Cerwin-Vega Stoker Pro Scheda tecnica

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

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

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

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

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

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

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

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

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

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

Stroker PRO Dual Voice Coil Subwoofers

(Stroker PRO 12 - Stroker PRO 15)

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