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RE: 3.3 balance

The 3.3 have a U shaped FR from middle of the midrange to the lower treble and then have a gradually elevated upper end lower mids but not quite down to midbass. By tamping down the tweeter and raising the XO up in freq. you undid the U shaped FR. You rebalanced the speaker.

The real solution is to redo the internal XO to the prior IIIa values with perhaps a few tweaks. Davy (UK) is trying this out on and off and should have useful values for a safe and useful redo of this XO. He has done some work he reported on a few years back about 1st order slope XOs, but the drivers are not entirely happy with that, so playback volumes become limited. When he is done these new values should allow full volume and solve the upper mid- low treble dip. I don't know when he will be done.

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