All items tagged with low frequency (47)

Voice Coil Test Bench: New Celestion TSQ2145 21" Pro Sound Subwoofer

September 24, 2025 by Vance Dickason

Voice Coil Test Bench: New Celestion TSQ2145 21" Pro Sound Subwoofer

Celestion's TSQ2145 21" subwoofer is the latest example of a neodymium, low-frequency loudspeaker, from the 10 Squared line-up (TSQ for short) from the British company. The TSQ2145 is rated for 1800W AES (3600W continuous) power, and was designed to be integrated in large power multi-way sound reinforcement systems, or to be used as a dedicated subwoofer in bass reflex designs.

PSI Audio Introduces A326 D-REX Dynamic Range Extension for A226 Main Studio Monitors

July 16, 2025 by Alfred Moody

PSI Audio Introduces A326 D-REX Dynamic Range Extension for A226 Main Studio Monitors

PSI Audio introduces the A326 D-REX, a bass extension cabinet intended as a complement for the recently launched A226 MAIN monitor speakers. As the A226 MAIN studio monitors already reach all the way down to 20Hz, the A326 D-REX was designed not as a subwoofer but to act more as a Dynamic Range Extender, considerably enhancing the dynamic accuracy and transparency for the spectrum from 20Hz to 100Hz. The combination of A226 MAIN monitors and one or two A326 D-REX turns the listening into a lifelike experience.

Test Bench: Dayton Audio’s UMII10-22 Ultimax II 10” Subwoofer

May 14, 2025 by Vance Dickason

Test Bench: Dayton Audio’s UMII10-22 Ultimax II 10” Subwoofer

This Test Bench characterizes the Dayton Audio UMII10-22 Ultimax II 10" Subwoofer, a recent example of the upgraded, high-performance designs that succeeded the brand’s original Ultimax subwoofer line. Available for now in four diameters (18", 12", 10", and 8"), the common feature set for the new line includes a large aluminum shorting ring and aluminum pole sleeve for lower magnetic distortion, a lightweight and rigid woven carbon fiber cone assembly, high Xmax, with a frame and motor designed with extensive thermal venting, all optimized for compact sealed enclosures.

Celestion TSQ2145 and TSQ1845 Low-Frequency Pro Audio Drivers Now Available

February 25, 2025 by Alfred Moody

Celestion TSQ2145 and TSQ1845 Low-Frequency Pro Audio Drivers Now Available

Engineered for applications in subwoofers or as bass drivers in two- or three-way loudspeaker designs and large-format arrays for sound reinforcement, Celestion's Ten Squared (TSQ) Series launched in 2024 is now expanded with two large-sized woofers. Celestion announced the availability of both the 21" TSQ2145 and 18" TSQ1845 models of aluminum-chassis neodymium magnet low-frequency loudspeakers.

Speaker Builder: Open-Baffle Subwoofer Simulation with Akabak

December 11, 2024 by George Ntanavaras

Speaker Builder: Open-Baffle Subwoofer Simulation with Akabak

Confronted with the impossibility to conduct reliable measurements in the low-frequency domain for his DIY speaker project, George Ntanavaras explores the alternative of relying solely on simulation software. To validate the design of an open-baffle subwoofer using the AKABAK software, created by German company R&D Team, he also explores the transition from measurements to simulation. His experiments contrast the near-field response measurements of his loudspeaker with the accuracy of the simulation using AKABAK.

Simulation Techniques: Double Bass Arrays

November 21, 2024 by René Christensen

Simulation Techniques: Double Bass Arrays

Although the sound field in a room at low frequencies is one of the most discussed topics, approaches to dealing with room modes are typically treated as an optimization problem, and not correctly defined. This article explores a different strategy: the so-called Double Bass Array layout, using several subwoofers placed in a pattern, on the front and rear walls. Using advanced simulation techniques in order to understand what truly happens in the resulting room mode behavior, sound pressure levels, and resonances, this article builds upon existing research (Geddes, Welti, Devantier, et al.)

Celestion Launches the Ten Squared (Ten2) Low-Frequency Pro Audio Driver Series at ISE 2024

January 30, 2024 by audioXpress Staff

Celestion Launches the Ten Squared (Ten2) Low-Frequency Pro Audio Driver Series at ISE 2024

Celebrating the company’s 100th anniversary in 2024, Celestion introduced the new Ten Squared (Ten2) Series of pro audio low frequency drivers at ISE 2024 in Barcelona. Born out of a specialist development program at Celestion’s UK-based R&D facility the new Ten Squared Series comprises five drivers meticulously engineered for applications in subwoofers or as bass units in two- or three-way loudspeakers and larger format line arrays.

The AudioChiemgau ModeCompensator: A Quick Basic Test

November 15, 2023 by Rens Tellers

The AudioChiemgau ModeCompensator: A Quick Basic Test

The principles applied by Dr. Reinhold Lutz's for precise measurement of the sound pressure frequency response in the presence of room modes, are available in its AudioChiemgau Mode-Compensator solution. Jan Didden and Rens Tellers did a basic functional test to find out how well they could make it work and they were pleasantly surprised with the results. This article was originally published in audioXpress, October 2023.

Celestion Introduces FTR12-4080DL 4-Ohm Low Frequency Driver for Uncompromising Bass

July 26, 2023 by audioXpress Staff

Celestion Introduces FTR12-4080DL 4-Ohm Low Frequency Driver for Uncompromising Bass

Celestion introduced the FTR12-4080DL 12-inch, low frequency 4-ohm driver which is specifically designed for subwoofer applications, offering a compact and powerful alternative with a cast aluminum chassis and ferrite magnet. Well-established as an 8-ohm driver, this purpose-built subwoofer is now available in 4-ohm, making it ideal for applications that are hungry for every watt of amplifier power when delivering uncompromising bass.

SUBPAC and JLR Partner to Bring A New Dimension of Sound to Range Rover

May 31, 2023 by Joao Martins

SUBPAC and JLR Partner to Bring A New Dimension of Sound to Range Rover

High-fidelity tactile audio company, SUBPAC, teamed up with Jaguar Land-Rover (JLR) to improve the in-vehicle audio experience in the new Range Rover Sport SV Edition One system. The tactile experience was added to the Body and Soul Seat (BASS), which delivers audio vibrations allowing front-seat occupants to actually feel the music. According to the companies, this new approach to sound in-vehicle comes complete with wellness benefits, too, setting a new standard in immersive audio.

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