Tag Archives: hi-fi

Bose 901 Series 1 Active Equalizer Repair [Vintage Hi-Fi]

Posted on July 25, 2012 by jwk

(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 →

Posted in Electronics, Projects, Speakers, Vintage | Tagged , , , , , , , , , , , , , , , , | 37 Comments

Identifying Your Bose 901 Series 1 Equalizer [Vintage Hi-Fi] [Production Runs]

Posted on July 11, 2012 by jwk

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 , , , , , , , , , , , | 4 Comments

Build Log and Review: Mable Audio VT-86PP Kit Hi-Fi Amp Project [Chinese Gear]

Posted on March 30, 2012 by jwk

About a year ago, someone left a comment that really looked like spam on one of my pages advertising a web store selling tube audio gear and parts for guitar and audio amplifiers. Against everything I’ve ever learned about behaving … Continue reading →

Posted in Electronics, Hardware, Photos, Projects, Radios and Tubes, Technology | Tagged , , , , , , , , , , , , , , , , , , , , , , , , , , , , , | Leave a comment

Huge and Powerful: The 1937 GE F-135 Repair Complete

Posted on January 27, 2012 by jwk

I’ve finally had the time to finish one of my long-running projects repairing GE’s most powerful radio offering from 1937, the GE F-135. I picked it up from Craigslist back in November but other responsibilities kept me from getting much … Continue reading →

Posted in Photos, Projects, Radios and Tubes, Vintage | Tagged , , , , , , , , , , , , , , , , , , | 7 Comments

New Project Idea: Oddball Tube Hi-Fi Amplifier

Posted on July 12, 2011 by jwk

I’m looking for a new summer project, and think I’m going to branch off from repairing radios to building some of my own gear. I’m interested in making a tube hi-fi stereo amplifier to go with my old speakers – … Continue reading →

Posted in Electronics, Projects | Tagged , , , , , , , , , , | 3 Comments