Parameters Box Parameters
Model # AMV105M AMV125M
Ported
Air Space (Cu. Ft.) 0.625 1.3
Port Size (Inches) 2 x 6.75 3 x 7.75
Port Vel. (%) 31.5 21
-3dB (Hz) 36.5 35
Tune Freq. (Hz) 40 38
Sub Disp. (Cu. Ft.) 0.1 0.15
Port Disp.(Cu. Ft.) 0.011 0.028
Total Vol. (Cu. Ft.) 0.75 1.5
Ported
Air Space (Cu. Ft.) 1.3 2.25
Port Size (Inches) 3 x 8.0 4 x 8.5
Port Vel. (%) 15 12.5
-3dB (Hz) 30.5 30
Tune Freq. (Hz) 37 37
Sub Disp. (Cu. Ft.) 0.1 0.15
Port Disp.(Cu. Ft.) 0.029 0.055
Total Vol. (Cu. Ft.) 1.5 2.5
Ported
Air Space (Cu. Ft.) 2.33 3.2
Port Size (Inches) 4 x 8 (2) 4 x 10.5
Port Vel. (%) 8.75 6.5
-3dB (Hz) 29.5 29
Tune Freq. (Hz) 36 38
Sub Disp. (Cu. Ft.) 0.1 0.15
Port Disp.(Cu. Ft.) 0.053 0.141
Total Vol. (Cu. Ft.) 2.5 3.5
EBP 61 49
Model #
Sealed
Minimum (Cu. Ft.) 0.5 0.75
Maximum (Cu. Ft.) 1.25 2
SPL (dB) 85 88
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.
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.
All sealed boxes already include the displacement for the subwoofer. NR = (Not Recommended)
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.
Space Saver Bass Design
Everyday Bass Performer
Ultimate SPL Bass Box (Not Designed for Competition)
AUDIOBAHN UNIVERSAL SUBWOOFERS
