Bose® 901 Series II Active Equalizer #96405 Overhaul and Upgrade

This Bose® 901 Series II Active Equalizer, #96405, just came through the shop for the standard overhaul and a bit of an upgrade. It was suffering from the usual age-related issues, and had been worked on a bit in the past but was due for another job.

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The electrolytic capacitors had been worked on in the past, but that repair was decades ago. Time to replace some parts:

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To fit upgraded capacitors, the board needed to be drilled to fit the thicker leads.

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Everything back in place, and soldered up with silver solder, this equalizer was ready to go home.

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