Mix Blog: Ampex 351 Resurrection, The Sequel — Part 2: Rectifying an Age-Old Problem

Mix Blog: Ampex 351 Resurrection, The Sequel — Part 2: Rectifying an Age-Old Problem

The original selenium rectifier in Dinosaur Two, aka the Ampex 351. Don’t pass up Part 1! After a few tweaks to bring the power connection in the Ampex 351 up to modern AC standards, my refurb of a second Ampex 351 electronics module continues… An issue that plagues these aged beasties is that the power supply includes a selenium rectifier. As documented in Resurrecting an Audio Dinosaur, Part 2, selenium rectifiers—which were fairly common in e…