All items tagged with Test Bench (301)

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.

Test Bench: The 27TFC/T 1" Soft Dome Tweeter from the SEAS Prestige Titan Line

September 17, 2025 by Vance Dickason

Test Bench: The 27TFC/T 1" Soft Dome Tweeter from the SEAS Prestige Titan Line

The 27TFC/T is a new 1" (25mm) tweeter featuring a one-piece centenary profile dome and wide surround fabricated from SEAS pre-coated lightweight Sonolex material, both integrated into an injection molded faceplate. The voice coil consists of a non-magnetically conducting titanium former wound with round copper wire. Driving the removable dome assembly is a ferrite magnet with a damped vented pole piece that is coupled to an injection molded rear cavity. This article was originally published in Voice Coil, May 2025.

Test Bench: The New TW 104.28 N/Ag 1.1" Soft Dome Tweeter from RS Speakers

September 9, 2025 by Vance Dickason

Test Bench: The New TW 104.28 N/Ag 1.1" Soft Dome Tweeter from RS Speakers

RS Speakers is a new Italian brand recently introduced by SICA Altoparlanti, to enter the high-end home transducer market. The driver on this Test Bench is a 28mm soft dome tweeter that features a treated silk dome directly bonded to the voice coil, with a wide roll surround and an unusual wire screen to keep the damping in place beneath the dome.

Test Bench: The D2908/716000 TPCD Metamodal 1” Dome Tweeter from Scan-Speak's Revelator Line

July 16, 2025 by Vance Dickason

Test Bench: The D2908/716000 TPCD Metamodal 1” Dome Tweeter from Scan-Speak's Revelator Line

Scan-Speak has been working with Composite Sound to develop a generation of metamodal thin-ply carbon diaphragms (TPCDs), engineered to fully replace the almost impossible-to-source and extremely expensive beryllium domes. The Scan-Speak D2908/716000 1” Revelator TPCD tweeter, which replaced the Revelator D2908/714000, now includes a new 1" TPCD metamodal diaphragm, combined with the patented Scan-Speak Symmetrical Drive SD-2 neodymium motor structure.

Test Bench: The New Beyma CD-314Nd/TI Compression Driver and Horn

July 9, 2025 by Vance Dickason

Test Bench: The New Beyma CD-314Nd/TI Compression Driver and Horn

Acustica Beyma continues to expand its range of products from solid foundations in professional audio, now also to emerging installation and even high-fidelity applications, while implementing a solid environmental stance. This 1.4" throat, high-power-handling compression driver, characterized with the new Beyma 60° × 40° TD-1464P horn, is targeted for mid- to large-venue PA systems and is one example of those efforts.

Test Bench: GAIT BGD-D72-64-4-0A1 Glass Diaphragm 1" Dome Tweeter

July 2, 2025 by Vance Dickason

Test Bench: GAIT BGD-D72-64-4-0A1 Glass Diaphragm 1" Dome Tweeter

Glass Acoustic Innovations Technologies (GAIT) is a company from Taiwan and a renowned specialist in Ultra-Thin Glass (UTG) diaphragm technology, quickly gaining recognition in hifi and high-end audio circles. This 1" dome super tweeter uses a unique glass diaphragm formed using a chemical strengthening process, and includes a 1” voice coil and neodymium magnet motor, assembled with an injection-molded plastic faceplate, a phase plug, and a damped rear chamber.

Test Bench: Dayton Audio’s Ultimax II 8-22 8” Subwoofer

June 24, 2025 by Vance Dickason

Test Bench: Dayton Audio’s Ultimax II 8-22 8” Subwoofer

This powerful Dayton Audio Ultimax II 8-22 8" subwoofer from the company's recently upgraded series maintains many common features with the original Ultimax drivers. After having examined the Ultimax II 10" version in January 2025, this Test Bench looks at the new 8" version where the very stiff and thick carbon fiber cone stands out with the NBR surround, assisted by the two flat 6" diameter cloth spiders.

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.

Test Bench: Scan-Speak’s D3004/666000 Metamodal TPCD Dome AirCirc Motor Tweeter

May 7, 2025 by Vance Dickason

Test Bench: Scan-Speak’s D3004/666000 Metamodal TPCD Dome AirCirc Motor Tweeter

Vance Dickason has spent some time characterizing the new Scan-Speak D3004/666000 tweeter, the first to combine a metamodal Thin-ply Carbon Diaphragm (TPCD) dome with the company's AirCirc motor. This new Scan-Speak tweeter is not a common "evolutionary" design but a joint manufacturing project with Swedish company Composite Sound to develop new second-generation TPCD diaphragms with the characteristics and able to rival the performance levels of a beryllium dome.

Test Bench: SB Acoustics Satori MR16TX-8 TPCD 6.5" Midrange

April 16, 2025 by Vance Dickason

Test Bench: SB Acoustics Satori MR16TX-8 TPCD 6.5" Midrange

The 6.5" MR16TX-8 TPCD Midrange from SB Acoustics' prestige Satori line targets hifi and high-end audio applications, and expands the company's already significant investment in TPCD Textreme diaphragms. The cone assembly consists of a curvilinear inverted single piece, "bowl" shaped TPCD cone, glued to an inverted NBR surround, with the remaining compliance coming from a flat BIMAX spider. The motor is an FEA-optimized neodymium magnet and a 1.4" voice coil with a nonconducting fiberglass former.

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