Frequency:  F3= 37Hz -3dB with 1 box, 33Hz -3dB with 4 boxes and  30Hz -3dB with 8 boxes..jpg)
 
 Efficiency: 1box 1w1m 2Pi (2.83volts) = 102db,4 boxes 1w/1m 2Pi (1.41volts) = 106.5dB
 
 Enclosure Type: Tapped Horn
 
 Size: 111x87x60cm 
Recommended driver:  LF18N401 Spec Sheet ,  Kappalite-3015lf
 
 Response:

 
 Group delay:

 
 Plan: MTH-4654

Artwork by Job63 on http://hornplans.free.fr:

 Designer: 
 
                         








 
            