The article also discusses troubles with the earliest electrolytic capacitors and procuring replacement parts for tube amplifiers.Īll this is available in audioXpress July 2017, now ready to access and download online. In this article, Honeycutt discusses in particular routine maintenance for the classic Ampeg SVT amplifier, one of the most revered tube amps in the market. This month, Richard Honeycutt’s Hollow-State Electronics column continues its focus on guitar amplifiers. More recently, Pat Quilter decided to also be the "head guru” for Quilter Labs, where he designs and manufactures premiere guitar and musical instrument amplifiers for some of the leading artists and performers in the music industry. We interviewed Pat Quilter, the founder of Quilter Sound Company, better known as QSC. Our monthly Question & Answer by Shannon Becker is an historic one. The article also addresses how difficult acoustics negatively affect those who wear hearing aids, and problems with noise exposure in school cafeterias. In Sound Control, Richard Honeycutt writes about “Noise in Dining Spaces,” the problem of difficult acoustics in spaces where customers would typically like to engage in normal table conversations but they even have trouble talking to the waiters. The modifications designed by Lin expand its drive capability and sound quality. The model was always used by Stax for designing headphones, but could not withstand more demanding headphone models. The Stax SRM-T1 electrostatic headphone amplifier was released in 1987, updated to the T1S with balanced XLR inputs in 1993 and to the T1W with extra switching facilities in 1994. This advanced project, written by James Lin, takes the lessons learned from building the SRX Plus hybrid headphone amplifier, described in audioXpress in November and December 2015. Our second DIY project for the month details how to improve the Stax SRM-T1 electrostatic headphone amplifier. The article completes the project, detailing its design and construction. In our DIY section, this edition features the second part of the Thomas Perazella’s Cherry Bomb VFET SET Amplifier project, using a very rare Yamaha 2SK77 VFET transistor. Tipton also addresses some of the free and non-free loudness measuring programs for Windows and Mac, starting with BS1770GAIN and MP3TAG - two free Windows programs dpMeter II, a free loudness measurement DAW plugin and MLoudness Analyzer, another free DAW plugin from Melda Production. Although several other manufacturers of D/A converters and stand-alone digital players have used the new ESS chip, Benchmark’s implementation has ensured the best possible operating environment for the chip and Galo explains why.Ĭontinuing the new article series on Loudness Revisited, in Part 2, Ron Tipton writes about loudness normalization and discusses True Peak and absolute vs. Much of the technology in the DAC2 and DAC3 converters is the same, but for the DAC3, Benchmark used the new ESS Technology ES9028PRO D/A converter chip, widely recognized in the industry as one of the best DAC chips ever made. In 2015, Gary Galo reviewed the Benchmark DAC2 DX - review available on the audioXpress website. This time it’s the Benchmark DAC3 HGC Stereo D/A Converter written by Gary Galo. The M50 under review ($1299 retail price) is the top entry of the M series, which mainly differs in high frequency cutoff between models.Īnother main cover highlight for July 2017 is another review. Earthworks, a well-regarded brand based in the US, manufactures the M series microphones, targeted at the middle of the market, and ranging in price from $500 to $1300 per microphone. Next up, Stuart Yaniger reviews the Earthworks M50 Omnidirectional Measurement Microphone. In this article, we explore the company's Ncore technology, and the Nc 400 amplifier module. Hypex is mainly known for its Class-D power amplifiers modules and is now one of the top OEM choices for professional audio, studio monitors, and active hi-fi loudspeakers. This month, Ward Maas writes about Dutch company Hypex, one of the rising stars on amplifier technology since it was founded in 1996. In audioXpress July 2017, we continue our Amplifier Series, exploring the history, recent developments, and new-generation products from some of the most innovative amplifier platform companies serving all segments of the audio industry.
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