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Monthly Archives: November 2015
Bose® 402E Active Equalizer #102853 Repaired
From the Rain City Audio Repair Blog: The first Bose® 402E Active Equalizer, for the Panaray speaker system, just came through the Rain City Audio repair bench. It’s a small speaker array system, designed around similar drivers in the 901, … Continue reading
Posted in Audio, Bose, Electronics, Projects
Tagged 402, 402e, Active Equalizer, audio precision, Bose, bose 402e, curve, frequency response, panaray
5 Comments
Service Shortcuts – November 1932
Radio Retailing brings you some helpful service shortcuts: Tube Numbering That Means Something The RMA is seriously considering a new three-character system of marking radio receiving tubes which may shortly come into general use in place of the present meaningless … Continue reading
Bose® 901 Series I Active Equalizer #51616 Repaired
From the Rain City Audio Repair Blog: Another Bose® 901 Series I Active Equalizer came through the shop for an overhaul! This one was from the very end of the Series I production run, serial #51616. This one appeared to … Continue reading
Posted in Audio, Bose, Electronics, Projects, Vintage
Tagged 901, Active Equalizer, Bose
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Are Kids the Future of Ham Radio?
Bob K0NR has an alternate take on how to keep ham radio alive as many of its practitioners age up: For whatever reason, it seems that most people find themselves in a situation as an adult that causes them to say … Continue reading
Posted in Commentary, Ham Radio
Tagged amateur radio, disaster communications, electronics, emergency communications, ham radio, hobby, kids
1 Comment
KF7LZE’s Blog is now RETROVOLTAGE
KF7LZE’s Blog is now RETROVOLTAGE. Same great content, and all your old links will still work – starting in 2016, you’ll see more content here around all types of vintage electronics, hobbyist projects, and other resources in addition to KF7LZE’s … Continue reading
Posted in Commentary
2 Comments
Harman-Kardon Festival D-1000 Tube Receiver Repair
All vintage gear has a story to tell, but something really rare and interesting recently came across the bench: the Harman-Kardon Festival D-1000. While it looks somewhat unassuming, a fairly straightforward 15-tube receiver with push-pull 6L6GC outputs and an AM … Continue reading
Posted in Audio, Electronics, Hi-Fi, Vintage
Tagged d-1000, festival, harman kardon, vintage receiver
4 Comments
Totem Acoustic ARC Digital HD Amplifier on Kickstarter
Totem Acoustic sent me some information about a very interesting new hifi amplifier they’re launching on Kickstarter. Based out of Montreal, they’re an established brand making hifi speakers optimized for desktop and streaming applications, and are coming out with a … Continue reading
Posted in Audio, Commentary, Electronics, Gadgets, Hi-Fi
Tagged amplifier, ARC, bluetooth, digital amplifier, kickstarter, streaming, totem acoustic, usb
2 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
The Speaker Spotter – November 6th, 2015
Today’s Speaker Spotter showing the most interesting speakers for sale on the local Craigslist has a number of rare, unusual, and high-end speakers you’re not likely to find anywhere else. As always, I’m not affiliated with any of these sellers, … Continue reading
Retrofitting Light Fixtures with New, High Efficiency LED Bulbs
I posted a while back about LED filament bulbs that use the new silicon-on-glass manufacturing process to produce Edison bulbs with thin strips of LEDs. Perfect for where you want that vintage styling of an incandescent bulb without all the … Continue reading →