JL Audio 12TW3-D8 Bedienungsanleitung
JL Audio
Automatischer Subwoofer
12TW3-D8
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12TW3 Subwoofer Driver
Congratulations on your purchase of a JL Audio subwoofer component. Your JL Audio subwoofer
is a precision loudspeaker which has been engineered to produce the highest quality sub-bass
performance in your vehicle. Authorized JL Audio dealers have extensive technical information
for many different applications of your new speaker. They also have the knowledge, skills and tools
to build a high-quality enclosure that will maximize the performance of your speaker. We highly
recommend that you have your enclosure built by an authorized JL Audio dealer.
Inside you will find specifications and two recommended enclosures for your speaker; one is a
sealed enclosure, the other is a ported design. Both types of enclosures will give you excellent sound
quality and low-frequency extension. The sealed enclosure is a better choice if space is extremely
tight, but the ported enclosure will produce 3dB more output at the same power if you have the
extra space to work with.
OWNER’S MANUAL
2 JL AUDIO 12TW3-D4 / 12TW3-D8
JL AUDIO 12TW3-D4 / 12TW3-D8 12TW3 Dual Voice Coil Wiring
Please Note: The TW3 is a dual voice coil driver.
BOTH voice coils must be connected to the amplifier
(in series or parallel) for the speaker to operate
properly. To accomplish this, each TW3 features a pair
of main input connection push-terminals for each
voice coil. Verify that the connections are properly
configured based on these wiring diagrams to
achieve the desired load prior to sending signal to
the subwoofer.
All specifications are subject to change without notice.
* Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.
** Efficiency (1W/1m) is not an accurate indicator of a subwoofer’s output capability and should not be used as a comparison to
other subwoofers to determine which one is “louder” !
*** Re (DC resistance) is measured with the voice coils in series, for parallel-wired specification divide Re by 4. All other specifications
remain the same.
SUBWOOFER 12TW3-D4 12TW3-D8
Free Air Resonance (Fs): 26.460 Hz 32.660 Hz
Electrical “Q” (Qes): 0.558 0.715
Mechanical “Q” (Qms): 10.766 10.071
Total Speaker “Q” (Qts): 0.531 0.668
Equivalent Compliance (Vas): 1.72 ft3
48.73 litres
1.205 ft3
34.12 litres
One-way, Linear Excursion
(Xmax)*:
0.60 in
15.2 mm
0.60 in
15.2 mm
Efficiency (1W/1m)**: 84.11 dB SPL 84.23 dB SPL
Effective Piston Area (Sd): 83.517 in2
0.0539 m2
83.517 in2
0.0539 m2
DC Resistance (Re)***: 9.280 ohm 14.800 ohm
Nominal Impedance: Dual 4-ohm
voice coils
Dual 8-ohm
voice coils
Power Handling (continuous): 400 W 400 W
12TW3 SUBWOOFER
PHYSICAL SPECIFICATIONS
Nominal Diameter: 12.0 in
300 mm
Overall Major Diameter (A1): 13.2 in.
335 mm
Overall Minor Diameter (A2): 12.5 in
318 mm
Mounting Hole Diameter (B): 11.625 in.
295 mm
Bolt Hole Circle (C): 12.5 in.
318 mm
Magnet Diameter (D): 6.125 in
156 mm
Mounting Depth (E): 3.5 in
89 mm
Net Weight: 14.9 lbs
6.8 Kg
Driver Displacement: 0.029 ft3
0.82 liters
AMPLIFIER
AMPLIFIER
AMPLIFIER
AMPLIFIER
AMPLIFIER
AMPLIFIER
8Ω (D4)
16Ω (D8)
4Ω (D4)
8Ω (D8)
2.7Ω (D4)
5.3Ω (D8)
2Ω (D4)
4Ω (D8)
1Ω (D4)
2Ω (D8)
0.7Ω (D4)
1.3Ω (D8)
AMPLIFIER
AMPLIFIER
AMPLIFIER
AMPLIFIER
AMPLIFIER
AMPLIFIER
8Ω (D4)
16Ω (D8)
4Ω (D4)
8Ω (D8)
2.7Ω (D4)
5.3Ω (D8)
2Ω (D4)
4Ω (D8)
1Ω (D4)
2Ω (D8)
0.7Ω (D4)
1.3Ω (D8)
Voice Coils Wired in Series
(Multiple speakers wired in Parallel)
Voice Coils Wired in Parallel
(Multiple speakers wired in Parallel)
A1
B
D
E
C
A2
JL AUDIO 12TW3-D4 / 12TW3-D8 3
All specifications are subject to change without notice.
SUBWOOFER RECOMMENDED SEALED ENCLOSURE
Volume
(net int.)
External Dimensions
(Width x Height x Depth)
F3
(Hz)
Fc
(Hz) Qtc
12TW3-D4 0.80 ft3
22.7 liters
21.25 in x 16 in x 6.5 in
540 mm x 406 mm x 165 mm 37.99 46.97 0.9426
12TW3-D8 1.00 ft3
28.3 liters
25 in x 16.625 in x 6.5 in
635 mm x 422 mm x 165 mm 38.27 48.50 0.9919
SUBWOOFER RECOMMENDED PORTED ENCLOSURE
Volume
(net int.)
Enclosure External Dimensions
(Width x Height x Depth)
Slot Port Internal Dimensions
(Slot Width x Slot Height x Slot Length)
Tune to:
(Hz)
F3
(Hz)
12TW3-D4 0.95 ft3
26.9 liters
30 in x 16.625 in x 6.5 in
762 mm x 422 mm x 165 mm
5 in x 2.5 in x 31.25 in
127 mm x 64 mm x 794 mm 32.14 32.52
12TW3-D8 1.3 ft3
36.8 liters
34 in x 17 in x 6.75 in
864 mm x 432 mm x 171 mm
5.25 in x 2.375 in x 24 in
133 mm x 60 mm x 610 mm 31.00 29.79
• The enclosure recommendations listed are external
dimensions which assume the use of 3/4" (19mm)
thick material. If you are using 5/8" (16mm) thick
material, subtract 1/4" (6.5mm) from each dimension.
Do not use any material with a thickness of less than
5/8" (16mm) as this may compromise the rigidity of
the enclosure.
• Enclosure volumes listed are net internal volumes!
Box volume displacement, port displacement and
brace displacement must be added to obtain the
final gross internal volume. All enclosure dimensions
listed have already taken this into account.
• When using two subwoofers in a common
enclosure simply double the required volume.
• We recommend the use of this speaker in a bi-amplified
system using high-quality satellite speakers and
amplifiers. We do not recommend the use of this
subwoofer with a passive crossover (coil), as this type of
device will adversely affect performance.
W
H
D
SW
SH
PL
Port Wall Length:
12TW3-D4: 26 in (660 mm)
12TW3-D8: 22.0625 in (560 mm)
(End correction accounted for)
Prolonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance
speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity.
When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend
bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers
for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly
important in a hatchback, station wagon, sports utility vehicle, or van.
!! CAUTION !!
Produktspezifikationen
| Marke: | JL Audio |
| Kategorie: | Automatischer Subwoofer |
| Modell: | 12TW3-D8 |
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