[Hallicrafters] audio output transformer

Tom Lewis n4tl2 at yahoo.com
Wed Mar 5 13:56:29 EST 2014


Everyone, 
 
I have replaced the audio output transformer on a number
of radios. I just finished a Hallicrafters S-41W and used A Bogen BOT725. I was
surprised to find it at B&H photo. Their shipping costs are reasonable.
Here is some information on three audio transformers I have used. I used the
$17.95 one before I found the other two.  I used the 15 watt one tomatch 600 a ohm audio output to a
3.2 ohm speaker.
 
Audio matching transformers
4 watt for $5.87. B&H photo, NYC, Bogen
Communications BOT725
15 watts for $6.25. Parts Express part number 300-039
8 watts for $17.95. AES universal output transformer,
P-T291

73 Tom, N4TL


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