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March 2021 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 31 Meta
Tag Archives: photos
Harman/Kardon Control Amplifier A-401 Restoration
This little Harman/Kardon Control Amplifier, model A-401, just came through the shop for a full overhaul. It was in a pretty sorry state to begin with – one channel distorted, one barely gasping for air, and a world of scratchy … Continue reading
Posted in Audio, Electronics, Hi-Fi, Projects, Stereo, Vintage
Tagged a-401, amp, amplifier, circuit boards, control amplifier, harman/kardon, hi-fi, photos, pictures, rebuild, restoration, stereo, stereo pictures, vintage stereo
4 Comments
Vintage Engineering is Beautiful
Varistor from Harmony H500 Guitar Amplifier
Posted in Collections, Photos, Vintage
Tagged beautiful, h500, harmony, photos, varistor, vintage engineering
1 Comment
Vintage Engineering is Beautiful
1931 Radiola 82 IF Transformer. Hand-wound coils on a wooden coil form.
Posted in Collections, Photos, Vintage
Tagged beautiful, IF transformer, photos, radiola, vintage engineering
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Bose 901 Series II Active Equalizer #67402 Repair
This equalizer got a full overhaul with new 1% precision resistors, electrolytic capacitors, audiophile-grade output capacitors, transistors, gold-plated RCA jacks, 4% silver solder for all connections, a thorough switch cleaning, and computerized frequency response testing and a listening burn-in to verify proper operation. It sounds just fantastic with a very dynamic and life-like presence that really draws you into the experience of the source material, just like the Bose 901 should.
New Toy: Tektronix 575 Transistor-Curve Tracer (Restoration Project)
I picked up a new shop toy just the other day, a Tektronix 575 Transistor-Curve Tracer. This is a piece of lab gear I’ll use to match transistors for their operating characteristics, and can also be used to analyze and … Continue reading
Posted in Electronics, Gadgets, Projects, Vintage
Tagged Curve Tracer, garage, photos, tektronix, Tektronix 575, transistor curve tracer
5 Comments
Close-Up of a Magic Eye
Posted in Photos, Vintage
Tagged 6g5, cat's eye, magic eye, magic eye indicator, photos, tuning eye, tuning indicator
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1962 Coronet 6 Transistor Shirt-Pocket Radio TRN-6
This rare early shirt-pocket transistor radio, the Coronet TRN-6, needed a few new capacitors to sound its best. It delivers surprising performance from such a small package! Plenty of tear-down photos in this article.
Posted in Radio, Radios and Tubes, Vintage
Tagged 6 transistor radio, capacitor, capacitor replacement, Coronet, coronet 6 transistor radio, coronet transistor radio, coronet trn-6, photos, portable transistor radio, repair photos, seattle vintage radio repair, shirt-pocket radio, transistor radio, transistor radio repair, trn-6, vintage
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The Speaker Spotter – Speakers of Craigslist – March 7th, 2014
There’s always something interesting for sale on Craigslist, especially in Seattle. Here’s a selection of especially notable vintage speakers and other audio products for sale on the local Craigslist. I’m not affiliated with any of these sales, but if you’re interested, you … Continue reading
Posted in Audio, Collections, Photos, Speakers, Stereo, Vintage
Tagged Allison, Allison One, Bose, Bose 601, Corner Horn, Craigslist, Fisher, Fisher XP95B, Infinity, Infinity Kappa 8, Infinity RSe, k horn, Kappa 8, kenwood, KL-333D, KL-777A, klipschorn, LS-20, Marantz, Marantz LS-20, OA-14, photo, photos, RSe, series III, Seven, Six, Sonab, Sonab OA-14, speaker, speaker spotter, speakerlab, Speakers, speakers of craigslist, Super Seven, vintage, XP95B
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Big Antennas on Cars Photo Round-Up
I liked KC3RE’s VHF rover enough, I went looking for other interesting car radio installations. There’s quite a few! This Ford Escort has a pretty inconspicuous setup. This isn’t the same vehicle, but it might be similar: Car blog Jalopnik details … Continue reading
What’s On Your Workbench?
People ask me what kind of gear I use at Retrovoltage and at Rain City Audio for projects. So, here we go: While it’s by no means the best-equipped workbench out there, it has a good mix of lab- and service-grade … Continue reading →