Test Bench: Peerless by Tymphany Full-Range 5” PLS-65F25AL01-08

Following the review of the Peerless by Tymphany PLS 2” PLS-50N25AL01-08 neodymium motor full range, in this edition of Test Bench I reviewed the 2.5" PLS-65F25AL01-08 ferrite motor full-range model. This 2.5" 8 ohm full-range member of the PLS family, the Peerless PLS-65F25AL01-08, has some differences. Unlike the PLS-50N plastic frame, the PLS-65F is built on a proprietary stamped steel frame that is fully vented below the spider mounting shelf with four 24 mm × 4 mm cutouts for enhanced cooling. This article was originally published in Voice Coil, November 2017.

The 2” to 2.5” diameter full-range drivers are unquestionably one of the most used transducers in consumer electronics. I asked the folks at Tymphany to send a couple of transducers from their Peerless by Tymphany PLS line of full-range 2” to 3” drivers. I specifically asked for the 2” PLS-50N25AL01-08 neodymium motor full range (reviewed here) as well as the 2.5” PLS-65F25AL01-08 ferrite motor full-range (reviewed separately). This article was originally published in Voice Coil, November 2017.

audioXpress November 2017 featured one of the most eagerly awaited reviews: the OPPO Digital UDP-205 4K Ultra HD Audiophile Blu-ray Disc Player. The new UDP-205 features dual ES9038PRO Sabre DAC chips, improved HDMI audio clock, asynchronous USB DAC with coaxial and optical inputs, headphone amplifier, and a dedicated stereo output with XLR balanced connectors. In his review Gary Galo explains why this is the 4K Ultra HD Blu-ray Disc player for which audio enthusiasts were waiting.

As Voice Coil celebrates its 31st anniversary, our November 2017 edition reflects on its heritage and jumps directly to the future of speaker design with an exciting Test Bench of two full-range drivers from the Peerless by Tymphany PLS Line - precisely the ones that are now powering some of the so-called smart speakers. This edition also features a complete directory of Measurement Microphone vendors.

Discover some outstanding speaker designs in the Midwest Audiofest 2017 Speaker Competition with audioXpress November 2017. In this edition, audioXpress also features one of the most eagerly awaited reviews: the OPPO Digital UDP-205 4K Ultra HD Audiophile Blu-ray Disc Player. Focusing on audio processing, we discuss active noise control for headphones, and we address "Measurement of Audio Devices" that use automatic gain control (AGC). In our "You Can DIY!" article, Dan Joffe describes a 1 kHz oscillator with less than 2 PPM distortion. And much more...