Low pass crossover setting & slope for Kappa 9?


I have a pair of Infinity Kappa9 speakers and need to buy a preset module for my AR EC22 crossover. I do know, that the Kappa9 spec sheet shows 80hz but that seems low for an external crossover and the specs do not show the slope speed, 12, 18 etc. I can obtain a 90hz with slope of 12 but not sure if this would be ok? I would like to know the exact setting and slope if possible. Thanks
Preamp- Audio Research SP10
Top end amp - Audio Research Classic 60
Low End Amp - Threshold S500
Speakers - Infinity Kappa 9
Crossover - Audio Research Ec 22
denniscleo

Showing 1 response by afc

Might be a dumb question, but why do you need an active crossover? The way these are set up, if you remove the metal insert between the twin binding posts, you eliminate the
crossover at 80 Hz....you drive the woofers with the low end amp and the mid-bass and up with the high end amp. Worked well for me with an Aragon 2004 MkII for the bottom and an ARC D-130 for the top. Sounded good, but I still didn't have enough current to drive the damn things. Infinity told me that at high loads, total resistance can dip below 1 ohm. That's a load that requires an amp with some serious current. Kept blowing fuses on the Aragon, and the D-130- admittedly not ARC's finest piece of work by a longshot- kept going into protect mode after prolonged listening. What exactly will an active crossover add?