12
PARAMETERS FOR POWERBASS MARINE SUBWOOFERS
(Due to Constant Improvements, Specifications and Parameters are subject to change without notice.)
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 dealer for other designs and specifications. (Even though these
subwoofers can be used in a vented enclosure, PowerBass recommends an infinite baffle chamber for
optimum performance and sound quality.)
XL-1040DMF
XL-1040MF
XL-1240DMF
XL-1240MF
VC Impedance (ohms)
4
Ω
+ 4
Ω
4
Ω
4
Ω
+ 4
Ω
4
Ω
Test Impedance (ohms)
1.65
3.51
1.61
3.46
Fs (Hz)
31.5
31.3
34.3
38.1
SD (sqCM)
363.1
363.05
510.7
510.71
Vas (Ltr)
34.89
35.04
46.09
37.35
Cms (µM/N)
187
188
125
101
Mms (g)
136.6
137.28
172.7
172.15
BL™
8.546
13.69
8.859
14.32
Qms
7.208
6.24
6.429
5.33
Qes
0.612
0.50
0.763
0.69
Qts
0.546
0.46
0.682
0.61
No (%)
0.171
0.20
0.234
0.28
Spl (dB)
84.5
85.39
85.86
87.41
Xmax (mm) One Way
7.9
7.9
7.9
7.9
Voice Coil Size (inches)
2.0
2.0
2.0
2.0
Frequency Response (Hz)
45 - 500
45 - 500
36 - 500
36 - 500
Magnet Weight
49.09 oz
49.09 oz
57.75 oz
57.75 oz
Mounting Depth (inches)
5.375” (136mm)
5.375” (136mm)
5.875” (148mm)
5.875” (148mm)
Cutoff Diameter (inches)
9.3125” (236.5mm) 9.3125” (236.5mm)
10.9375 (277.5mm)
10.9375 (277.5mm)
Power (RMS/Peak)
200 / 400 watts
200 / 400 watts
250 / 500 watts
250 / 500 watts
