All items tagged with Test Bench (273)
Test Bench - Dayton Audio ES140Ti-8 5.5” Midwoofer
December 20, 2015 by Vance Dickason

Test Bench - Dayton Audio ES140Ti-8 5.5” Midwoofer

This test bench looks at the ES140Ti-8 5.5” midwoofer, which is another model from Dayton Audio’s new Esoteric line. Features for the ES-140Ti are similar to the companion model ES-180Ti and include a well configured proprietary six-spoke cast-aluminum frame with narrow 9-mm wide spokes to minimize reflections back into the cone. This article was originally published in Voice Coil, January 2015.
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Test Bench - SB Acoustics SB65WBAC25-4 2.5” full-range driver
December 15, 2015 by Vance Dickason

Test Bench - SB Acoustics SB65WBAC25-4 2.5” full-range driver

Unquestionably, the 2” to 2.5” diameter full-range drivers are one of the most used transducers in consumer electronics. They are finding broad use in soundbars, and desktop speakers). Indonesian-based SB Acoustics sent its entry into this crowded field of play, the new SB65WBAC25-4.
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Test Bench - Dayton Audio ES180Ti-8 7” High-End Midbass Woofer
December 8, 2015 by Vance Dickason

Test Bench - Dayton Audio ES180Ti-8 7” High-End Midbass Woofer

In this test, Vance Dickason characterizes a 7” midwoofer from Dayton Audio’s Esoteric Series of home-audio oriented drivers. The ES180TI-8 is a very good-looking driver with a well thought out neodymium magnet motor design, FEA designed. This article was originally published in Voice Coil, December 2014.
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Test Bench - Celestion CF1840JD 18” subwoofer
November 27, 2015 by Vance Dickason

Test Bench - Celestion CF1840JD 18” subwoofer

This Test Bench analysis discusses Celestion CF1840JD pro sound 18” woofer. The CF1840JD is a fairly high power handling woofer rated at 1,000 WRMS (AES standard), featuring a substantial ferrite finite element analysis (FEA) optimized motor assembly, an 18” Kevlar-loaded paper cone and large 5.5” diameter paper dust cap. This article was originally published in Voice Coil, December 2014.
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Test Bench - Acustica Beyma’s 12CXA400Nd 12” Pro Sound Coaxial Driver
November 24, 2015 by Vance Dickason

Test Bench - Acustica Beyma’s 12CXA400Nd 12” Pro Sound Coaxial Driver

Pro sound OEM driver manufacturer Acustica Beyma's extensive line of pro sound coaxial drivers now includes the 12CXA400Nd 12” coaxial driver. Applications for 12” drivers include floor monitors for stage use, studio monitors, or any requirement where baffle space is limited. This article was originally published in Voice Coil, October 2014.
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Test Bench - Tymphany Peerless SLS-85S25CP-04-04 3.5” Woofer
November 16, 2015 by Vance Dickason

Test Bench - Tymphany Peerless SLS-85S25CP-04-04 3.5” Woofer

The Tymphany SLS-85S25CP-04-04 mini-woofer is extensively used in TV soundbars, pedestal soundbars (soundbars that contain down firing subwoofers that double as a TV stand), docking stations/Bluetooth powered speakers, and desktop speakers (e.g., the Sonos products, Jambox, and many others). For two-way applications in these categories, this LS-85S25CP-04-04 is a good example of what works.
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Test Bench - BMS 18S450 18” Pro Sound Subwoofer
October 21, 2015 by Vance Dickason

Test Bench - BMS 18S450 18” Pro Sound Subwoofer

Voice Coil characterizes an 18” pro sound subwoofer from BMS Speakers, a noted German pro sound company. The BMS 18S450 is high power handling woofer rated at 1,200 WRMS. It weighs a moderate (for an 18”) 32 lb. Features for the 18S450 are rather substantial and include a proprietary eight-spoke cast-aluminum frame. This article was originally published in Voice Coil August 2104.
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Test Bench - B&C Speakers 12NDL88 12” Woofer
October 12, 2015 by Vance Dickason

Test Bench - B&C Speakers 12NDL88 12” Woofer

This Test Bench is about the 12NDL88 from Italian pro sound OEM, B&C Speakers. The 12NDL88 is a new 12” high sound pressure level (SPL) woofer, with a neodymium motor and a continuous power handling rating of 1,400 W (700 W RMS). This article was originally published in Voice Coil, August 2015.
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An Interview with Patrick Turnmire
September 8, 2015 by Vance Dickason

An Interview with Patrick Turnmire

This interview was published in Voice Coil August 2013. Nearly 10 years since Patrick Turnmire, of Redrock Acoustics, had started providing Voice Coil with valuable Klippel data for Vance Dickason’s the Test Bench column. In this interview Patrick Turnmire explains his work with his company, Redrock Acoustics.
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audioXpress March 2015—Focus on Test & Measurement, available online!
January 31, 2015 by audioXpress Staff

audioXpress March 2015—Focus on Test & Measurement, available online!

For our March 2015 edition, we have selected a series of articles dedicated to Test & Measurement, both from a practical and a DIY perspective. First is Ethan Winer’s (re)take on Practical Applications for SPL Meters, followed by an historical recap from Voice Coil magazine editor Vance Dickason, on his reputed Test Bench process used to characterize drivers. We also discuss Headphone Testing issues among other things.
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