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© 2008 Directed Electronics. All rights reserved.
HCCA152 & 154 Vented SPL Enclosure Only.
Note: These SPL enclosures are for dB drag vehicles only!!!!! If music is played through
this type of enclosure, the woofer will be damaged! Listed here are starting points,
experimentation is the key to success. Use extreme caution, the woofers can be
damaged with frequencies below the tuning frequency.
c
b
—Box Parts—
Box Shape – Square Prism
1 Top, 1 Bottom
depth (c) = 14.51 in. (369 mm)
width (b) = 34.74 in. (882 mm)
thickness = 1 in. (25.4 mm)
1 Front, 1 Back
height (a) = 20.23 in. (514 mm)
width (d) = 32.74 in. (832 mm)
thickness = 1 in. (25.4 mm)
2 Sides
height (a) = 20.23 in. (514 mm)
depth (c) = 14.51 in. (369 mm)
thickness = 1 in. (25.4 mm)
— Driver Mounting —
Mounting: Front
Top &
Bottom
a
d
Front
& Back
c
Sides
A
B
C
— External Dimensions —
A = 22.23 in. (565 mm)
B = 34.74 in. (882 mm)
C = 14.51 in. (369 mm)
— Internal Dimensions —
A = 20.23 in. (514 mm)
B = 32.74 in. (832 mm)
C = 12.51 in. (318 mm)
— Wall Thickness —
Front = 1 in. (25.4 mm)
Sides = 1 in. (25.4 mm)
h
e
h
g
— Vent Parts —
1 Top, 1 Bottom
width (e) = 11.5 in
length (h) = 14.34 in. (364 mm)
thickness = 0.75 in. (19 mm)
2 Sides
height (g) = 10 in. (254 mm)
length (h) = 14.34 in. (364 mm)
thickness = 0.75 in. (19 mm)
Box Properties
— Description —
Type: Vented Box
Shape: Prism, Square
(optimum)
— Box Parameters —
Vb = 3.5 cu.ft
V(total) = 4.794 cu.ft
Fb = 57 Hz
QL = 5
F3 = 38.78 Hz
Fill = none
— Vents —
No. of Vents = 1
Vent shape = rectangle
Vent ends = one flush
Hv = 10 in. (254 mm)
Wv = 10 in. (254 mm)
Lv = 14.34 in. (364 mm)