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I have an American Bass HD 15 dual 1 arriving shortly. Finding information about them is difficult to say the least. I have read, however, that the SoundQubed HDC3 is very similar.
I have also found many forum posts stating that SQ HDC3s like a lot of port area. I was wondering if the same holds up for the AB HD?
I made these box designs under that assumption. Maybe someone has some experience with them and could tell me how the think the HD will perform under these conditions. I haven't yet decided which frequency I will tune the box so I have included all three designs and numbers.
Box Volume: 4.5 Ft3 (4.5 cubes)
Port Recommendations: 15” – 16” inches of port per cubic foot of volume.
4.5 Ft3 x 15” = 67.5 ft2 (square inches)
I assumed that 66 ft2 is sufficient (16.5” x 4” = 66)
Port Dimensions:
34hz @ 4.5 Ft3: 16.5” x 4” x 26.5” (MobileInformationLabs.com: 25.5,” the12volt.com: 27.5”)
33hz @ 4.5 Ft3: 16.5” x 4” x 28.5” (MIL.com: 27.5,” 12V.com: 29.5)
32hz @ 4.5 Ft3: 16.5” x 4” x 31” (MIL.com: 30,” 12V.com: 32)
Port Volume:
34hz: 16.5” x 4” x 26.5” = 1.012 Ft3
33hz: 16.5” x 4” x 28.5” = 1.09 Ft3
32hz: 16.5” x 4” x 31” = 1.18 Ft3
Port Material Displacement:
34hz: 16.5” x .75” x 26.5” = 0.19 Ft3
33hz: 16.5” x .75” x 28.5” = 0.20 Ft3
32hz: 16.5” x .75” x 31” = 0.22 Ft3
Bracing: 2 x 4 actual dimensions 1.6” x 2.6”
Top-to-Bottom: 16.5” x 1.6” x 2.6” = 0.04 Ft3
Side wall to Port: 26.75” x 1.6” x 2.6” = 0.06 Ft3
Front-to-Back: 20.5” x 1.6” x 2.6” = 0.05 Ft3
Total Bracing Volume: 0.04 Ft3 + 0.06 Ft3 + 0.05 Ft3 = 0.15 Ft3
Dual Baffle Driver Displacement:
Effective Diameter: 13.9” x π: 3.16” x Dual Std. Disp. 0.23 Ft3: 1.5” = 0.04 Ft3
Std. Disp. 0.23 Ft3 - 0.04 Ft3 = 0.19 Ft3
Total Required Volume:
34hz: Port Vol. 1.012 Ft3 + Port Material Vol. 0.19 Ft3 + Bracing Disp. 0.15 Ft3 + Driver Disp. 0.19 Ft3 + Desired Volume: 4.5 Ft3 = 6.04 Ft3
33hz: Port Vol. 1.09 Ft3 + Port Material Vol. 0.20 Ft3 + Bracing Disp. 0.15 Ft3 + Driver Disp. 0.19 Ft3 + Desired Volume: 4.5 Ft3 = 6.13 Ft3
32hz: Port Vol. 1.18 Ft3 + Port Material Vol. 0.22 Ft3 + Bracing Disp. 0.15 Ft3 + Driver Disp. 0.19 Ft3 + Desired Volume: 4.5 Ft3 = 6.24 Ft3
Estimated Overall Box Dimensions:
Height: 18"
Depth: 22.5"
Width: 33"
I am leaning towards 33hz. How do you guys think it will perform considering these conditions?
I have also found many forum posts stating that SQ HDC3s like a lot of port area. I was wondering if the same holds up for the AB HD?
I made these box designs under that assumption. Maybe someone has some experience with them and could tell me how the think the HD will perform under these conditions. I haven't yet decided which frequency I will tune the box so I have included all three designs and numbers.
Box Volume: 4.5 Ft3 (4.5 cubes)
Port Recommendations: 15” – 16” inches of port per cubic foot of volume.
4.5 Ft3 x 15” = 67.5 ft2 (square inches)
I assumed that 66 ft2 is sufficient (16.5” x 4” = 66)
Port Dimensions:
34hz @ 4.5 Ft3: 16.5” x 4” x 26.5” (MobileInformationLabs.com: 25.5,” the12volt.com: 27.5”)
33hz @ 4.5 Ft3: 16.5” x 4” x 28.5” (MIL.com: 27.5,” 12V.com: 29.5)
32hz @ 4.5 Ft3: 16.5” x 4” x 31” (MIL.com: 30,” 12V.com: 32)
Port Volume:
34hz: 16.5” x 4” x 26.5” = 1.012 Ft3
33hz: 16.5” x 4” x 28.5” = 1.09 Ft3
32hz: 16.5” x 4” x 31” = 1.18 Ft3
Port Material Displacement:
34hz: 16.5” x .75” x 26.5” = 0.19 Ft3
33hz: 16.5” x .75” x 28.5” = 0.20 Ft3
32hz: 16.5” x .75” x 31” = 0.22 Ft3
Bracing: 2 x 4 actual dimensions 1.6” x 2.6”
Top-to-Bottom: 16.5” x 1.6” x 2.6” = 0.04 Ft3
Side wall to Port: 26.75” x 1.6” x 2.6” = 0.06 Ft3
Front-to-Back: 20.5” x 1.6” x 2.6” = 0.05 Ft3
Total Bracing Volume: 0.04 Ft3 + 0.06 Ft3 + 0.05 Ft3 = 0.15 Ft3
Dual Baffle Driver Displacement:
Effective Diameter: 13.9” x π: 3.16” x Dual Std. Disp. 0.23 Ft3: 1.5” = 0.04 Ft3
Std. Disp. 0.23 Ft3 - 0.04 Ft3 = 0.19 Ft3
Total Required Volume:
34hz: Port Vol. 1.012 Ft3 + Port Material Vol. 0.19 Ft3 + Bracing Disp. 0.15 Ft3 + Driver Disp. 0.19 Ft3 + Desired Volume: 4.5 Ft3 = 6.04 Ft3
33hz: Port Vol. 1.09 Ft3 + Port Material Vol. 0.20 Ft3 + Bracing Disp. 0.15 Ft3 + Driver Disp. 0.19 Ft3 + Desired Volume: 4.5 Ft3 = 6.13 Ft3
32hz: Port Vol. 1.18 Ft3 + Port Material Vol. 0.22 Ft3 + Bracing Disp. 0.15 Ft3 + Driver Disp. 0.19 Ft3 + Desired Volume: 4.5 Ft3 = 6.24 Ft3
Estimated Overall Box Dimensions:
Height: 18"
Depth: 22.5"
Width: 33"
I am leaning towards 33hz. How do you guys think it will perform considering these conditions?