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Congratulations on your new Soundstream sub-woofer purchase. We
greatly appreciate your business. This may look like a run-of-the-mill
cardboard box, but it’s actually a protective barrier over one of the
finest engineered and assembled sub-woofers available.
Harmonic Indulgence… Listen and Feel
Features, Parameters, & Dimensions
series wired SPLX-122HF SPLX-152HF
Fs (Hz) 40.32 35.96
Qms 6.348 6.476
Vas (ft³) 0.936 87.56
Cms (mm/N) 0.072 0.0794
Mms (g) 218.0 247.1
Xmax (mm) 13.00 13.00
Xmech (mm) 19.50 19.50
Piston Diameter (in) 10.04 13.19
Sd (in²) 79.16 136.6
Qes 0.453 0.503
Re (Ω) 2.92 2.95
Z(Ω)4 4
BL (Tm) 18.88 18.09
Rms Power (watts) 1,000 1,250
Qts 0.423 0.467
NO (%) 0.37 0.78
1w/1m SPL (dB) 87.70 90.95
Voice Coil Diameter (in) 3” 3”
Impedance (Ω) DVC 2ΩDVC 2Ω
M-vd (ft.3) .188 .298
Overall Diameter (in) 12.625 15.25
Overall Height (in) 8.125 9.25
Mounting Depth (in) 7 8.375
Cutout Diameter (in) 11 14.125
Motor Diameter (in) 7.75 7.875
Motor Height (in) 3.5 3.5
Flange Width (in) .875 .75
Flange Height (in) .75 .625
Weight (lbs) 34 35
Aluminum Voice Coil Former
Epoxy Coated Pulp Paper Cone
UV Coated Foam Surround
Dual NOMEX Spiders
ABS Injection Dust Cap
Vented T-Yoke
Suspension Integrated Tinsel Leads
Cast Aluminum Basket
Copper Clad Aluminum Voice Coil
8 ga. Compression Wire Terminal
94 oz. Ferrite Magnet
Embossed Back Plate
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Soundstream does not provide enclosure dimensions as there are
infinite variables when designing a box, i.e. vehicle, amplifier, music
preferences, etc… For designs tailored to your specific needs, please
Enclosure Dimensions
All enclosures should be made of .75” (3/4”) material only. When
possible, make the baffle 1.5” (1 ½) thick and add .75” (3/4”) to the
depth of the enclosure to compensate. All volumes INCLUDE vent/
port and subwoofer displacements. DO NOT change the volume
unless you plan on adding a substantial amount of bracing. For
added performance, applying a coat of fiberglass resin to the interior
walls will greatly improve sealing the enclosure. Adding a thin layer
of poly-fill will improve response by smoothing out reflections
within the enclosure.
Enclosure Construction
Enclosure Recommendations
SPLX-122HF High Tuning SPLX-122HF Low Tuning
Vol.
(ft.3)
Vent
(dia. X L)
Freq.
(Hz)
-3dB
(Hz)
Gain
(dB @ Hz)
Vol.
(ft.3)
Vent
(dia. X L)
Freq.
(Hz)
-3dB
(Hz)
2.00 (2) 4" x 11.75" 50.2 41.5 4.7 @ 54.6 2.50 (3) 3" x 14" 39.9 34.2
3.00 (3) 4" x 11.75" 50.1 40.8 6.1 @ 52.7 3.50 (3) 3" x 12.25" 34.1 29.8
4.00 (3) 4" x 6.25" 50.1 40.8 7.1 @ 51.8 4.50 (2) 4" x 14.5" 30.0 26.7
SPLX-152HF High Tuning SPLX-152HF Low Tuning
Vol.
(ft.3)
Vent
(dia. X L)
Freq.
(Hz)
-3dB
(Hz)
Gain
(dB @ Hz)
Vol.
(ft.3)
Vent
(dia. X L)
Freq.
(Hz)
-3dB
(Hz)
3.00 (2) 4" x 6.5" 50.4 43.0 4.4 @ 64.3 4.00 (2) 4" x 8.25" 40.0 35.4
4.00 (4) 4" x 12.25" 50.1 41.4 4.9 @ 60.1 5.00 (2) 4" x 8.5" 35.0 31.4
5.00 (6) 4" x 16.50" 50.1 40.8 5.3 @ 57.6 6.00 (2) 4" x 10" 30.0 28.0