Author Topic: Western Electric 532 Hearing Hearing Impaired  (Read 274 times)

Offline Doug Rose

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Western Electric 532 Hearing Hearing Impaired
« on: September 09, 2021, 07:10:30 AM »
This was covered in brown goo that was still sticky. Yuck!

All Dates Match 3 58 except caps and elements that are 2 58...Doug
Kidphone

Offline Vern P

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Re: Western Electric 532 Hearing Hearing Impaired
« Reply #1 on: September 11, 2021, 02:51:20 AM »
Nice find, I got a pink one from the old JKL in a trade, also found a nice clean yellow in Las Vegas, NV. Traded it off.

Offline countryman

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Re: Western Electric 532 Hearing Hearing Impaired
« Reply #2 on: September 11, 2021, 03:59:21 AM »
Cleaned up nicely :-)
I've looked up the model on http://www.paul-f.com/we500typ.htm and a 151A amplifier is mentioned. Was this already a transistorized "real" amplifier or did it use passive, but more efficient components?
1958 is early for a consumer transistor application.

Offline paul-f

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Re: Western Electric 532 Hearing Hearing Impaired
« Reply #3 on: September 11, 2021, 03:15:35 PM »
... Was this already a transistorized "real" amplifier or did it use passive, but more efficient components?
1958 is early for a consumer transistor application.

Transistorized.

Read about it in Bell Laboratories Record articles:
https://www.telephonecollectors.info/index.php/search?q=blr+532

There's also some background on the evolution of amplified 500-type sets in my July 2009 Singing Wires article, CAN YOU HEAR ME NOW? Early Western Electric 500 Amplified Sets.
Visit: paul-f.com         WE  500  Design_Line

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Offline countryman

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Re: Western Electric 532 Hearing Hearing Impaired
« Reply #4 on: September 12, 2021, 02:42:47 AM »
Thanks Paul, another astonishing innovation out of the Bell Laboratories, and well documented even with a circuit diagram!