Hello I’ve got an emphaser El10S3 Woofer. and I’m just about to calculate a bass reflex box… You should have 35l (does the volume??) and a bass reflex tube with 8cm diameter and a length of 30.6cm. The TSP of the chassis are:FS:35,5Hz ; Vas:31,6l ; Mms: 106,8g ; Qts: 0,37 ; Qes: 0,4 ; Qms:5,0 ; R(DC) 3,9Ohm ; Sd 346 cm2 ; Xmax 8,3. Can you calculate this quickly and see if this is working properly!!!! You can also use a bass reflex channel! the shape (round or corner) doesn’t matter, does it? as long as the cross-section remains the same? What do I have to keep in mind when building the box? Thank you! cya AX rules!!!!!!!!!!!!!!!!! 😉