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Original Message

RE: This is hypothetical...,

Posted by KIS on May 10, 2012 at 15:07:20:
The two transformers are definitely some form of EQ.

The bass transformer is wound with very thick wires and when they are played full range to drive the whole Soundlab panel, the natural roll of is around the 500 Hz (my ears tell me). There is no highs what so ever.

The mixer does the rest of the EQ work by bring in another transformer to perform the high frequency work.

The above is quite smartly done by obviously varying the turn ratio to give a balance sound.

Without EQ, direct drive amps straight onto the panels would only yield sound without much bass. Similar to vinyl without RIAA.