Building a Hushbox (Alternate Solution)

In Fig. 11 & 12 you can see the detail of the arc structure in the bottom part of the hushbox.

Figure 11

Figure 12

In Fig. 13 & 14 you can see the chassis on which the 120 mm fans will be installed. These chassis have been built from scrap sheets of steel. They have been cut and bent in order to provide a conical air inlet/outlet for the fans. This designs provides a slower inlet/outlet air speed, therefore decreasing aerodynamic noise.

Figure 13

Figure 14