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RE: Tracktrix Horn Upgrades




Hi Fred,
Each case is likely different, depending on the directivity of both devices, relative positioning, and for passive crossovers the response and impedance of the devices. I usually use digital crossovers and play with the slopes and crossover points in software to get the best match I can find in the combined polar response. For my current system, for the midbass (15") to midrange horn crossover, I found a 6th order Linkwitz-Riley HP at 770Hz for the midrange and 550Hz 6th order LR LP on the midwoofer worked best. Those don't sum to flat, so there was additional eq applied to both drivers to get the final acoustic slope which ends up being a non-text book curve. I attached a screenshot - the solid curves are the initial slopes I used, and the dashed curves are with eq applied to get a flat response.

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