All items in category Voice Coil Test Bench
Voice Coil Test Bench: New Celestion TSQ2145 21" Pro Sound Subwoofer
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.
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Test Bench: The 27TFC/T 1" Soft Dome Tweeter from the SEAS Prestige Titan Line
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.
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Test Bench: The New TW 104.28 N/Ag 1.1" Soft Dome Tweeter from RS Speakers
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.
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Test Bench: Wavecor TW030TU03 30mm Graphene-Coated Soft Dome Tweeter
by Vance Dickason

Test Bench: Wavecor TW030TU03 30mm Graphene-Coated Soft Dome Tweeter

This latest Wavecor soft dome tweeter is specifically intended for car audio applications. Like other models, the new 4Ω TW030TU03 includes a 30mm wide surround with a precision-coated graphene-reinforced cloth diaphragm optimized for high-frequency cutoff above 20kHz. The design also features internal chambers below the dome and surround edge, dual neodymium magnets vented into a damped rear chamber, copper-clad aluminum voice coil winding with a vented voice coil former, and flexible lead wires.
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Test Bench: The D2908/716000 TPCD Metamodal 1” Dome Tweeter from Scan-Speak's Revelator Line
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.
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Test Bench: The New Beyma CD-314Nd/TI Compression Driver and Horn
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.
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Test Bench: GAIT BGD-D72-64-4-0A1 Glass Diaphragm 1" Dome Tweeter
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.
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Test Bench: Dayton Audio’s Ultimax II 8-22 8” Subwoofer
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.
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Test Bench: Faital Pro’s 5PR120 - 5” Pro Midrange Driver
by Vance Dickason

Test Bench: Faital Pro’s 5PR120 - 5” Pro Midrange Driver

The Faital Pro 5PR120 is a high sensitivity and high-power handling 5” midrange driver, built on a proprietary six-spoke cast-aluminum frame, with four vents below the spider mounting shelf, and additional cooling provided by a pole vent. It features a curvilinear inverted single piece “bowl” shaped paper cone and black anodized aluminum dust cap. The motor is a FEA-optimized neodymium ring, and driving the cone is a 32mm voice coil wound with round copper wire on a non-conducting Kapton former.
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Test Bench: Dayton Audio’s UMII10-22 Ultimax II 10” Subwoofer
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.
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