What are your opinions of DSP's for speakers

I am going to go against the grain here. I do have the Legacy Audio Focus XD's with the Wavelet II DSP. I use it as my preamp fed by my Terminator 15th DAC. I have a dedicated 14 x 18 x 6.5 room. (Low ceiling) with a massive amount of room treatment, dedicated AC lines, the whole ball of wax. The Boehmer room correction is simple to use and does a dramatic job, especially with bass control. You can turn the DSP on and off using the software either on a cell or laptop with the click of a mouse. The difference is not subtle! Maybe it's not the answer for everyone, but Bill from Legacy Audio is onto something in his design of Masters Collection Speaker line. Speaker plate amps are modular if they fail and can be replaced if that ever happens. The processor can be sent in for repairs like any other component. I am getting fantastic sound in my medium modest system. I also use a HD Plex LPS for the Wavelet and just ordered a Revelation Audio Labs ambilocal cable for it. So for me it works very well, for others maybe not.

@fthompson251 Thanks for your feedback. I just listened to the Legacy Focus SE with Wavelet II at AXPONA and it was impressive. I'm not really wanting to substitute my existing preamp and DAC for the wavelet though and that's another reason for my hesitation with the technology. I am interested in the SE version or possibly the XD version, but I need more information on them. Thanks for your opinion on this. I want to hear both sides.

@ghdprentice Mic drop! One of the most simplistic, coherent, sensical, and best replies I have seen! Makes 100% total sense👍🏻

I haven't read all the posts here but will add my two cents FWIW.

I spent a good 2.5 hours of serious seat-time A/B auditioning a pair of GoldenEar Triton 2+ and a pair of Martin Logan Motion 60xti speakers, using a Simaudio Moon Neo 340 IX, a Marantz CD player and some CDs I brought for this audition.  I was told the Tritons had about 20 hours break-in time on them and the ML around 30 or 40.  Both of these speakers performed spectacularly, as far as my (and my friend's) ears were concerned.  My friend and I, both, loved both of these speakers, a lot!  However, in the end we both gave the ever so slight nod to the ML.  Although I loved the GE and would have been plenty happy with them in the right room, their sound signature was something I still can't quite put my finger on or describe any better than this:  it was like they did everything super right, reproduced every instrument's sound correctly and faithfully but somehow didn't mix all of that up into one cohesive or mixed musical reproduction.  I'm sure there's a word or term for that in the audiophile's lexicon but damn if I know what it is.  I kept telling my friend they lacked "fill".  That's the term I used for not being able to put everything together.  Remember!  I'm still splitting hairs here!  Don't know if the built-in Class D subs had anything to do with this or maybe lack of break-in, component matching issues, etc. but they were just lacking "fill".  The other thing I was and am wary about when it comes to powered speakers like this is the fact that they need to be plugged into an electrical outlet and probably individual outlets of their own.  Maybe that doesn't matter but the last thing I need is more wires & cables behind my rack or more circuit breakers, power conditioners, etc.!

Depends on your room and your system. My system is open baffle and subwoofer based. Thus some sort of crossover is required. Initially the was done with plate amps on the subwoofer. Now using a Dayton Audio DSP-408. It's inexpensive, so I imagine there's some SQ degregation. However, being able to cater settings like HP filters, LP filter, delay, and EQ resulted in substantial improvement. I'm pleasantly surprised. I would try a DSP unit from a vendor that is returnable. Play with it for a while and let your ears judge.