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Tag Archives: series I
Everything to Know about Bose 901 Series I and Series II Active Equalizer Repair & Speaker Systems (and the 800, too!)
A deep dive into the history and repair of Bose 901 Series I and II, plus the Bose 800, sourced from direct experience repairing more than 500 Active Equalizers. Includes vintage ad copy, photos, tips and tricks, schematics, and parts lists. Continue reading
Posted in Audio, Bose, Collections, Resources
Tagged 800, 901, Active Equalizer, Bose, Bose Active Equalizer, Bose Equalizer, Computers, diy, electronics, philosophy, series I, series II, stereo equalizer, Technology, vintage stereo
5 Comments
The Speaker Spotter – Speakers of Craigslist – March 14th, 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 12W, 15W, Active Equalizer, Akai, altec, altec lansing, Bose, Bose 901, cornwall, Craigslist, Duchess, E-V, Electro-Voice, Electrovoice, Equalizer, EV, heresy, heresy II, KG4, Klipsch, Regency, S-1117, Sansui, series I, series II, series IV, Series V, SKO, SP-100, SP-12, SP12, speaker, speaker spotter, speakerlab, Speakers, speakers of craigslist, SW 177, T25, T25A, T35, The Duchess, Voice of the Theater, Voice of the Theatre, W-35, WD-35, Wharfedale
2 Comments
Bose 901 Series I Active Equalizer #50911 Repaired
I recently had this Bose 901 Series I Active Equalizer, serial number 50911, in the shop for repair. These are a lot of fun to work on and very rewarding for the great sound they produce when they’re working properly. … Continue reading
Posted in Audio, Bose, Electronics, Projects, Vintage
Tagged Active Equalizer, Bose, Bose 901, repair, Series 1, series I, vintage
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RETROVOLTAGE 
What do we have here?
I was reading about how to build a capacitor checker from the December 1959 issue of Popular Electronics and stumbled across something that looked very familiar. I know that shape. Nearly identical to a Bose® 901 Series I/II cabinet, and even … Continue reading →