11
RECOMMENDED ENCLOSURES
Please note that these enclosure volume recommendations are for the internal airspace inside the enclo-
sure and include the displacement of the subwoofer and ports. When choosing your enclosure type, please
pay close attention to your specific woofer, failing to use the correct enclosure may result in lower power
handling and poor sound quality.
To calculate the internal airspace required, take the internal
dimensions of the box. First multiple these number by themselves and then divide this sum by
1728. (W x H x D) / 1728.
Please contact your authorized PowerBass Autsound dealer for other designs
and specifications.
(Even though these subwoofers can be used in a ported enclosure, PowerBass
recommends a sealed enclosure for optimum performance and sound quality.)
M-104
Optimum Sealed Vol.
Standard
Metric
Gross Vb Internal
0.75 cu.ft
21.24Liters
F3 (-3dB Cutoff)
48Hz
48Hz
Poly-Fill
Yes
Yes
Qtc
.83
.83
Pe (Watts-Rms)
100-325 Watts
100-325 Watts
Acceptable Volumes
(.5-1.3 cu. ft)
(14.16-37.51 Liters)
Optimum Ported Vol.
Standard
Metric
Gross Vb Internal
1.25 cu.ft
35.4 Liters
Circular Port
3” x 10.5” D
7.62cm x 26.67cm D
Fb (Box Tuning)
35Hz
35Hz
F3 (-3dB Cutoff)
33Hz
33Hz
Pe (Watts-Rms)
100-325 Watts
100-325 Watts
Subsonic Filter Setting If Applicable
33Hz
33Hz
