REFERENCE R1 SERIES

Soundstream's flagship sound quality subwoofer, the R1 is probably the most revolutionary woofer you will ever see. These very unique subwoofers encompass technologies that no other American car audio companies are using. With features only found in high-end European subs and components, the R1s are extremely advanced. Getting away from the traditional overhung motor, our underhung motor yields much less distortion and for quality sound… The heatsink-cooled Dual Flux Plates create a very tall magnetic gap and is complimented
by a secondary magnet on top of the structure which acts as a “bucking” magnet and strengthens the gap. While this driver is the ultimate Sound Quality subwoofer, it can still generate massive amounts of bass due to the 12.7mm of 1-way linear excursion and 46.8mm of peak-to-peak mechanical excursion! Whether you chill to smooth Jazz, bang your head to Hard Core, or split your ears with pounding Rap music, the R1 series subwoofers will blow away even the most critical listener…


FEATURES

• Dual 3” Flat Wire Wound Voice Coil
• Copper Clad Aluminum Voice Coil Wire
• Dual Layer Aluminum Voice Coil Former for Extreme Strength
• All-in-One Discrete Mount Terminals
• Tall Motor Gap for Extended XMax
• Dual Large High Temp Ferrite Magnets
• Integrated Aluminum Motor Heat Sink
• Backed by one year manufacturer waranty
• Aluminum Cone & Dust Cap for Added Heat Dissipation and Strength
• High-Roll Surround for Added Cone Surface Area & Xmax
• Dual Mirror Stacked Spiders w/ Integrated Tinsel Leads
Secondary Stamped Steel Basket for Easy Re-coning (Contact Parts Office)

 


T/S Specs R1-12 R1-15
Fs (hz) 21.50 23.70
Qms 9.210 13.400
Vas (ft³) 2.863 4.825
Cms (mm/n) 0.220 0.140
Mms (g) 249.5 317.2
Rms (kg/s) 3.654 3.520
Xmax (mm) 12.70 12.70
Xmech (mm) 23.40 23.40
Dia (in²) 10.030 12.790
Sd (in²) 79.16 127.70
Vd (ft³) 0.042 0.068
Qes 0.490 0.650
Re (Ohm) 6.80 6.80
Z (Ohm) 8 8
BL (Gauss) 21.60 22.16
Pe (watts) 800 900
Qts 0.418 0.620
NO 0.159 0.265
1w/1m SPL (dB) 84.15 86.40
2.8v SPL (dB) 84.85 87.09
VC Dia. (in) 3.0 3.0
Impedance (Ohm) DVC 4 DVC 4
M-vd (ft³) 0.1500 0.2000
 
Measurements (in) R1-12 R1-15
Overall Diameter 12.75 15.625
Overall Height 8.625 9.875
Mounting Depth 7.375 8.625
Cutout Diameter 11 14
Motor Diameter 10.5 10.5
Motor Height 5.875 5.875
Flange Width 0.75 0.75
Flange Height 0.875 0.875
     

 

Sealed Box R1-12 R1-15
Min. Sealed (ft³) 1.00 1.50
Qtc 0.690 0.870
F3 (Hz) 42.70 41.40
Opt. Sealed (ft³) 1.50 2.00
Qtc 0.610 0.800
F3 (Hz) 40.90 38.70
Max. Sealed (ft³) 2.00 2.50
Qtc 0.570 0.750
F3 (Hz) 40.20 37.30
 
Ported Box R1-12 R1-15
Min. Vented (ft³) 2.00 3.00
Port (dia. x length) 4x14.5 (2)3x9.5
Fb (Hz) 34.10 34.20
F3 (Hz) 28.90 30.20
Opt. Vented (ft³) 3.00 4.00
Port (dia. x length) (2)3x11 (2)4x15.5
Fb (Hz) 32.20 32.00
F3 (Hz) 26.00 27.30
Max. Vented (ft³) 4.00 5.00
Port (dia. x length) (2)4x17.5 (2)4x16.5
Fb (Hz) 30.50 27.70
F3 (Hz) 24.50 23.80
 
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