Tag Archives: vintage

Bose® 901 Series VI Active Equalizer #199732 Repaired

Cross-posted from the Rain City Audio Repair Blog: A first for my shop, I recently worked on a Bose® 901 Series VI Active Equalizer! These are considerably newer than the Series I-IV that typically come through the shop, although they’re … Continue reading

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Bose® 901 Series I Active Equalizer #55382 Refurbished [Repair Blog]

Cross-posted from the Rain City Audio Repair Blog: Another Bose® 901 Series I Active Equalizer came through the shop recently for a full rebuild. These are all nearly 50 years old and are definitely showing their age, and this one … Continue reading

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Bose® 901 Series I #38949 Repaired [Repair Blog]

Cross-posted from the Rain City Audio Repair Blog: Another Bose® 901 Series I Active Equalizer came through the shop. These equalizers were manufactured between 1968 and 1973 and are really showing their age: most have degraded in one way or … Continue reading

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Bose® 901 Active Equalizer Series I #17118 Repaired

Cross-Posted from the Rain City Audio Repair Blog: This Bose® 901 Active Equalizer came in through the shop for the standard overhaul service. It was showing its age, as most of these equalizers from Series I and II will do … Continue reading

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Vintage Engineering is Beautiful [’70s TV]

’70s Industrial Modern Television in Custom Enclosure

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EICO Stereophonic Integrated Amplifier HF-81 Repair

From the late ’50s, I had this nice example of an EICO HF-81 amplifier come through my shop. These are nice little stereo amplifiers with a built-in phono pre-amp and RIAA equalization and feature about 14W of power output per … Continue reading

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Marantz 2270 Stereophonic Receiver Overhaul

I just had a great stereo receiver through the shop for repairs, the Marantz 2270. It’s the big brother to the Marantz 2245 I had through the shop a little while ago – mostly the same front-end circuitry, but with … Continue reading

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