That's funny - I am doing a biamp on my AMT 1Cs with that same crossover - Rane AC22. My amps are a Pioneer for the tweeters, and a Crown for the woofers.
Like you, I am also using a modern receiver for the pre-pro. In my case, a Denon 3808CI. What I did, with great results, was to the bias the crossover in favor of the woofers slightly to make sure the bass isn't lost, and then run Audyssey, which does a fantastic job of correcting the frequency response irregularities of the drivers, which the original crossovers took care of.
In your case, that's tough because you are trying to side by side them, which I can understand. But I found the results excellent. I am also using Audyssey XT, like your Integra.
Let me know what you think!
IBJamon
Like you, I am also using a modern receiver for the pre-pro. In my case, a Denon 3808CI. What I did, with great results, was to the bias the crossover in favor of the woofers slightly to make sure the bass isn't lost, and then run Audyssey, which does a fantastic job of correcting the frequency response irregularities of the drivers, which the original crossovers took care of.
In your case, that's tough because you are trying to side by side them, which I can understand. But I found the results excellent. I am also using Audyssey XT, like your Integra.
Let me know what you think!
IBJamon