Thursday, July 21, 2011

Western Electric Company No.91-A

The 91-A is possibly the most copied WE amplifier. This amplifier started production around 1929. The fact that it is still being made and modified today says volumes about their engineering feats. I am curious how this amplifier works in todays world. It would seem to me the bandwidth would be somewhat limited by todays standards. From you guys who are familiar with this amplifier I would love to hear your opinions.

This post originated at retro vintage modern hi-fi


  1. I'm afraid you're wrong about that. Recording has never been the problem. Even in 1927 it was possible to record to at least 10,000 Khz or above. And When RCA came out with their marvelous Photophone microphones in 1931 they limited them to 15K. Amps were able to do much more, the big problem was that most people at home still had a wind-up or some kind of battery radio that simply couldn't reproduce the quality. Just listen to some of the restored sound tracks of 1930s movies and hear whar was possible in those days.
    Modern microphones are much less prone to distance, plops etc. But for recording, almost any serious studio still uses those 'old' things. Because they can't be bettered.

  2. I don't mind being wrong but that is why I was asking :)

    Thank you so much for the input.


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