Bose® 901 Series II #71033 Overhaul

From Rain City Audio:

This Bose® 901 Series II Active Equalizer, #71033, came into the shop for an overhaul recently. It was showing some signs of age, in this case, a bad left channel. Nothing Rain City Audio can’t fix!

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This unit was mostly original, although some of the electrolytic capacitors may have been serviced previously. No matter, though: all old parts were replaced with new.

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The owner also requested some upgrades, including output capacitors, new transistors, and the addition of a switch to the power cord since his receiver did not come with switched outlets.

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An inline power switch, since the owner’s receiver doesn’t have switched outlets and the Series II is always-on.

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Testing showed all was good!

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After a full overhaul and control cleaning, it works and sounds great on all functions and settings!

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This entry was posted in Audio, Bose, Electronics, Stereo, Vintage and tagged , , , . Bookmark the permalink.

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