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Congratulations on your choice of a Hifonics subwoofer.
This "Quick Start Installation" guide is meant to help you
"hook up" and play music. For more detailed information
on system setting, speaker and subwoofer configuration,
and full specifications by model, visit the website at
Hifonics.com
CAUTION
Always consider consulting a professional audio installer
before installing new subwoofers. High power audio
systems have the ability create sound levels above 130dB.
Extended exposure to high sound pressure levels can
cause hearing damage.
Always run any new wiring through safe areas that wont
interfere with the normal operation of the vehicle.
Subwoofer dimensions
A
D
C
A
B
in(mm)
10.09"(256.3) 5.54"(138.6) 9.15"(232.4) 7.54"(191.5)
TW10
TW12
12.19"(309.5) 6.09"(154.8)
11"(279.5)
15.35"(390) 6.99"(177.6)
13.9"(353)
TW15
Before you start
It's a good idea to confirm that you have purchased the
correct size subwoofers to fit your vehicle. If you have any
reservations about being able to complete the installation
yourself, we recommend contacting a professional. Be careful
as you go. Always disconnect the negative battery terminal
before starting any electrical work on the vehicle.
Enclosure types
Sealed
Sealed enclosures offer a range of performance
profiles depending on the internal air volume.
Larger enclosures will have a smoother more
extended response while a small enclosure
will have increased output in a more focused
frequency range. Sealed enclosures are the
simplest to construct but do require that the box
be completely air tight.
Vented
Vented designs offer the ability to tune the
enclosure. Larger enclosures will have a
smoother more extended response while a
small enclosure will have increased output
in a more focused frequency range. Vented
enclosures are more difficult to construct but
offer more overall output.
Volume calculation
B
The internal volume of the
enclosure must be determined
to insure proper performance.
Simply measure height, width and
depth of enclosure you intend
to build. Subtract the material
thickness. Multiply these numbers
and divide by 1728 to get the
volume in cubic feet.
For enclosures with an angled
panel, measure the larger and
smaller depths, add these
together and divide by two. Use
C
D
this averaged depth.
7.54"(191.5)
7.54"(191.5)
Enclosure
H x W x D
Volume
1728
D1 + D2
D
2
Recommended enclosures
Sealed
TW10
TW12
TW15
12"
14"
17"
Height
12"
14"
17"
Width
13"
14"
18"
Depth
Vb
0.654
0.992
2.024
52 Hz
48 Hz
44 Hz
F3
0.804
1.058
1.022
Qtc
Vented
TW10
TW12
TW15
12"
14"
17"
Height
Width
20"
23"
26"
Depth
22"
20"
20.25
10.5"
12.5"
15.5"
VH (Vent Height)
2.5"
2.5"
3"
VW (Vent Width)
VL (Vent Length)
23"
27"
22"
VA (Vent Area)
26.25 A(in^2)
31.25 A(in^2)
46.5 A(in^2)
1.606
1.888
4.125
Vb (Box Volume )
39 Hz
41 Hz
35 Hz
F3
41 Hz
37 Hz
33 Hz
Fb
Enclosure construction
•
Use 3/4" MDF
•
Make sure the woofer mounting panel is
full width and height
•
Glue all mating surfaces
•
Use wood screws
•
Use silicone caulk on all internal joints