JBL

S3-1224

Details
Item# S3-1224
Variations
  • Select Color
    • Black
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£169.99169.99 each

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Additional Information
High-performance, step-up Series III subwoofers offer an exclusive dual impedance selector switch, plus aero-cooled voice coil design for greater power handling and reliability.
At a Glance:
  • SSI™ (Selectable Smart Impedance)
  • Aero-cooled voice coil
  • Oversized voice coil
  • Premium screw-down terminals
What's in the box:
  • 1 subwoofer
  • Owner’s manual
JBL believes sound quality should never be compromised. And Series III subwoofers make sure you don’t have to compromise flexibility, either. That’s because the high-performance, step-up subwoofers feature SSI™ (Selectable Smart Impedance), an exclusive impedance switch that lets you select the optimum impedance—2 or 4 ohms—for your system. Special aero-cooling design in the voice coil boosts power handling as well as reliability. And an oversized voice coil handles more power than common two-inch voice coils. More power, more reliability, more flexibility—and no compromising. When you’re ready to step up, Series III is your subwoofer.
Product Features:
  • SSI™ (Selectable Smart Impedance)
    Most car audio system designs call for 2- or 4-ohm impedance. Series III subwoofers feature an exclusive dual impedance switch that lets you choose either load impedance option. Not available from any other manufacturer, SSI lets you reconfigure your system by simply flipping a switch.
  • Aero-cooled voice coil
    The Series III voice coil significantly increases power handling and improves reliability by going with the flow—of air. The woofer’s motor channels air pumped by the cone movement past the voice coil, and the voice coil former exposes the coil’s inner and outer surfaces to the airflow. This aero-cooling design is unique among aftermarket subwoofers.
  • Oversized voice coil
    The three-inch (75mm) voice coil proves you don’t have to be a heavyweight to pack a serious punch. It handles more power than conventional two-inch voice coils, yet it’s lighter than four-inch voice coils. It strikes the perfect balance between thermal power handling and low mass.
  • Premium screw-down terminals
    Power is the lifeblood of any subwoofer. The terminals on the Series III accommodate up to 8-guage wire (8.37mm2 cross section), which transfers low-resistance, low-loss power to the woofer, even over long wire runs. This ensures the subwoofer—and your music—has the power it needs.
Legendary JBL Sound

You don't have to venture far from home to experience the legendary power of the JBL sound. Complete 5.1 home theater sound. Includes 4 satellite speakers, a center channel and room-shaking subwoofer.

Highlights:
Manuals & Downloads:
General Specifications:
Frequency Response
25 Hz - 175 Hz
Audio Specifications:
Power Handling (Peak)
1500 W
Sensitivity
92 dB
Power Handling (RMS)
500 W
Frequency Response
25 Hz - 175 Hz
Woofer Specifications:
Voice Coil
63 mm

I see that the recommended vented box is 2.5 cubic feet per sub. Is there a recommended minimum vented volume optimal per sub for the 12" s31224?

Asked by: RickL
Thank you for your question. here are the T/S parameters for your creating a box THIELE-SMALL PARAMETERS VOICE-COIL DC RESISTANCE EVC (OHMS) . . . . . . . . 1.82 . . . . . . . . . 4.07 VOICE-COIL INDUCTANCE @ 1KH EVC (MH) . . . . . . . . . 1.03 . . . . . . . . . 0.94 DRIVER RADIATING AREA D (IN2 ) . . . . . . . . . . 82.29 . . . . . . . . 82.29 SD (CM2 ). . . . . . . . . 530.93 . . . . . . . 530.93 MOTOR FORCE FACTOR: . . . . . . . . . 11.70 . . . . . . . . 16.99 COMPLIANCE VOLUME: VAS (FT3 ). . . . . . . . . . 1.93 . . . . . . . . . 1.86 VAS (LITERS) . . . . . . . 54.65 . . . . . . . . 52.59 SUSPENSION COMPLIANCE MS (µM/N) . . . . . . 138.00 . . . . . . . 133.00 MOVING MASS, AIR LOAD MS (GRAMS). . . . . . 220.58 . . . . . . . 225.64 FREE-AIR RESONANCE: FS (HZ) . . . . . . . . . . 28.84 . . . . . . . . 29.07 MECHANICAL Q: QMS . . . . . . . . . . . . . . 4.29 . . . . . . . . . 2.56 ELECTRICAL Q: QES . . . . . . . . . . . . . . 0.53 . . . . . . . . . 0.58 TOTAL Q: QTS . . . . . . . . . . . . . . 0.47 . . . . . . . . . 0.47 MAGNETIC-GAP HEIGHT AG (IN) . . . . . . . . . . . 0.39 . . . . . . . . . 0.39 HAG (MM) . . . . . . . . . 10.00 . . . . . . . . 10.00 VOICE-COIL HEIGHT: HVC (IN) . . . . . . . . . . . 1.32 . . . . . . . . . 1.32 HVC (MM) . . . . . . . . . 33.50 . . . . . . . . 33.50 MAXIMUM EXCURSION: XMAX (IN) . . . . . . . . . . 0.47 . . . . . . . . . 0.47 XMAX (MM) . . . . . . . . 12.00 . . . . . . . . 12.00 VBOX= 0.75 ft3 (21.20 liters)
Answered by: Randy at JBL
Date published: 2017-06-02

Can you provide me the specs for a bandpass enclosure for this subwoofer?

Asked by: DonH
Thank you for your question on this unit here is the the parameters you requested THIELE-SMALL PARAMETERS VOICE-COIL DC RESISTANCE EVC (OHMS) . . . . . . . . 1.82 . . . . . . . . . 4.07 VOICE-COIL INDUCTANCE @ 1KH EVC (MH) . . . . . . . . . 1.03 . . . . . . . . . 0.94 DRIVER RADIATING AREA D (IN2) . . . . . . . . . . 82.29 . . . . . . . . 82.29 S D (M2) . . . . . . . . . 530.93 . . . . . . . 530.93 MOTOR FORCE FACTOR: BL (TM) . . . . . . .. . . . 11.70 . . . . . . . . 16.99 COMPLIANCE VOLUME: VAS (FT3 ) . . . . . . . . . . 1.93 . . . . . . . . . 1.86 V AS (LITERS) . . . . . . . 54.65 . . . . . . . . 52.59 SUSPENSION COMPLIANCE MS (μM/N) . . . . . . 138.00 . . . . . . . 133.00 MOVING MASS, AIR LOAD MS (GRAMS). . . . . . 220.58 . . . . . . . 225.64 FREE-AIR RESONANCE: FS (HZ) . . . . . . . . . . 28.84 . . . . . . . . 29.07 MECHANICAL Q: QMS . . . . . . . . . . . . . . 4.29 . . . . . . . . . 2.56 ELECTRICAL Q: QES . . . . . . . . . . . . . . 0.53 . . . . . . . . . 0.58 TOTAL Q: QTS . . . . . . . . . . . . . . 0.47 . . . . . . . . . 0.47 MAGNETIC-GAP HEIGHT AG (IN) . . . . . . . . . . . 0.39 . . . . . . . . . 0.39 HAG (MM) . . . . . . . . . 10.00 . . . . . . . . 10.00 VOICE-COIL HEIGHT: HVC (IN) . . . . . . . . . . . 1.32 . . . . . . . . . 1.32 HVC (MM) . . . . . . . . . 33.50 . . . . . . . . 33.50 MAXIMUM EXCURSION: XMAX (IN) . . . . . . . . . . 0.47 . . . . . . . . . 0.47 XMAX (MM) . . . . . . . . 12.00 . . . . . . . . 12.00
Answered by: Randy at JBL
Date published: 2017-06-02
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