I had one of the early deqx units pdc 2.6, bought it ex demo £600 and sold it later for £700, a rare occasion where I didn't lose money. Great bit of kit. I now use Najda dsp, bought for future projects but used in my office set up as a Dac, very good Dac it has too.
I have some behringer analogue crossovers you could try, one is a 3 way the other a 2 way. I used them early on in my horn build. Easy to use, just twiddle the knobs to the desired crossover point.
Bakoon 13r Denon DP80 Stax UA-70 Shure Ultra 500 in a Martin Bastin body with jico stylus, project ds2 digital Rullit aero 8 field coils in tqwt speakers
Office system, DIY CSS fullrange speakers with aurum cantus G2 ribbons yulong dac Sony STR6055 receiver Jvc QL-A51 direct drive turntable, Leema sub. JVC Z4S cart is in the house
Garage system another Sony receiver, cassette deck
System components are subject to change without warning and at the discretion of the owner.