive Demand D15 External Dimensions and Weight
Definitive Demand D15 has external dimensions of (Height x Width x Depth) 40-1/4 x 9-1/16 x 12-3/4inch (1023.0 x 231.0 x 324.0mm ).
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 Demand D15 is approximately 748.4cm2 / 116.0inch2.
To get a better perspective on the real life size of Definitive Demand D15, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).
Definitive Demand D15 Speaker Size Compared to a Compact Disc
Here we place the Definitive Demand D15 virtually next to a standard width amplifier and turntable on a media center to get a better idea about the size.
Definitive Demand D15 Floor-standing Speaker next to a Media Stand
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe Definitive Demand D15 weighs 23.60kg / 51.9lbs per piece. Here is a comparison of how Demand D15's weight compares with the average, max and min weights in its class.
Weight
All Floor-standing Speakers
Weight
Floor-standing Speakers under $3000
Cabinet type and Materials
Definitive Demand D15 has a
Passive Radiator type cabinet and a MDF/Aluminum finish.
Speaker Feet
Definitive Demand D15 comes with the parts below which you can use to secure your loudspeaker on the surface that you are putting on:
- 2 Bases
- 8 Spike feet
- 8 Floor-glides
It is always recommended to use some kind of feet under all types of speakers. Besides limiting the movement of the speakers, it also compensates for non-flat surfaces and limits the contact surface area of the speaker. Rubber based feet also help isolating the vibrations within certain frequency ranges.
Definitive Demand D15 Feet
Available colors
Definitive Demand D15 is available in Gloss Black.
Does the Definitive Demand D15 come with a Grille?
Demand D15 comes with magnetic 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. Since the included grille of the Demand D15 is magnetic type, it is very easy to put it on and off.
Definitive Demand D15 with Grille
What's in the Box of Definitive Demand D15?
Here are the items that are included inside the box of Demand D15:
- Left floorstanding loudspeaker
- Right floorstanding loudspeaker
- 2 Grilles
- 4 Jumper-straps (pre-installed)
- 2 Bases
- 8 Spike feet
- 8 Floor-glides
- 8 Lock-rings
- 8 Screws
- Cleaning cloth
- Owners Manual
Recommended Accessories
Here is a list of accessories that we think you may need for the Definitive Technology Demand D15.
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.