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It was designed by [[Ron Olson]] with help from [[Phil Crosby]]. | It was designed by [[Ron Olson]] with help from [[Phil Crosby]]. | ||
Regarding Type J development, Phil Crosby recalls: | Regarding Type J development with Ron Olson, Phil Crosby recalls: | ||
<blockquote> | <blockquote> | ||
I was helping him to pursue parasitic oscillations | I was helping him to pursue parasitic oscillations (we used to call it "bird hunting"). | ||
It was common to say when an amplifier had a parasitic oscillation to say that it "sung". | It was common to say when an amplifier had a parasitic oscillation to say that it "sung". | ||
At one point I was peering closely at a J unit prototype while Ron was probing it and a finger on his left hand touched the +225. | At one point I was peering closely at a J unit prototype while Ron was probing it and a finger on his left hand touched the +225. | ||