Box Parameters
Audiobahn Box Specifications
All ports listed are circle ports unless otherwise stated. Surface area of a circle port = (3.14) X (radius) (squared)
Remember to build your box to the total volume, not just air space, as total volume includes all displacement.
Model #
AW831T
AW1051T
AW1251T
AW1571T
Air Space (Cu. Ft.)
Port Size (Inches)
0.7
2 x 6.1
12.77
36
0.65
2 x 6.5
33.45
40
1.3
3 x 6.75
27.15
44
1.7
3 x 7
28.15
40
Port Vel.
-3dB
(%)
(Hz)
Tune Freq. (Hz)
Sub Disp. (Cu. Ft.)
Port Disp.(Cu. Ft.)
Total Vol. (Cu. Ft.)
40
40
40
35
0.08
0.009
0.75
0.1
0.15
0.024
1.5
0.21
0.025
2
0.01
0.75
Everyday Bass Performer
Air Space (Cu. Ft.)
Port Size (Inches)
1.15
3 x 9
6.26
33
1.4
3 x 6.75
16.75
31
2.3
4 x 9
14.18
35
2.65
4 x 7.5
16.74
35
Port Vel.
-3dB
(%)
(Hz)
Tune Freq. (Hz)
Sub Disp. (Cu. Ft.)
Port Disp.(Cu. Ft.)
Total Vol. (Cu. Ft.)
38
39
35
35
0.08
0.033
1.25
0.1
0.15
0.06
2.5
0.21
0.048
3
0.024
1.5
Ultimate SPL Bass Box
(not designed for competition use)
Air Space (Cu. Ft.)
Port Size (Inches)
1.9
3 x 5.75
5.81
30
2.4
4 x 6.8
9.96
30
3.15
(2) 4 x 12
7.56
3.55
(2) 4 x 11.25
8.69
Port Vel.
-3dB
(%)
(Hz)
30
31.5
Tune Freq. (Hz)
Sub Disp. (Cu. Ft.)
Port Disp.(Cu. Ft.)
Total Vol. (Cu. Ft.)
35
39
36
35
0.08
0.02
2
0.1
0.15
0.21
0.04
2.5
0.166
3.5
0.152
4
A port velocity of 20% or under is good for everday use and 5% or under for SPL competition . Port velocity
translates to port noise, so the lower the number, the less port noise you will incur.
An EBP of less then 45 is SUGGESTED for only a sealed box and greater then 65 for a ported box.
EBP
96
44
42
51
The larger a sealed box is, the lower the sub will play, but the less power it will handle. The smaller a sealed box is,
the higher the frequency the sub will play, and the more power it will handle.
Model #
AW831T
AW1051T
AW1251T
AW1571T
Sealed
Minimum (Cu. Ft.)
Maximum (Cu. Ft.)
0.25
1
0.75
2
1
2
1.25
3.5
SPL
(dB)
All sealed boxes already include the displacment for the subwoofer. NR = (Not Recommended)
84.5
83.8
88
89.2
8
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