Monthly Archives: July 2015

Sony ST-J75 Recap and Alignment

Cross-posted from the Rain City Audio Repair Blog: The Sony ST-J75 is a pretty well regarded, great sounding stereo FM tuner from the early ’80s. It’s one of the first forrays into digital tuning, with a frequency read-out, programmable memory, … Continue reading

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The Hewlett-Packard 5451A Fourier Analyzer

1972: the year launching the Space Shuttle program, the completion of the monument at Stone Mountain, Watergate, the first female FBI agents to join the force….and the new HP 5451A Fourier Analyzer, bringing unparalleled performance to the worlds of acoustic … Continue reading

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Stereo Aficionados

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Want an Acer Chromebook? They’re really cheap right now on eBay.

Back in June, I’d picked up an Acer Chromebook CB5-311 from Amazon. At the time, it was $377 for a pretty high-end machine with 12+ hours of battery life, a quad-core nVidia Tegra CPU and Kepler GPU with 4GB of RAM … Continue reading

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Bose® 901 Series II #102678 Restoration

Cross-posted from the Rain City Audio Repair Blog: Another Bose® Active Equalizer came through the shop, this one’s a Series II. The owner reported that one channel had failed and the switches were badly gummed up. Time for a rebuild! … Continue reading

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Old rocker complains about new technology

According to Rolling Stone, Neil Young is pulling his catalog from all streaming music services over complaints about the sound quality. I don’t see this impacting me personally since I don’t listen to him and indeed can’t even name a … Continue reading

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1950s Motorola Modded Standalone Tube Amplifier Measurements

Cross-posted from the Rain City Audio Repair Blog: Rain City Audio had an unusual project through the shop recently. It’s a Magnavox tube amp from the late 1950s. The owner brought it in reporting he’d purchased the amplifier, pulled from … Continue reading

Posted in Audio, DIY, Electronics, Hi-Fi, Projects, Radios and Tubes, Vintage | Tagged , , | 3 Comments