2 way speakers that sounds similar to kef ls50

hi, i have a budget of 600$ for the drivers to built something that goes really close to the kef, i like warm sounds and if you have anything to advise me...


Check out Madisound's Seas Loki III kit.  I heard it years ago at an audio show and it struck me as a very nice sounding speaker.  I am not sure if they still offer cabinets for this or not but it looks like an easy build.