can a round pvc port have a 90 degree elbow attached to make the port look like and L in the case of the port being too long for the box? if so does anyone know how to calculate the area for the elbow part?
yes you can, just measure down the middle or the curve for port length. as for displacement... idk id just ifnd the total length and calculate the Volume. it wont be off enough to make a noticeable difference