This box was designed for a high school senior project about bass for home theater. Passive radiator
extends low frequency response dramatically, allows you to "tune" the mass of the "air" in the imaginary
"ports" by adding weight to the PR's. Since the PR's have mass, they also strongly influence the
building's structure, causing the entire room to shake with low bass, further influencing low frequency
extension, and  creating a rather scary situation where the whole house shakes. UNFORTUNITELY, this box
suffered from an INCURABLE rattle in the base, even 3/4" all thread with huge nuts and washers going from
the base to the middle crossbraces, wouldn't stop it. I was aided in construction by a furniture
construction wood shop that my family is friends of the owner - Woodworker insisted tacks and minimal
wood glue were sufficient, I knew otherwise and should have been more assertive. I have since emptied
the box, and thrown it off a 3rd story balcony onto concrete where it split into 4 pieces.
Icon  Name                                                             Last modified      Size  
[DIR] Parent Directory                                                                      -   
[DIR] highres_photos/                                                  12-Mar-2008 12:20    -   
[IMG] 1-Assembled.jpg                                                  12-Mar-2008 12:10  104K  
[IMG] 2-Assembled(trim).jpg                                            12-Mar-2008 12:10   27K  
[IMG] 3-Finishing.jpg                                                  12-Mar-2008 12:10   66K  
[IMG] 4-Finishing.jpg                                                  12-Mar-2008 12:10   57K  
[IMG] 5-Finishing(trim).jpg                                            12-Mar-2008 12:10  117K  
[IMG] 6-Box_Sub_PRs_&Tires.jpg                                         12-Mar-2008 12:11   71K  
[IMG] 7-Bracing.jpg                                                    12-Mar-2008 12:11   38K  
[IMG] 8-Testing_(UNC_Charlotte).jpg                                    12-Mar-2008 12:11   67K  
[IMG] PR15_&_Tumult.jpg                                                12-Mar-2008 12:11   73K  
[IMG] PR_Leak.jpg                                                      12-Mar-2008 12:11   37K  
[IMG] PR_broke.jpg                                                     12-Mar-2008 12:11   48K  
[IMG] PR_configuration.jpg                                             12-Mar-2008 12:11   68K  
[IMG] Plot_tumult_4Xpr-2.gif                                           12-Mar-2008 12:11   25K  
[IMG] Plot_tumult_4Xpr-3.gif                                           12-Mar-2008 12:11   25K  
[IMG] Plot_tumult_4Xpr-4.gif                                           12-Mar-2008 12:11   29K  
[IMG] Plot_tumult_4Xpr-5-Final_measurements.gif                        12-Mar-2008 12:11   33K  
[IMG] Plot_tumult_4Xpr.gif                                             12-Mar-2008 12:11   22K