Audiovox Rampage ACD-12 User manual

HIGH PERFORMANCE
SUBWOOFERS
MODELS PSPL-10 AND PSPL-12
OWNERS MANUAL

Congratulations on your purchase of the Prestige High Performance
Subwoofer. The
Prestige Subwoofers are designed to provide you with high
quality Bass reproduction required to make your car audio system perform to
its full potential.
PRESTIGE Subwoofer Features
lDual2Ohmvoicecoilformaximumflexibilityandperformance
lLow-Q parameters for Isobaric and small sealed box enclosures
lVented magnet for improved performance
lChrome-plated binding posts that can accept up to 10-gauge wire
lLong throw suspension assembly
lCarboninjectionwoofercone
SUBWOOFER PARAMETERS
PSPL-10 PSPL-12
NominalPower Rating 300 Watts 350Watts
MaximumPowerRating 600Watts 700Watts
FerriteMagnet 60Ounce 80Ounce
FrequencyResponse 20Hz-2.5kHz 20Hz-2.5kHz
ResonantFrequency (F/O) 40 Hz ± 20% 35 Hz ± 20%
VCDiameter 1.5" 2.0"
SoundPressure Level 87dB ± 1.5 dB 88 dB ± 1.5 dB
Xmax 9.5mm 9.5 mm
NominalImpedance 2 Ohms x 2 2Ohms x2
DCR 1.98Ohms 1.98 Ohms
Speaker Weight 4.6 kg 5.8 kg
WARNING: High-powered car audio systems may produce sound
pressurelevelsthat exceed the threshold at which hearing
loss may result. They may also impair a driver’s ability to
hear traffic sounds or emergency vehicles. Use common
sense and practice safe listening habits when listening to
your audio system.
DUAL VOICE COIL WIRING
CAUTION: Neverconnect onlyonevoice coilofa dualvoicecoil woofer.
Both must be driven at the same time for proper operation.
Neverconnect anamplifierto an impedanceload lower than
it is rated to handle.
SERIES/PARALLEL MONAURAL CONNECTION
Parallel wiring for a single, dual-voice coil 2-Ohm woofer in a monaural system will
result in a total impedance load of 1 Ohm at the amplifier, (See Fig. 1) if your
amplifierisratedtodrive 1 Ohm in bridged or one-channel operation. If each of two
dual-voice coil 2-Ohm woofers are connected in parallel and then wired to each
2

4 Ω
STEREO
L
R
-
+
-+
4 Ω
-
+
-+
4 Ω
other in parallel, a 0.5-Ohm monaural output would result (See Fig. 2). On the other
hand,if youramplifieris rated for2-Ohm operation inbridgedor one-channeloperation,
series-connectthewoofer voice coils (See Fig. 3). If the amplifier is rated for 4Ohms,
interconnectthevoicecoils of the woofer in series as shown to obtain an 4-Ohmmon-
aural output (See Fig. 4).
3
0.5 Ω
MONO
1 Ω
MONO 2 Ω
MONO
4 Ω
MONO
2
-
+
-+
1 Ω-
+
-+
1Ω
-
+
-+
1 Ω-
+
-+
4 Ω-
+
-+
4 Ω
-
+
-+
4 Ω
2 Ω
STEREO
-
+
-+
2 Ω
1 Ω
STEREO
R
L
-
+
-+
1 Ω
-
+
-+
1Ω
SERIES/PARALLEL STEREO CONNECTION
Series wiring of each of two, dual voice-coil 2 Ohm woofers will result in a total
impedance load of 4 Ohms at each channel of the amplifier (See Fig. 5). Otherwise,
connectone woofer to each channel for 2 Ohm stereo operation (SeeFig. 6), or two
parallel-wired woofers(one-per-channel) for 1-Ohm stereooperation(See Fig.7).
Fig. 1
PARALLEL SERIES
Fig. 4
Fig. 3
Fig. 2
Fig. 7
Fig. 6
Fig. 5

4
INSTALLATION RECOMMENDATIONS
To realize the utmost in sound reproduction from your subwoofer(s), follow these
installationrecommendations:
lUse a quality large gauge wire to connect your subwoofer to the
amplifier
lUseasubwoofercrossovertoremoveunwantedhigherfrequencies
lPosition the enclosure in the rear of the vehicle with the subwoofer
facingrearward to improvebassresponseand avoid cancellation of
audiofrequencies
ENCLOSURE CONSTRUCTION RECOMMENDATIONS
Toenhance subwooferperformance, thefollowinggeneral recommendationsshouldbe
addressedwhenconstructing the speaker enclosure:
lUse 3/4" MDF for your construction material
lGlue all joint seams
lScrewalljointstight
lBrace all walls
DESIGNING AND BUILDING YOUR SPEAKER ENCLOSURE
The following parameters are offered to assist you in designing your own enclosure.
Thereare many computer software programs available on the market that, along with
this information, will allow you to construct the type of enclosure that best suits your
needs.
To obtain the best possible results, we suggest you use our recommended enclosure
designsand have an automotivesoundprofessionalbuild your enclosure.

5
Thiele/Small Parameters
PSPL-10 PSPL-12
Series Parallel Series Parallel
Fs 38.88Hz 38.40 Hz 32.44 Hz 32.14Hz
Re 3.97Ohms 0.95 Ohms 4.01 Ohms 0.99Ohms
Res 31.88Ohms 4.32Ohms 41.37Ohms 10.37 Ohms
Qms 3.89 2.55 4.41 4.34
Qes 0.48 0.56 0.43 0.42
Qts 0.43 0.46 0.39 0.38
R2 8.69Ohms 2.53Ohms 12.65Ohms 3.18Ohms
Vas (Sd) 29.44 Ltrs 30.17Ltrs 54.81Ltrs 55.84Ltrs
Mms (Sd) 68.43Gms 68.43Gms 106.45Gms 106.45 Gms
Cms(Sd) 245M/Ntn 251 M/Ntn 226 M/Ntn 230M/Ntn
Bl (Sd) 11.31Tesla-M 5.30Tesla-M 14.27Tesla-M 7.16Tesla-M
SPLref(Sd) 87.4 dB 86.7 dB 88,2dB 88.3 dB
Parameters

©2000 Audiovox Corporation,Hauppauge,NY 11788 128-5809
PSPL-10 PSPL-12
Recommended Enclosure Designs
SEALED BOX (Vb) Box Volume = 0.56 Cu. Ft. F3: 42 Hz
Dimensions: 11.5" W x 16" H x 5.25" D
(Vb) Box Volume = 0.77 Cu. Ft.
F3: 64 Hz
Dimensions: 13.5" W x 17.75" H x 5.5" D
VENTED BOX
(Vb) Box Volume = 1.15 Cu. Ft.
F3: 42 Hz
Dimensions:12.5" W x 20.25" H x 7.75" D
(P) Port = 2" ID x 7.875" Long
(Vb) Box Volume = 1.68 Cu. Ft.
F3: 36 Hz
Dimensions: 14.13" W x 23" H x 8.75" D
(P) Port =3" ID x 8.75" Long
BANDPASS
BOX (4th
order)
Vbt = 1.15 Cu. Ft. (total)
Vbs = .58 Cu.Ft. (sealed side)
Vbp = .57 Cu. Ft. (ported side) (speaker
loads into this side)
Port = 3" ID x 9.25" Long
F3: 39 Hz & 100 Hz with negligible gain
10" W (inside) x 16.125" H (inside) x
6.125" D (inside) (sealed side) x 6" D
(inside) (vented side)
Vbt = 1.23 Cu. Ft. (total)
Vbs = .59 Cu.Ft. (sealed side)
Vbp = .64 Cu. Ft. (ported side) (speaker
loads into this side)
Port = 3" ID x7.125" Long
F3: 38 Hz & 115 Hz with negligible gain
12" W (inside) x 16.125" H (inside) x
5.125" D (inside) (sealed side) x 5.625" D
(inside) (vented side)