All items tagged with Test Bench (276)

Test Bench: Two Beryllium Tweeters from Scan-Speak - D3004-604010 and the D3004-604000

April 5, 2017 by Vance Dickason

Test Bench: Two Beryllium Tweeters from Scan-Speak - D3004-604010 and the D3004-604000

In this edition of Voice Coil's Test Bench we review two beryllium dome tweeters from Scan-Speak. These two new beryllium diaphragm neodymium motor tweeters, the D3004/604010 and the D3004/604000, basically share the same platform, with the major difference being the D3004/604010 has a lower Fs due to the larger rear cavity. Both tweeters use a Materion 26-mm 99% pure beryllium dome. This article was originally published in Voice Coil, May 2016

Test Bench: Bozhen New Audio Lab CQ66 Ribbon Tweeter

March 29, 2017 by Vance Dickason

Test Bench: Bozhen New Audio Lab CQ66 Ribbon Tweeter

This month brought an interesting high-frequency driver to Voice Coil’s Test Bench, a new high-end ribbon tweeter from a Shenzhen, China-based company, Bozhen New Audio Lab. From Bozhen, we received the CQ66, which is the next generation of its CQ76 ribbon tweeter (featured in Voice Coil’s April 2013 issue). This article was originally published in Voice Coil, May 2016.

Test Bench: The SB42FHCL75-6 15” Subwoofer from SB Acoustics

March 14, 2017 by Vance Dickason

Test Bench: The SB42FHCL75-6 15” Subwoofer from SB Acoustics

In this edition of Test Bench, we characterize the SB42FHCL75-6, a 15” home audio subwoofer from OEM driver manufacturer SB Acoustics. The SB42FHCL75-6 has an impressive feature set, with a stiff 15” cone, NBR high-excursion surround, and 6.5” diameter flat cloth spider, driven by a 3” four layer voice coil. The motor system utilizes two stacked 20-mm thick ferrite magnets sandwiched between a polished 8-mm thick front plate. This article was originally published in Voice Coil, April 2016.

Test Bench: Tang Band RT-2202S Ribbon High-Frequency Transducer

March 6, 2017 by Vance Dickason

Test Bench: Tang Band RT-2202S Ribbon High-Frequency Transducer

This month, I received a ribbon transducer for Test Bench analysis from Tang Band (TB) Speaker. The RT-2202S device is a closed-back ribbon tweeter with a fairly small 30 mm × 10 mm ribbon diaphragm. Features include a thin aluminum foil diaphragm, an injection-molded face plate, a metal chassis, Nd-Fe-B (neodymium) magnet, and a matching transformer. This article was originally published in Voice Coil, April 2016.

February 24, 2017 by Vance Dickason

Test Bench: Dayton Audio LW150-4 6” Ultra-Low-Profile Midwoofer

This edition of Test Bench characterizes Dayton Audio’s new 6” diameter ultra-low-profile midwoofer, the LW150-4. This is a new ultrathin profile cone 6” diameter midbass driver featuring a six-spoke cast-aluminum frame with a 1.5” total depth. The depth reduction is significant as the motor assembly is housed inside the frame and uses a neodymium slug and a 1.5” diameter return cup that incorporates a T-pole. This article was originally published in Voice Coil, March 2016.

Test Bench: Eminence N314T-8 with H14EA Horn and N320T-8 with H2EA Horn

February 23, 2017 by Vance Dickason

Test Bench: Eminence N314T-8 with H14EA Horn and N320T-8 with H2EA Horn

In this Test Bench, Voice Coil characterizes two high-end compression drivers and horns from Eminence, the N314T-8 with the H14EA horn, and the N320T-8 with the H2EA horn. Both these neodymium motor compression drivers from Eminence share pretty much the same feature set. The main difference is the N314T-8 is configured for a 1.4” throat, and the N320T-8 is configured for a 2” diameter throat. This article was originally published in audioXpress, March 2016.

Test Bench: Dayton Audio CF120-4 4-1/2" Woven Carbon Fiber Midwoofer

February 4, 2017 by Vance Dickason

Test Bench: Dayton Audio CF120-4 4-1/2" Woven Carbon Fiber Midwoofer

In this Test Bench, Voice Coil characterizes Dayton Audio’s new 4.5” diameter carbon fiber cone midwoofer, the CF120-4. This new midbass driver from Dayton Audio features a pin-cushion style four-spoke cast-aluminum frame. For the cone assembly, Dayton Audio chose a rather stiff curved profile woven carbon fiber cone with a 1.13” diameter convex woven carbon fiber dust cap. This article was originally published in Voice Coil, February 2016.

Test Bench: SB Acoustics Satori TW29RN High-End Tweeter

February 1, 2017 by Vance Dickason

Test Bench: SB Acoustics Satori TW29RN High-End Tweeter

This Test Bench focuses on SB Acoustics’ Satori high-end line of drivers, the Satori TW29RN. This neodymium 29-mm ring dome features a surround coated cloth ring-type diaphragm, a non-reflective cast-aluminum rear cavity, a two-part aluminum faceplate with integrated mechanical decoupling, dual balanced compression chambers, high saturation neodymium ring type motor magnet with a T-shaped pole and dual copper shorting rings, a CCAW voice coil, a foam mounting gasket, and gold-plated terminals. This article was originally published in Voice Coil, February 2016.

Test Bench: Morel TSCT 1044 High-End Tweeter

January 26, 2017 by Vance Dickason

Test Bench: Morel TSCT 1044 High-End Tweeter

For this Test Bench I received Morel's new soft dome tweeter, the 28 mm TSCT 1044. As part of the Supreme line, the TSCT 1044 and the similar TSCT 1144 (which is the same tweeter with a larger faceplate) are both an entirely new design for Morel and incorporates the company’s Improved Dispersion Recess (IDR) faceplate design, which is a shaped inset in the round metal faceplate. This article was originally published in Voice Coil, February 2016.

Test Bench: MAG Audio 10N501 Woofer

January 16, 2017 by Vance Dickason

Test Bench: MAG Audio 10N501 Woofer

This Test Bench characterizes the 10N501, a distributed neodymium magnet motor 10” woofer from Ukrainian pro sound OEM manufacturer MAG Audio. The MAG 10N501’s removable self-centering motor system is comprised of 12 28 mm × 8 mm polished neodymium slugs sandwiched between an 8 mm front plate and a two-part, cleverly designed T-yoke. This article was originally published in Voice Coil, January 2016.

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