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JBL Stadium 1224

Stadium Series 12" component subwoofer with switchable 2- or 4-ohm impedance

Item # 109STAD122

JBL has been building high-performance loudspeakers for decades, so they know something about bass.

Read more from Crutchfield writer, Bob B.

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$199.99 each

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About the JBL Stadium 1224

Quality and power

JBL has been building high-performance loudspeakers for decades, so they know something about bass. They made their latest Stadium Series subwoofers to deliver powerful low-end punch and handle the high wattage of today's car amplifiers.

Quality and power

JBL has been building high-performance loudspeakers for decades, so they know something about bass. They made their latest Stadium Series subwoofers to deliver powerful low-end punch and handle the high wattage of today's car amplifiers.

Handles up to 500 watts RMS

The Stadium Series 1224 12" sub handles up to 500 watts RMS, and it's optimized for use in a very small sealed enclosure. JBL uses the airflow from the internal works to cool the 2-1/2" voice coil, so you can rely on this sub to stay cool in the heat of battle. The sturdy polypropylene cone and nitrile rubber surround will stand up all the abuses of heavy bass output.

Selectable impedance

This Stadium Series subwoofer features SSI™ (Selectable Smart Impedance), a switch which lets you vary the sub's impedance from 2 ohms to 4 ohms to optimize its effectiveness. If you upgrade your amplifier or decide to add another sub, you'll be able to adjust the 1224's impedance to work best with your system.

Versatile power

The terminals on this Stadium Series sub will accept up to 10-gauge wire. You'll get full power from your amp even over long wire runs, so you and your subwoofer have the juice you need. See what this JBL sub can do for your system.

To drive this single subwoofer, we recommend a mono amplifier rated between 375 and 750 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

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Product highlights:

  • 12" high performance car audio subwoofer
  • polypropylene cone
  • nitrile rubber surround
  • stamped steel vented basket
  • handles up to 500 watts RMS (1500 watts peak)
  • frequency response: 25-175 Hz
  • sensitivity at 2.83V: 92dB
  • voice coil diameter: 2-1/2"
  • impedance: 2 or 4 ohms switchable
  • mounting depth: 7"
  • mounting height: 3/4"
  • sealed box volume: 0.75 cubic feet
  • ported box volume: 2.5 cubic feet
  • grille not included
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # STADIUIM 1224
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What's in the box:

  • One 12" Subwoofer (with impedance switch)
  • Eight 1" Screws (4mm Allen head)
  • 8 Washer/Spacers
  • Owner's manual (English/ French/ Spanish/ Portuguese/ Italian/ German/ Russian/ Swedish/ Finnish/ Polish/ Dutch/ Indonesian/ Japanese/ Korean/ Chinese/ Danish/ Turkish)

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Features

Selectable Smart Impedance (SSI): A switch on the input terminal allows you to easily change the woofer's impedance between 2Ω and 4Ω settings. (The connected amplifier should be off when changing the impedance.) The power handling is the same for either setting; 500 watts RMS/1500 watts peak.

Terminal: The set screw wire terminals will accept bare wire up to 10 gauge and are tightened/loosened with a 2.5mm Allen wrench (not included).

Enclosure Recommendations:

  • Sealed Box Volume: 0.75 ft³
  • Ported Box Volume: 2.5 ft³ with one 4" diameter x 11.7" long port (tuned to 30 Hz)
  • Free-Air: The woofer can also be mounted in free air to a baffle board (infinite baffle, no enclosure). When mounted in free air, the power handling is reduced by half (to 250 watts RMS).
  • Band-Pass: JBL also recommends a prefabricated band-pass enclosure, but no volume specifications are listed in the manual. Band-pass enclosures often provide the most output available from any amplifier and subwoofer combination, but at the expense of sonic accuracy.

Thiele-Small Parameters: Some of the parameters change based on the impedance setting:

 
Re (Ω) 1.82 4.07
Le (mH) 1.03 0.94
Sd (cm²) 530.93 530.93
Bl (Tm) 11.70 16.99
Vas (liters) 54.65 52.59
Cms (μm/N) 138 133
Mms (g) 220.58 225.64
Fs (Hz) 28.84 29.07
Qms 4.29 2.56
Qes 0.53 0.58
Qts 0.47 0.47
Xmax (mm) 12 12

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
500 rms [ bilal  Dec 03, 2018 ]

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