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VENTED ENCLOSURE APPLICATIONS
L7T subwoofers will handle massive amounts of power in any of the recommended enclosures,
minimum or maximum. The smaller enclosures are best for use in limited-space applications. The larger
recommended enclosures will yield slightly more bass at the lowest frequencies.
Vented Minimum
Box Volume, ft³ (L) + port displacement
Port Opening Size, in x in (cm x cm)
Port Length, in (cm)
Power Handling, RMS
Vented Maximum
Box Volume, ft³ (L) + port displacement
Port Opening Size, in x in (cm x cm)
Port Length, in (cm)
Power Handling, RMS
The ported Minimum design increases bass effi ciency and fi ts in many space-limited applications.
Although it is the smallest recommended ported enclosure, the output from 30 to 80 Hz will be
considerably higher than that of any sealed box. The Maximum ported design has even more output in
this crucial frequency band. The Maximum is the largest and most effi cient enclosure design.
SEALED ENCLOSURE APPLICATIONS
Sealed Minimum
3
Model
Volume ft
(L)
L7T8
.2, (5.66)
L7T10
.4, (11.3)
L7T12
.55, (15.6)
The L7T generates more sound pressure than an equivalently-sized round speaker and excels when used
in the recommended sealed boxes. These sealed enclosure designs give the smoothest response with
increased energy at the lowest frequencies, 25 to 30Hz. The maximum enclosure volume application is
ideal for SQ (ultra sound quality) installations and generates a very fl at response curve, extending the sub-
bass response.
L7T woofers perform well in any size sealed enclosure between the Minimum and Maximum volume
recommendations. These systems will exhibit benefi ts of both designs: Minimum produces high-
impact bass, and Maximum generates low bass frequency protraction. Overall, the system will
sound more like the recommended enclosure design it is closest to in enclosure volume. These
enclosure recommendations have been calculated with the airspace inside the enclosure and include
the displacement of the woofer. All sealed-enclosure airspace should be fi lled to 50% loose poly-fi l
(polyester fi berfi ll) stuffi ng. Do not make the airspace greater than the SQ, maximum enclosure volume,
recommendation.
2019 L7T Rev D.indd 5
2019 L7T Rev D.indd 5
L7T8
.8, 22.7
1.5x8, 3.8x20.3
20.75, 52
350
L7T8
1.2, 34
2x8, 5.1x20.3
19.125, 48.6
350
Sealed Maximum
Power Handling
Model
350W RMS
L7T8
500W RMS
L7T10
600W RMS
L7T12
L7T10
L7T12
1.25, 35.4
1.75, 49.6
2x10.5, 5.1x26.7
2.5x12.5, 6.4x31.8
20, 50.8
20, 50.8
500
600
L7T10
L7T12
1.75, 49.6
2.25, 63.7
2.5x10.5, 6.4x26.7
3x12.5, 7.6x31.8
20, 50.8
20.5, 52.1
500
600
3
Volume ft
(L)
Power Handling
.75 [21.2]
350W RMS
1, (28.3)
500W RMS
1.25 (35.4)
600W RMS
5
2/14/2019 9:50:14 AM
2/14/2019 9:50:14 AM
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