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.)
L-1004D
Optimum Sealed Vol.
Standard
Metric
Gross Vb Internal
0.75 cu.ft
21.24 Liters
Fc, (resonance frequency of of the
closed box system)
52Hz
52Hz
F3 (-3dB Cutoff)
48Hz
48Hz
External Dimensions of the enclo-
sure W x H x D, 3/4" (19mm) MDF
14 x 13.5 x 10.25 inch
35.6 x 34.3 x 26 cm
Qtc
0.67
0.67
Pe (Watts-Rms)
100-350 Watts
100-350 Watts
Acceptable Volumes
0.5 - 1.25 cu. ft
14.16-35.4 Liters
Optimum Ported Vol.
Standard
Metric
Gross Vb Internal
1.25 cu.ft
35.4 Liters
External Dimensions of the enclo-
sure W x H x D, 3/4" (19mm) MDF
13 x 15 x 17 inch
33 x 38.1 x 43.2 cm
Slot Port Opening W x H
11.5 x 1.5 inch
29.2 x 3.8 inch
Slot Port Length
24 inch
60.9 cm
Fb (Box Tuning)
38Hz
38Hz
F3 (-3dB Cutoff)
42Hz
42Hz
Pe (Watts-Rms)
100-350 Watts
100-350 Watts
Subsonic Filter Setting If Applicable
42Hz
42Hz
