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Box Parameters
8
Model # AW831T AW1051T AW1251T AW1571T
Ported
Air Space (Cu. Ft.) 0.7 0.65 1.3 1.7
PortSize(Inches) 2x6.1 2x6.5 3x6.75 3x7
Port Vel. (%) 12.77 33.45 27.15 28.15
-3dB (Hz) 36 40 44 40
Tune Freq. (Hz) 40 40 40 35
Sub Disp. (Cu. Ft.) 0.08 0.1 0.15 0.21
Port Disp.(Cu. Ft.) 0.009 0.01 0.024 0.025
Total Vol. (Cu. Ft.) 0.75 0.75 1.5 2
Ported
Air Space (Cu. Ft.) 1.15 1.4 2.3 2.65
PortSize(Inches) 3x9 3x6.75 4x9 4x7.5
Port Vel. (%) 6.26 16.75 14.18 16.74
-3dB (Hz) 33 31 35 35
Tune Freq. (Hz) 38 39 35 35
Sub Disp. (Cu. Ft.) 0.08 0.1 0.15 0.21
Port Disp.(Cu. Ft.) 0.033 0.024 0.06 0.048
Total Vol. (Cu. Ft.) 1.25 1.5 2.5 3
Ported
Air Space (Cu. Ft.) 1.9 2.4 3.15 3.55
PortSize(Inches) 3x5.75 4x6.8 (2)4x12 (2)4x11.25
Port Vel. (%) 5.81 9.96 7.56 8.69
-3dB (Hz) 30 30 30 31.5
Tune Freq. (Hz) 35 39 36 35
Sub Disp. (Cu. Ft.) 0.08 0.1 0.15 0.21
Port Disp.(Cu. Ft.) 0.02 0.04 0.166 0.152
Total Vol. (Cu. Ft.) 2 2.5 3.5 4
EBP
96 44 42 51
Model #
AW831T AW1051T AW1251T AW1571T
Sealed
Minimum (Cu. Ft.) 0.25 0.75 1 1.25
Maximum(Cu.Ft.)1223.5
SPL (dB) 84.5 83.8 88 89.2
All sealed boxes already include the displacment for the subwoofer. NR = (Not Re commended)
Audiobahn Box Specifications
Remember to build your box to the total volume, not just air space, as total volume includes all displacement.
An EBP of less then 45 is SUGGESTED for only a sealed box and greater then 65 for a ported box.
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 frequencythe sub will play, and the more power it will handle.
All ports listed are circle ports unless otherwise stated. Surface area of a circle port = (3.14) X (radius) (squared)
Everyday Bass Performer
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.
Ultimate SPL Bass Box
(not designed for competition use)