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Tag Archives: audio
Bose® 901 Series I Active Equalizer #6878 Repair
This early-production Bose® 901 Active Equalizer came through the shop recently for a repair. These Early models were the very first production run, back in 1968, and have a pretty significantly different circuit design from the later models, and feature … Continue reading
Posted in Audio, Bose, Electronics, Hi-Fi, Vintage
Tagged Active Equalizer, audio, Bose, repair, series I
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Mailbag: Is The Bose 901 Equalizer Really Necessary?
I take questions from readers often, but they don’t always make it to a Mailbag segment. I’ve got this one a few times lately, though, so I figured I’d answer this one publicly. Jim from Ohio writes, I bought a … Continue reading
Posted in Uncategorized
Tagged Active Equalizer, audio, audiophile, Bose, Bose 901, Equalizer, kenwood, Speakers, stereo, vintage
8 Comments
Thrift Store Jamo MPA-101 Repaired – She’s Back Up and Running!
I started working on a Jamo MPA-101 amplifier back in August for a friend and after some early work it sat for a while. He’s re-doing his audio system at home so I spent a few hours to finish troubleshooting … Continue reading
Posted in DIY, Electronics, Projects, Speakers
Tagged 600hz, amp, amplifier, audio, cable, distortion, hack, Jamo, Klipsch, MPA-101, oscilloscope, probe, repair, replacement, resistor, Rigol, scope, soldering, stereo, volume
11 Comments
An interesting mystery disc discovered.
I stumbled across an interesting post over at Arcane Radio Trivia where the author discovered an old Home Recording Acetate, in bad shape, but still intact enough to recover some information. From around or before 1940, these “phonograms” were used to … Continue reading
Posted in Commentary, Radios and Tubes, Vintage
Tagged 78 rpm, arcane radio trivia, audio, home recording acetate, phonogram, phonograph, radio, rca victor, record, record player, recording
1 Comment
Buy the Album, Guys. [EVE 6 – Speak in Code: Audio Quality]
One of my favorite bands, EVE 6, recently got back together after a multi-year hiatus and put out a new album. “Speak in Code” came out a few weeks ago. I caught the band on their tour through Seattle just … Continue reading
Posted in Commentary, Music, Software, Technology
Tagged album, analysis, audio, audio quality, bittorrent, buy, CD, collectible, download, dropcards.com, eve 6, fearless records, fft, Inner Sanctum, lossless, mp3, PCM, quality, record, show, speak in code, spectrogram, uncompressed, victoria, vinyl
1 Comment
Magic Eye Tube Spectrum Analyzer
French hobbyist Sylvain came up with a fascinating project using 8 Magic Eye tubes from old equipment to make an audio spectrum analyzer. I’ve worked with magic eye tubes quite a few times, they’re very fascinating. Originally precursors to CRTs, they’ve found … Continue reading →