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Categories
June 2023 S M T W T F S 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Meta
Category Archives: Stereo
HH Scott HHS-20 “Scotsman” Receiver Overhaul
A local repeat customer recently brought in his old HH Scott HHS-20 receiver for an overhaul. It worked a few years ago when he put it away, although not without a few issues of its own, and when he dug … Continue reading
Posted in Audio, Electronics, Projects, Stereo, Vintage
3 Comments
Bose® Active Equalizer Test Platform
This project is going to take a while since I’m slammed in the shop, but I’m in the process of converting a Bose® 901 Series I Active Equalizer to a test platform. With sockets for the transistors, and clip connections … Continue reading
Posted in Audio, Bose, DIY, Electronics, Stereo, Test Equipment
Tagged Bose, conversion, Equalizer, sockets, test platform, transistor
3 Comments
Neat Little 60FX5 Stereo Single-Ended Tube Amplifier
While digging around, I came across a really simple circuit in the RCA Receiving Tube Manual describing a 1WPC stereo amplifier using only two tubes, the 60FX5 power pentodes, and a single silicon diode. The 60FX5s have high enough gain … Continue reading
The Speaker Spotter – March 3rd, 2016
Some interesting stuff on Craigslist in this week’s The Speaker Spotter, a curated selection of Seattle’s local speakers for sale online. As always, Retrovoltage is not affiliated with any of these sellers and you should click through the link to the … Continue reading
Posted in Audio, Collections, Speakers, Stereo
Tagged Bose, carver, dali, ess, jbl, kef, phase research, tannoy, the speaker spotter, totem acoustic
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HH Scott 233 Stereo Integrated Amplifier Overhaul
From the Rain City Audio repair blog: I was lucky enough to get to work on a very nice Scott 233 stereo integrated amplifier. This example was wonderfully well preserved, coming out of a storage unit looking like it had … Continue reading
Posted in Audio, Electronics, Radios and Tubes, Stereo, Vintage
Tagged 233, hh scott, scott, stereomaster, Tube Amp, tube stereo, vintage amp
5 Comments
Harman-Kardon Citation 11 Pre-Amp Overhaul
From the Rain City Audio Repair Blog: A local customer brought me his brother’s Citation 11 for a full overhaul. After a few decades of faithful stereo reproduction, then a number of years in storage, it was time for an overhaul to … Continue reading
Posted in Audio, Electronics, Projects, Stereo, Vintage
Tagged citation 11, harman kardon, preamp, stereo repair, vintage repair
12 Comments
1963 Fisher FM-100-B Stereo FM Tuner Overhaul
Cross-posted from the Rain City Audio repair blog: Something a bit unusual came through the shop recently, an old tube-type Fisher FM-100-B Stereo FM tuner. Anyone who knows classic tube audio knows Fisher, and the FM-100-B sure lives up to … Continue reading
Posted in Audio, Electronics, Radios and Tubes, Stereo, Vintage
Tagged alignment, Fisher, fm alignment, fm-100-b, mpx, stereo
3 Comments
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
Stereo Aficionados
Posted in Audio, Commentary, Stereo
Tagged expense, inconvenience, phonograph, stereo, turntable, vinyl
1 Comment
Reviewing the Gemtune APPJ PA1501A 6AD10 Stereo Tube Amplifier
I recently picked up an interesting little tube amp via a group buy on Massdrop, the Gemtune APPJ PA1501A stereo tube amplifier. Try saying that three times fast! It’s a cute little single-ended stereo tube amp using a pair of 6AD10 … Continue reading →