All items tagged with Test Bench (279)
Tang Band Speaker 25-2234SD High-Resolution 1-Inch Aluminum and Magnesium Dome Tweeter
August 29, 2018 by Vance Dickason

Tang Band Speaker 25-2234SD High-Resolution 1-Inch Aluminum and Magnesium Dome Tweeter

In this edition of Test Bench I characterized a transducer from Tang Band (TB) Speaker, the 25-2234SD, a new 1” high-resolution dome tweeter with response to 40 kHz. The 25-2234SD is a compact tweeter that features a 1” aluminum/magnesium inverted dome, a neodymium motor structure, an injection-molded faceplate, a protective grill, and a rear cavity with magnetic fluid in the motor gap for cooling. This article was originally published in Voice Coil, June 2018.
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Test Bench: The T34A-4 Tweeter from BlieSMA
August 21, 2018 by Vance Dickason

Test Bench: The T34A-4 Tweeter from BlieSMA

BlieSMa was founded January 16, 2018, by Stas Malikov. The first product being released by BlieSMa is a 34 mm tweeter, the T34A-4. Available from May 2018, the T34A-4 is a 30 mm metal aluminum/magnesium alloy dome tweeter with a substantial feature set that includes extremely low moving mass, and a fully saturated neodymium motor with copper sleeve shorting ring. Particularly impressive is the T34A-4's extremely wide frequency range, going from 1.3 kHz to 35 kHz. This article was originally published in Voice Coil, June 2018.
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Test Bench: B&C Speakers DE360-8 1” Exit Pro Sound Compression Driver
August 8, 2018 by Vance Dickason

Test Bench: B&C Speakers DE360-8 1” Exit Pro Sound Compression Driver

In this edition of Tea Bench, Vance Dickason characterizes another compression driver from Italian OEM manufacturer B&C Speakers. The DE360-8 is the latest addition to the company's extensive 18 model ferrite and neodymium motor 1” exit compression driver range. B&C Speakers supplied the ME20 horn for use with the DE360-8, which has a 90° × 60° coverage pattern. This article was originally published in Voice Coil, May 2018.
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Test Bench: Celestion CDX1-1742 1” Exit Pro Sound Compression Driver
July 31, 2018 by Vance Dickason

Test Bench: Celestion CDX1-1742 1” Exit Pro Sound Compression Driver

For this month's Test Bench, Vance Dickason characterizes the CDX1-1742 from legendary UK Pro Sound OEM manufacturer Celestion. This driver joins the CDX family of ferrite motor compression drivers, and is designed for use with 1” throat horns, featuring a FEA-optimized ferrite magnet motor structure, and a proprietary next-generation “Sound Castle” soft diaphragm clamping assembly that reduces diaphragm mechanical stress and distortion. For this Test Bench, Celestion supplied the H1-9040P horn, with a 90° × 40° coverage pattern. This article was originally published in Voice Coil, May 2018.
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Test Bench: Scan-Speak Ellipticor 18WE/4542T00 Midbass Woofer
July 18, 2018 by Vance Dickason

Test Bench: Scan-Speak Ellipticor 18WE/4542T00 Midbass Woofer

Following the first test on the new Scan-Speak Ellipticor series, with the D3404/552000 tweeter, this edition of Test Bench focuses on the Scan-Speak Ellipticor 18WE/4542T00 midbass woofer. Like the D3404, the 18WE/4542T00 is a seriously feature rich transducer, which has a magnetically attached aluminum trim ring that can obviously be anodized a variety of colors besides black. For the cone assembly, Scan-Speak chose a rather stiff curvilinear profile back coated paper cone with an elliptical 45 mm × 35 mm convex paper dustcap. This article was originally published in Voice Coil, April 2018.
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Test Bench: The New Ellipticor D3404/552000 Tweeter from Scan-Speak
July 10, 2018 by Vance Dickason

Test Bench: The New Ellipticor D3404/552000 Tweeter from Scan-Speak

This edition of Test Bench focuses on the Scan-Speak Ellipticor D3404/552000 dome neodymium motor tweeter. Overall, the D3404/552000 is like a big elongated 28 mm diameter tweeter. For a motor system, Scan-Speak basically scaled up their currently successful Air-Circ tweeter motor with 10 neodymium slugs and copper shorting rings and a titanium former. The big news is that this motor and diaphragm yield a 2.83 V/1 m sensitivity of 97 dB! This article was originally published in Voice Coil, April 2018.
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Test Bench: Peerless by Tymphany DFM-2544R00-08 Compression Driver
June 27, 2018 by Vance Dickason

Test Bench: Peerless by Tymphany DFM-2544R00-08 Compression Driver

In this Test Bench, Vance Dickason examines the Peerless by Tymphany DFM-2544R00-08 compression driver, which is part of the brand’s new three model compression driver series. The compression driver features a 1” throat exit diameter, but with a 1.75” titanium diaphragm and the same type of polyimide surround. The DFM-2544R00-08 is driven by a 44.4 mm diameter voice coil wound with aluminum wire on a TIL film non-conducting former. This article was originally published in Voice Coil, March 2018.
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Test Bench: Precision Devices PD-CD1N Compression Driver
June 19, 2018 by Vance Dickason

Test Bench: Precision Devices PD-CD1N Compression Driver

In this month's Test Bench, Vance Dickason examines a new 1" PEEK diaphragm compression driver from Precision Devices, the PD.CD1N. This is a unique design in Precision Devices' UL portfolio, using a PEEK diaphragm/surround material, which also incorporates a three-slot optimized phase plug design and a 44 mm (1.73”) diameter voice coil wound with copper-clad aluminum wire on a Kapton former. This article was published in Voice Coil, March 2018.
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Test Bench: Wavecor WF259PA01 10-Inch PA Woofer
June 6, 2018 by Vance Dickason

Test Bench: Wavecor WF259PA01 10-Inch PA Woofer

This month, I characterized a a 10” PA woofer from Wavecor, model WF259PA01. This is an interesting driver since, until now, Wavecor has been known mainly for its high-end home hi-fi drivers. However, the company has decided to expand its coverage in the loudspeaker market and has introduced a well-designed 10” OEM pro sound PA woofer. The WF259PA01 is for now available only as an 8 Ω model, and uses a very stiff flat black coated curvilinear paper cone. This article was originally published in Voice Coil, February 2018.
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Test Bench: Precision Devices PD.CD2N 1.4” Titanium Diaphragm Compression Driver
May 30, 2018 by Vance Dickason

Test Bench: Precision Devices PD.CD2N 1.4” Titanium Diaphragm Compression Driver

In this edition of Test Bench, I characterized a 1.4” titanium diaphragm compression driver from Precision Devices. The new driver from this prestigious UK Pro Sound OEM manufacturer is part of a seven model lineup of high-performance neodymium compression drivers. The PD.CD2N has a 50.8 mm (2”) throat diameter, with a radial neodymium magnet motor structure, an aluminum three-slot phase plug, and nominal 105 W (AES) rated power handling. This article was originally published in Voice Coil, February 2018.
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