anyone bi amp a pair of ess amt1d active xo ?

What slope are you using? What are the passive crossover specs for that model?

The Rane xo has a 24bd slope.
I have tried to get specs from Ricky at ESS but no deal!
The ESS crossover has the heil at 800hz.

thanks for the response!!

The slope may be to steep. I'm not familiar with the Rane other than i have seen a picture. I would say your ESS would have a slope at 12db/octave and the slope would finish around 800hz not begin at 800hz
The woofer would also phase out completely around 800hz at 12db. You may need to start your slopes around 650-700hz for a smoother transition at 12db

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