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PinnaStudios 9th June 2006 02:52 PM

RCA 74B Transformer Question
Hi there,

I have 2 RCA74B's, one of which has an impedence of 600ohms, and the other 175Kohms. I'm wondering whether this is simply wired up on the wrong terminals of the transformer and can be altered to roughly 600ohms (or 250 as is stated in the original RCA spec) or whether this model is one designed specifically for PA use and therefore has a different Impedance rating on the transformer altogether.


mbrebes 9th June 2006 09:51 PM

I am pretty sure that the output impedance can be selected internally on the 74B's.