The 2 that come to mind are the sae 4000 (ADS recomended) and pioneer sf850.
Today, many folks go by way of the plethora of avail DSP for ease of use.
The C-2000 used for the 30 series ADS really is not the ideal ticket for the 910 though. Though i have biamped the 1290,1590, and 2030, when i did the 910 I did not use an active xover. I used full range on the top as its handled by the passive, and i used a professional amp (Crown) with built in DSP for the low end. In the end, i began to run just gobs of power in standard mode.
Ive had 10 or so pair of 910, and have developed mods for the umbilical cord to eliminate driver dropout. If you dont know what im refering to, you will. The mod was a marked improvement in itself. Took some time, and very little cost. Good times ahead on your venture, its a fun one.
So long as you stay within a certain freq range, you can play around a little with what sounds good to you. 500hz@ 12db is a great place to start. (If memory serves)
Welcome to the club!
Edit: what i do to the xover is pull the plug off of it. I add a pigtail soldered to the board, and secured via the nut for the woofer inductor. (Eliminates stress by the plug on the board) that pigtail has a quality Molex plug on it. In the end, the crossovers have a much more secure plug, which has a bit longer lead and does not stress the board.
To hook wires to the xover, (in full range) lay something on the speaker. Place xover up there, and ensure ALL 3 GROUND screws are PRESENT and tight. There are 3 ground screws with the strap (bus bar) one for each. Hook to any one, but be sure they are all there, (the screws) and all tight. Otherwise one portion (woofer, mid, tweet) will have a poor connection (ground) In biamp mode, this will be a bit different.
Also, check all 6 fuses. (3 in each xover) maker sure they are all the correct value, or smaller (a little). Many times these get replaced or switched around. Ive seen 5amp fuses in the tweeter. 10amp ect...tin foil...oh my. May as well clean the switches while you are mucking about as they are known to be spotty. Speaking of fuses and incorrect replacements, i always check my mids and tweets. Maybe for you, some time down the road if there is evidence of removal. Evidence being, pry marks about the parimater of drivers. Sooo many ive had did gave incorrect tweeters. Mids were not as common. But then, im a bit anal. No evidence, i leave well enough alone.