Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Stuff4bikes on January 19, 2022, 01:50:06 am
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What do these numbers mean on the primary side......
I have no info, came in a box from an estate sale...
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Generic 100V Line transformer used for distribution of audio in large buildings/Factories etc.
(Important component of large installation of PA and Emergency warning infrastructure allowing low losses over long fig 8 cable.)
Rated at 10 Watts max, with opportunity to change taps to drive 8R (nominal) speaker at 10W or 5W or 2.5W etc.
Some folk use them as a poor mans Push-Pull output transformer but you'd be better guided by someone who has experience.
Usually limited LF frequency response as its tailored to voice freq with a "little top" for emergency signals.