Interesting (and to me rather familiar) rundown on your audio setup, mahlman. All-horn, -active, DIY, inclusion of pro audio products, letting size have its say, PC-based source - hear you loud and clear. One senses the vitriol from some of the comments, because this - all of it, actually - rubs audiophilia quite the wrong way. And that’s how it should be, apparently.
It’s great that you’re able to maintain a 2-way speaker system running from ~25Hz to ~18kHz and a sensitivity across the board no lower than 105dB’s, it seems. Something tells though the bass horn is at its limits in the upper range crossing over to the K-402? The K-1132 apparently isn’t all too different compared to the EV DH1A (used in my main speakers).
My own speaker system is 3-way - that is, 2-way pro cinema Electro-Voice TS9040D LX speakers, run actively through a Xilica XP-3060 (same as yours) with a Belles SA-30 for the HP9040 horn + DH1A compression driver and a Lab.gruppen FP6400 for the ported dual 15" drivers. A Crown K2 runs a pair of DIY MicroWrecker 20 cf. tapped horns fitted with a 15" B&C unit in each, augmenting the EV’s from just below 85Hz down to 20-25Hz. Total output power sits at ~2.5kW per channel (the EV bass section sums into 4 ohm). Slopes across the range are 36dB/octave Linkwitz-Riley, though the high-pass on the MW subs at 20Hz uses a Butterworth slope style. I'm implementing 5 PEQ’s on the EV horn section (4 subtle notches and 1 peak suppression). The rest of the bandwidth is run sans PEQ.
What really makes a difference here, and where I find 3-way to be worthwhile, is high-passing the EV bass section at ~85Hz crossing over to the TH subs, which "sets them free" with a cleaner and more agile/expressive imprinting - it adds a bucket of headroom in this vital region. The DH1A is a monster, a sledgehammer in velvet gloves, and is crossed with the HP9040 at just over 600Hz. The TH subs are wholly effortless, smooth and quite visceral, and integrates tremendously well with the EV’s.
I use a PC source as well in the shape of a DIY music/HT server with a Marian Seraph D4 AES/EBU digital output interface to feed my DAC/preamp via a balanced Mundorf silver/gold digital cable.
I find it’s great that you’re using the system you do, actively and all and with the priorities you’ve made. I may end up with all-horn again (been there), but for now I’m very pleased with where I’m at. An important trait with the EV’s is their physical height of just over 6’ with the acoustic center sitting between the lower horn edge and upper edge of the EV bass cab. It’s an unrestricted sphere-like presentation that fills the room effortlessly, not unlike a large panel speaker (but with much better macro dynamics). A future upgrade may present itself with a pair of DIY high-order bandpass subs fitted with 21" pro neodymium woofers. They extend higher and cleaner in the upper band compared to my TH’s, and thus may further clean up the upper bass/lower midrange (the MW’s are run at their max upper ceiling). Fun stuff.