[ProAudio] Western Electric 111C transformers

[Scott Dorsey]

> I'd hate to see the phase shift....

It wasn't as bad as you'd think since the frequency-dependent loss of the
lines was minimum phase and so would be corrected by a minimum-phase 
equalizer that flattened the frequency response.  Not super important for
radio broadcast, but critical for multiplexed teletype circuits.  There
is, yes, a paper in the BSTJ about this.
--scott