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NuTone Intercom Photo Gallery > NuTone Model 2561 - 2562 AM FM Radio Intercom > NuTone Model 2561 2562 output transistors

NuTone Model 2561 2562 output transistors

There are only a few models of NuTone radio intercoms that use large TO3 Power output transistors.  These are Germanium transistors and actually have a maximum power output of 90 watts.

The 2561 does not operate any where near 90 watts, which is why these transistors rarely fail.  If they do need to be replaced, they should be replaced in matched pairs.