I own a set of CV! SL-15. They are big box 15" 3-way speakers. For fun I decided to redo the crossover. I just did a mirror image 2nd order with much higher quality parts, using Danny's point to point method. Tweet Z cap supirior 16 ga air core Litz wire Mid Clarity CSA 16 ga air core BASS Audyn Q4 14 ga laminated All 14 ga OFC wire to drivers. About $300 into $1000 speakers hoping for $50 in improvement. Lol.