JBL S2-1224 12" SSI Subwoofer

Model: S21224 UPC: 050036326742 Item: 167099


Regular Price: $139.95

Save: $30.00 (21%)

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Product Information

Quality That Lasts

The S2-1224 Series II 12” car subwoofer from JBL exhibits fantastic build quality for its price point. Featuring a rugged polypropylene woofer cone and durable rubber surround, you can expect years of reliable and consistent performance. A great selling point of this subwoofer (aside from its great build quality) is that it doesn’t need gobs of power to run well. Handling up to 275 watts of continuous power, this subwoofer would run quite well off of most car subwoofer amplifiers.

Selectable Smart Impedance (SSI™)

With a flick of a switch, you can change the S2-1224’s impedance between 2 and 4 ohms. This type of versatility allows you to change the configuration of the subwoofer on the fly to extract maximum power from your amplifier. This comes in handy when you change out the amplifier or if you add another S2-1224 into the mix.

Allow Us To Suggest…

To properly power this subwoofer (assuming you are using only a single S2-1224 subwoofer in your setup), we would recommend a single-channel (or monoblock) amplifier that is stable at 2 ohms. Ideally, the power output of this car amplifier at 2 ohms would be around 200-300 watts.

S2-1224 Highlights:

  • Selectable Smart Impedance (SSI™) for maximum power extraction from your amplifier
  • Polypropylene woofer cone that has been tested thoroughly for reliability
  • Durable rubber surround for long-lasting performance
  • Warranty: 1 year
  • Included: World Wide Stereo 60-day guarantee and expert product support


S2-1224 Specifications:

  • 12” component subwoofer
  • Selectable 2- or 4-ohm impedance
  • Up to 275 watts of continuous power handling
  • Peak power handling: 1100 watts
  • Frequency response range: 25Hz – 175Hz
  • Sensitivity: 93dB
  • Top-mount depth: 5-13/16”
  • Sealed box volume: 0.75 cu. ft.
  • Ported box volume: 2.5 cu. ft.

What's in the Box

What's in the Box:

  • 1 S2-1224 subwoofer
  • Owner’s manual



Customer Reviews for JBL S2-1224 12" SSI Subwoofer

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Having proper subwoofer box makes huge diffrence
I buy 2 of these to replace my older model jbl p1224 which was in the middle of the passenger and driver seat. Takes a space. So I buy 2 of the s2-1224 since my truck is quad cab I was planing to put it under my back seat with subwoofer box. So because of the cubitfeet was enough sound quality wasn't good at all. Then I build a proper requirement subwoofer box wow what a huge difference. You have to know that subwoofers lives in the proper box. Moving free air is okay for some subwoofers but it's not proper way to do it. Every subwoofer needs specific box. Even changing the vent ports size makes a huge difference on the bass. So know what you doing before you claiming that subwoofers are cracking. They are cracking because they are moving to much since there is no air restriction. I am happy with the results. They have nice bass and switching from 2ohm to 4 ohm is huge advantage there is no other brand in the market has that capability.
January 22, 2018
Originally posted at


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Is there a minimum amp size to power this dub?
A shopper on Jan 15, 2018
  Hi. Thanks for reaching out! This subwoofer thrives well with an amplifier that outputs around 300 watts at 2 ohms. Thanks again for your inquiry!