Cerwin-Vega Stoker Pro Fiche technique
CERWIN-VEGA!
MOBILE AUDIO
SUBWOOFER
Operation and Installation Manual
STROKER
PRO
CERWIN-VEGA! MOBILE AUDIO SUBWOOFER
ATTENTION!
PLEASE READ ALL WARNINGS FOUND IN THIS MANUAL. THIS INFORMATION IS HIGHLIGHTED IN
BOLD ITALIC TYPE AND IS INCLUDED TO INFORM YOU OF THE POTENTIAL FOR PERSONAL INJURY
OR DAMAGE TO PROPERTY
HEARING DAMAGE
CONTINUOUS, EXCESSIVE EXPOSURE TO SOUND PRESSURE LEVELS IN EXCESS OF 85 dB CAN CAUSE
A LOSS OF HEARING. CERWIN-VEGA! STROKER SUBWOOFERS ARE CAPABLE OF PRODUCING
SOUND PRESSURE LEVELS GREATER THAN 130 dB..... “TURN IT DOWN”!
VOLUME AND DRIVER AWARENESS
THE USE OF STROKER SUBWOOFERS CAN IMPAIR YOUR ABILITY TO HEAR NECESSARY TRAFFIC
SOUNDS AND MAY CONSTITUTE A HAZARD WHILE DRIVING. WE RECOMMEND USING LOW
VOLUME LEVELS WHEN DRIVING YOUR VEHICLE.
CERWIN-VEGA! ACCEPTS NO LIABILITY AS A RESULT OF EXCESSIVE USE OR MISUSE OF THIS
PRODUCT
OPERATION AND INSTALLATION MANUAL
1
This manual covers application information for the Stroker PRO 12 and Stroker PRO 15 Dual
voicecoil subwoofers. For installation options and techniques, including subwoofer box
construction, please see your authorized Cerwin-Vega! mobile audio dealer.
INTRODUCTION
Congratulations on your purchase of Cerwin-Vega!’s ultimate statement of ground pounding subwoofers, the new
Stroker Pro. With its innovative DUAL GAP technology, adjustable bias and top spider, the new Stroker Pro defines
how high power/high excursion subwoofers are designed and built. Integral to the design, is the innovative
combination inductive shorting ring/heat sinking basket that transfers voice coil heat away and allows incredible
power handling. Features include:
• Bias Adjustment - tunable for sound Q or SPL
• Dual Gap Technology - allowing greater linear excursion.
• Oversized ellipsoid surround and clamping system - creates larger piston area and field serviceability.
• Heat sinking frame - allows for higher power handling and lower distortion.
• Front Spider - stabilizes driver in extreme excursion
• Dual lower spiders - for optimum suspension linearity
• Field replaceable cone and coil assembly
ABOUT THIS MANUAL
Your Stroker Series subwoofer is covered by Cerwin-Vega’s limited one year warranty. Please
see the warranty card for details.
WARRANTY INFO
CONTENTS
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Stroker PRO Coil Bias Feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Sealed and Ported Cabinet Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
How to Connect your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
CERWIN-VEGA! STROKER SUBWOOFERS
2
Stroker PRO Coil Bias Feature
Right out of the box, the Stroker Pro is set with the voice coil in
the center of the magnetic gap, giving you a high power high-
excursion woofer
with the lowest
possible distortion
and maximum
fidelity. By using
the tool included
with the woofer you
can push, or bias,
the coil’s rest
position forward in
the gap. This creates
asymmetrical system
non linearities.
These non linearities create uneven magnetic force and
compliance on the forward and backward stroke of the
speaker. This allows the speaker to create higher amounts of
even ordered distortion (2nd, 4th, etc.) which contributes to the
overall output giving the dB competition users an added
edge.
The even ordered
distortion also
enhances the
psychoacoustic
phenomena known
as, “The Missing
Fundamental” that
enhances the
perception of deep
bass level.
OPERATION AND INSTALLATION MANUAL
3
Enclosure Information
We recommend using the following enclosure specifications (as
listed on the next three pages) to attain optimum performance:
Stroker Pro 12 Optimum Enclosure (Drivers Tested 1W/1m)
Type: Bass Reflex (ported)
Box Volume: 1.2 cu ft.
Stroker Pro 12 Frequency Response
Stroker PRO 12 Port Specifications
Port Area: 25.3 sq. in / Two 4” I.D. Tubes
Port Length: 11”
Port Tuning: 49hz
CERWIN-VEGA! STROKER SUBWOOFERS
4
Stroker PRO 15 Optimum Enclosure (Drivers Tested 1W/1m)
Type: Bass Reflex (ported)
Box Volume: 3.0 cu ft.
Stroker 152 Frequency Response
Stroker PRO 15 Port Specifications
Port Area: 25.12 sq. in / Two 4” I.D. Tubes
Port Length: 14”
Port Tuning: 36hz
OPERATION AND INSTALLATION MANUAL
5
Stroker Pro 12/15 Optimum Enclosure (Drivers Tested 1W/1m)
Stroker PRO 12 Frequency Response
Type: Sealed Box
Box Volume: 0.7cu ft.
Stroker PRO 15 Frequency Response
Type: Sealed Box
Box Volume: 2.7 cu ft.
CERWIN-VEGA! STROKER SUBWOOFERS
6
Stroker PRO 12 Specifications
Diameter: 12"
No. of Voice Coils: 2
Power Handling: 2500 Wrms
(cont. unclipped power (1250 Wrms per voice coil)
per EIA RS-426B)
Frequency Response: 40~200 Hz
Voice Coil Diameter: 4.0"
Total Weight: 63 lbs, (14.96 kg)
Mounting Diameter: 131⁄8" (33.32 cm)
Mounting Depth: 8" (20.32 cm)
Stroker PRO 12 Thiele-Small Parameters
12
Free-Air
Resonance: fs27 Hz
Total Q: Qts 0.62
Mechanical Q: Qms 8.87
Electrical Q: Qes 0.67
Comp.Vol.: Vas 1.8 ft3
Max. Excursion: Xmax 40 mm
Voice Coil
DC Resistance: Revc 2 x 1.75 Ω
Vol. Displace.: 276 in3
(0.16 ft3)
Nominal Impedance: 2 x 2 Ω
Sensitivity: 84.0dB
OPERATION AND INSTALLATION MANUAL
7
Stroker PRO 15 Specifications
Diameter: 15"
No. of Voice Coils: 2
Power Handling: 2500 Wrms
(cont. unclipped power (1250 Wrms per voice coil)
per EIA RS-426B)
Frequency Response: 36~200 Hz
Voice Coil Diameter: 4.0"
Total Weight: 68.3 lbs, (15.4 kg)
Mounting Diameter: 161⁄4" (41.27 cm)
Through Hole 14” (35.56cm)
Mounting Depth: 9" (20.32 cm)
Stroker PRO 15 Thiele-Small Parameters
15
Free-Air
Resonance: fs26.4 Hz
Total Q: Qts 0.72
Mechanical Q: Qms 7.8
Electrical Q: Qes 0.79
Comp.Vol.: Vas 3.6 ft3
Max. Excursion: Xmax 40 mm
Voice Coil
DC Resistance: Revc 2 x 1.80 Ω
Vol. Displace.: 285 in3
(0.165 ft3)
Nominal Impedance: 2 x 2 Ω
Sensitivity: 86.3dB
CERWIN-VEGA! STROKER SUBWOOFERS
8
Stroker PRO Dual Voice Coil Subwoofers
(Stroker PRO 12 - Stroker PRO 15)
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