Spearker Cabinets that I designed and I use at home

Eminence Delta 15-A and Selenium (JBL) ST-200 combination Cabinet+LP shelf (tuned for f3=45 Hz cut off frequency 3kHz 2nd order butterworth filters)

2 way system 2nd order butterworth filter design. quiet simple

Dayton PA130-8, Dayton DCS 165-4 and Tymphany XT25SC90-4 combination tower and bookshelf cabinets book shelf speakers does not have subwoofer drives and cabinets are tuned for f3=75hz and cutoof frequency for the speakers are 5kHz 2nd order butterworth, tower cabinets have subwoofer drives with 120 Hz 2nd order butterworth low pass tuned for f3=38 Hz and fullrange drives are tuned for f3=118 Hz with a 2nd order butterworth bandpass 120Hz-5kHz and trebles have 5kHz highpass 2nd order butterworth cabinets need still development electronic wise but they look okay by the looks