All items in category Voice Coil Test Bench
Test Bench: SEAS New High-End 5.25” Metamodal TPCD Midbass Woofer
by Vance Dickason

Test Bench: SEAS New High-End 5.25” Metamodal TPCD Midbass Woofer

This Test Bench explores the exciting SEAS W16NX005 5.25" Metamodal TPCD Midbass Woofer. Part of the SEAS high-end Excel line of transducers, the W16NX005 is the first commercial product available that combines the latest Composite Sound metamodal TPCD diaphragm technology with the typical SEAS high-performance Excel woofer motor design. This midbass woofer includes a metamodal diaphragm and 2" convex dustcap, along with an optimized NBR surround and black cloth flat profile spider for compliance.
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Test Bench: The UF 295 CBS Ultra-Thin 10” Subwoofer from Neotera
by Vance Dickason

Test Bench: The UF 295 CBS Ultra-Thin 10” Subwoofer from Neotera

Another exciting driver from Neotera, the UF 295 CBS is a new ultra-thin 10" subwoofer primarily intended for high-quality applications in home audio or automotive systems. The UF 295 CBS impresses immediately with its single piece black anodized concave cone assembly suspended by two large rubber surrounds, one on each side, not using a spider for compliance. The cone is driven at its perimeter by a large aluminum voice coil and a unique motor structure of 72 neodymium bar magnets, covered by no less than 10 international patents. This article was originally published in Voice Coil, April 2024.
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Test Bench: Stereo Integrity’s TM65 mkIV High-Performance 6.5” Woofer
by Vance Dickason

Test Bench: Stereo Integrity’s TM65 mkIV High-Performance 6.5” Woofer

This Test Bench addresses the Stereo Integrity TM65 mkIV High-Performance 6.5” woofer. Stereo Integrity is an interesting new company that is aiming at both home audio and automotive/mobility applications. Features for the unique TM65 mkIV include a black anodized aluminum cone and black anodized dust cap. Suspension is provided by a tall NBR surround plus a flat 105mm diameter Nomex spider with a linear roll configuration. Total depth of this driver with its proprietary frame and motor structure is a mere 58mm (2.28”).
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Test Bench: The SIG180-4 6.5” Woofer from Dayton Audio’s Signature Series
by Vance Dickason

Test Bench: The SIG180-4 6.5” Woofer from Dayton Audio’s Signature Series

Dayton Audio’s SIG180-4 is part of a woofer series with five cost-effective, high-performance models, ranging from 4” to 10”. All drivers include single-piece concave aluminum cones, polyimide vented voice coil formers, open cast-aluminum frames, plus indexed shallow transition NBR surrounds. Rated for 80W RMS power handling capacity, the SIG180-4 woofer features a FEA-optimized ferrite motor design and a 1.25” voice coil wound with round copper wire.
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Test Bench: Eighteen Sound’s 8NTLS2000 8" Pro Sound Woofer
by Vance Dickason

Test Bench: Eighteen Sound’s 8NTLS2000 8" Pro Sound Woofer

Eighteen Sound's latest 8NTLS2000 8" high-power handling woofer, designed for professional audio applications represents the latest Tetracoil technology from the brand. It maximizes benefits in terms of thermal dissipation and Bl symmetry, making the 8NTLS2000 ideal for small volume subwoofers, high-quality line arrays, and compact multi-way systems. The 8NTLS2000 benefits from its substantial cooling vents that allows air to move past the voice coil and across the front side of the neodymium motor assembly. This article was originally published in Voice Coil, February 2024.
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Test Bench: The Excel 29mm T29X001 Home Audio Tweeter from SEAS
by Vance Dickason

Test Bench: The Excel 29mm T29X001 Home Audio Tweeter from SEAS

The SEAS T29X001 tweeter, from the company's high-end Excel line of transducers, is a wide surround format type, like the original Vifa DX/XT tweeters, and combines the latest Composite Sound metamodal thin-ply carbon diaphragm (TPCD) technology with the seriously outstanding SEAS Excel radially charged Hexadym motor structure. This new tweeter makes the Norwegian manufacturer effectively the first company in the market to offer the latest metamodal TPCD diaphragm solution.
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Test Bench: The New LM10n Wide Band Midrange Ribbon Transducer from Radian Audio Engineering
by Vance Dickason

Test Bench: The New LM10n Wide Band Midrange Ribbon Transducer from Radian Audio Engineering

This is the eagerly awaited characterization of the new LM10n planar ribbon from Radian Audio, one of the most interesting drivers launched in 2023. Like all of Radian's latest planar transducers this one was designed by 35-year loudspeaker engineering veteran Igor Levitsky, with the LM10n being the latest and larger sized model, described as a wide range 120Hz to 20kHz ribbon planar transducer, which excels as a midrange and can be utilized in both open-back (dipole) and closed-back (monopole) formats.
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Test Bench: The New DE350-8 Ultra-Compact 1" Compression Driver from B&C Speakers
by Vance Dickason

Test Bench: The New DE350-8 Ultra-Compact 1" Compression Driver from B&C Speakers

This Test Bench characterizes an ultra-compact (under 60mm diameter) compression driver, along with the B&C Speakers ME10v2 90°x60° coverage horn. The really cool feature of the DE350-8 is the patent-pending phase plug. Inside, the DE350 has a round symmetrical outside channel, and an inside channel with a patent-pending twist for overall improved frequency response. Weighing in at a mere 275 gram, it is an ideal candidate for the new generation of lighter, more compact line array loudspeakers.
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Test Bench: The Purifi Audio PTT8.0X04-NAB-02 8” Aluminum Cone Woofer
by Vance Dickason

Test Bench: The Purifi Audio PTT8.0X04-NAB-02 8” Aluminum Cone Woofer

The PTT8.0X04-NAB-02 is the fifth Purifi woofer to be examined in Test Bench. The new 8" aluminum cone woofer includes the same constant Sd surround, cone edge stiffening ring, and low magnetic hysteresis motor design as previous models. The addition of the unique Purifi NBR surround, make the PTT8.0X04 like no other in the history of woofer development. The PTT8.0X04e is rated for 350W IEC268 long-term power handling, and a 9.3mm Xmax.
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Test Bench: The UF295FAS Thin-Profile Dipole 10" Woofer from Neotera
by Vance Dickason

Test Bench: The UF295FAS Thin-Profile Dipole 10" Woofer from Neotera

This new 10" thin-profile woofer comes from Neotera, a new company headquartered in Sweden, founded by a diverse group of loudspeaker/electronic design veterans. Maurizio Servadio is the engineer who invented the Neotera Ultraflat technology and is based in Italy where the UF295FAS is manufactured. This thin-profile woofer with a depth of 2.6" and with a low-frequency response down to 29Hz, is specifically designed for dipole system applications. This article was originally published in Voice Coil, November 2023.
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