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RE: Crossover upgrade for Tympani IVa

Andy, is it not the electrical response of the crossover you show us? I think you have forgotten the series resistor for the 2 Ohm ribbon tweeter. If you run without it, there will be an increased level of the tweeter and it may also be hard for some power amplifiers to drive that load.

Please note, that if you separate the two coils, it will change the transfer characteristic somewhat.

The acoustic response is more linear, see below. I think the peak around 1 kHz need to be tweaked.







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