Definitive Technology Demand D11 – compact bookshelf loudspeakers with a bunch of innovations
17.01.2025 09:36 | ~1 minute read
The Definitive Technology Demand D11 bookshelf loudspeakers use a dual suspension system of the BDSS mid/low-frequency driver, in which the 165 mm polypropylene diffuser is attached to the basket not only along the outer edge. In this case, the second suspension in the center of the system connects the inner edge of the diffuser with the core, which contains a proprietary waveguide - this design significantly improves the linearity of the diffuser movement. Another important innovation is the Linear Response waveguide, which, according to the manufacturer, expands the directivity pattern and improves the consistency of the frequency response in the operating range of the acoustic system.
Particular attention was paid to ensuring an accurate phase response when constructing Definitive Technology Demand D11 acoustic systems. The 25 mm tweeter includes an acoustic lens, known as a 20/20 Wave Alignment Lens, which improves the uniformity of sound dispersion. The tweeter dome is made of aluminum and is positioned at an angle of 5 degrees from the central axis, effectively minimizing unwanted symmetrical diffraction at the edges of the speaker's front panel. This solution improves the focus of sound images and the stage's echeloning.
The Definitive Technology Demand D11 acoustic systems are equipped with a passive bass radiator, which further improves bass response. The icing on the cake is the grilles with magnetic fastening and two pairs of terminals for bi-wiring.
Specifications
This product is in the Hi-Fi and High End Electronics and Acoustics database
Bookshelf Speakers — Definitive Technology Demand D11
Model name
Demand D11
Frequency Response low +/- 3dB (Hz)
61
Frequency Response high +/- 3dB (Hz)
24000
Sensitivity (dB at 1 W/1m)
90
Impedance (Ohms)
8
Power amplifier requirements (W)
20 -200
Has internal amplification
N/A
Internal amplification power (W)
N/A
Size (sm)
33.02 x 18.42 x 31.75
Weight (kg)
7.7
Official link
Image source - (c) Definitive Technology
More content
Treehaus Audiolab LCR Phono – a Vacuum Tube Phonostage with Passive Equalization
Treehaus Audiolab has announced the Treehaus Audiolab LCR Phono reference vacuum tube phono preamplifier. To equalize the signal, the device uses only passive components: inductors (L), capacitors (C) and resistors (R).
Rotel DX-5 – a Tiny Amplifier Operating in Class A/B
Rotel DX-5 is a compact model, but despite its dimensions, the device does not use digital amplification and operates in class A/B, reaching 2 x 33 W into 4 Ohm load and 2 x 25 W into 8 Ohm speakers. The new product is equipped with a power supply based on a powerful toroidal transformer created by Rotel itself, and high-current transistors.
TOTALDAC d1-total – a Fully “Packed” DAC and Streamer
The Totaldac d1-total digital-to-analog converter has been introduced – according to the company, this device guarantees the maximum possible for a single-block design with external PSU. “Under the hood”, in addition to the d1-triunity DAC converter, there is also volume control, a network streamer (latest version developed for the d1-streamer-live), 40 femtoseconds oscillators, a microfilter USB loop (developed for the d1-streamer-live) and anti-vibration supports.
Audio-Technica Hotaru – a Firefly Turntable
Japanese company Audio-Technica has announced the imminent opening of pre-orders for a limited edition of the innovative Audio-Technica Hotaru turntable (since May 30, 2025). The model will go on sale in October of this year at a price of $ 9,990 US - only 1000 turntables will be made.
PS Audio Introduced The Paul McGowan Signature Series
PS Audio has released a line of new components - The Paul McGowan Signature Series, which includes a preamp, DAC, disk transport and phonostage. All components feature innovative circuitry and offer impressive performance.
