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Tag Archives: hifi
Dynaco ST-70 Stereo High Fidelity Tube Amplifier
From Rain City Audio: I recently got to work on another vintage stereo kit, the Dynaco ST-70 amplifier. These were powerful, 35W per channel stereo amps typically using a pair of 6L6GC, EL34, or similar power tubes. This turned out … Continue reading
Posted in Audio, Electronics, Projects
Tagged Dynaco, dynakit, hifi, st-70, stereo amp, Tube Amp
2 Comments
Magnavox 1ST611R Tube Console Stereo Overhaul
From Rain City Audio: A customer recently brought me the guts from his Magnavox 1ST611R mid-century stereo console for an overhaul. He’d had the console for a while, working but with some trouble, but wanted to finally get it back … Continue reading
Posted in Electronics, Hi-Fi, Projects, Vintage
Tagged 1ST611R, chassis, chromecast, console, hifi, Magnavox, repair, stereo
2 Comments
BoseĀ® 901 Series II Active Equalizer #64364 Overhaul
This Series II BoseĀ® Active Equalizer came through the shop. It had suffered age-related failures in its electrolytic capacitors, and the resistors had drifted with age and moisture to produce the wrong curves. Fortunately, it’s nothing some maintenance can’t solve! … Continue reading
Posted in Audio, Bose, Electronics, Vintage
Tagged Active Equalizer, Bose, capacitor, hifi, repair, series II, transistor, vintage
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Merry Christmas from KF7LZE & Rain City Audio!
Season’s Greetings!
Posted in Collections, Commentary, Vintage
Tagged 1950s, christmas, hifi, merry christmas, vintage audio, vintage speaker
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1956 Grundig 8080 German Hi-Fi Console Repair
Cross-posted from Rain City Audio: German radios like this one are a lot more difficult to work on than most American and Canadian radios, and they’re a lot less common, but they do turn up once in a while. This … Continue reading
Posted in Hi-Fi, Projects, Radios and Tubes, Vintage
Tagged console, EL84, german, germany, grundig 8080, hifi, phonograph, record player, stereo
1 Comment
Bose 901 Series 1 Active Equalizer Repair [Vintage Hi-Fi]
(Need your Active Equalizer repaired? Visit Rain City Audio) While some other projects have been pending information and parts, I’ve had a chance to work on the Bose 901 Series 1 equalizer that’s been on my bench for a couple … Continue reading
Merry Christmas from Retrovoltage!
Radio & Television News, December 1954