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Monthly Archives: July 2012
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
How to Make a Vacuum Tube from Scratch
This French radio amateur takes the classical ingenuity of radio amateurs everywhere to an incredible level, creating his own triodes similar to those used in the 1920s from scratch. Watch!
Posted in DIY, Electronics, Radios and Tubes
Tagged Claude Paillard, F2FO, glass, glass blowing, hand made, homemade, thermionic valve, triode, vacuum tube
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Identifying Your Bose 901 Series 1 Equalizer [Vintage Hi-Fi] [Production Runs]
Bose 901 Series I Active Equalizers came in two varieties, which can be used interchangeably, but have fairly different circuit designs. It’s simple to tell them apart for ordering parts for a repair with a quick inspection of the inside. Both … Continue reading
Posted in Electronics, Projects, Vintage
Tagged Active Equalizer, audiophile, Bose, Bose 901, capacitor, capacitor replacement, Equalizer, hi-fi, repair, Series 1, Series 2, Speakers
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July Projects
July is always a pretty busy month – it’s finally summer in the Pacific Northwest and so my attention is divided between my electronics work and spending time in the great outdoors. I have a few things in the pipeline for … Continue reading
Posted in DIY, Ideas, Photos, Projects
Tagged Active Equalizer, Bose 901, EQ, GE J-105, Grundig 5399U/S, Grundig Radio, July Projects, projects, Series 1
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Twitter failed. Hard.
So badly, in fact, it looks like their scripting mark-up isn’t even being processed. Not what I expected to see from such a web giant. via Boing Boing