JBL S2-1224SS

1100W Peak (275W RMS) 12" SSI Subwoofer Enclosure with Slipstream Port and Selectable 2-Ohm or 4-Ohm Impedance

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• 275 Watts RMS
• 1100 Watts Max
• Nominal Impedance: Single 2 or 4 ohm
• Polypropylene Cone
• Nitrile Butadiene Rubber (NBR) Surround
• Slipstream port design with double-flared design
• Frequency Response: 25 ~ 175 Hz

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Current Promotions (1 offer)

Add an NVX SDTK20 Sound Dampening Trunk Kit to your Subwoofer purchase and save 50%. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

JBL S2-1224SS

50% off

Priced separately $319 89

Promo Savings of $30 00

Total price:

$289 89

Product Highlights

• 275 Watts RMS
• 1100 Watts Max
• Nominal Impedance: Single 2 or 4 ohm
• Polypropylene Cone
• Nitrile Butadiene Rubber (NBR) Surround
• Slipstream port design with double-flared design
• Frequency Response: 25 ~ 175 Hz



Authorized dealer

General Features:

  • 12" Series II Car Audio Subwoofer
  • Power Handling:
    • Peak: 1100 watts
    • RMS: 275 watts
  • Nominal Impedance: Single 2 or 4 ohm
  • Polypropylene Cone
  • Nitrile Butadiene Rubber (NBR) Surround
  • Stamped Steel Basket Frame
  • SSI (Selectable Smart Impedance)
  • Oversized 2.0" Voice Coil
  • Slipstream port design with double-flared design
  • Binding Post Terminals
  • Frequency Response: 25 ~ 175 Hz
  • Xmax: 10.25 mm
  • Sensitivity: 93 dB
  • Dimensions (Approx): 22.44" W x 14.52" H x 12.00" D
  • Matching amplifier:
    • JBL GX-A3001 Monoblock GX Series Class D Amplifier
      2 ohms: 300 watts x 1 chan.
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

    PROP 65 WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov

Specifications & Details

Subwoofer Specifications
Subwoofer Size
Voice Coil(s)
Impedance (Per Voice Coil)
2 or 4 ohms
Final Wired Impedance
RMS Power Handling
275 watts
Peak Power Handling
1100 watts
Woofer Composition
Woofer Surround
Nitrile Butadiene Rubber NBR
93 dB
Frequency Response
25 - 175 Hz
Xmax (millimeters)
10.25 mm
Subwoofer Design
Round / Circle
Enclosure Specifications
Box Type
Vented / Ported
Number of Subs/Speakers
Box Style/Shape
Hatchback Style, Angled Back
Wood Thickness
Number of Terminals
Terminal Type
Binding posts
Box Exterior Color
Box Finish
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details



Model Number:




Internal SKU:


Internal Product ID:


Product and How-to Videos

  • JBL Series II Car Subwoofers w/ Selectable Impedance | Product Overview
  • Harman International: The Pursuit of Great Sound

Customer Ratings & Reviews

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Love it!

I love this sub / box combo. It is built correctly and fills my car with beautiful, powerful, clear bass. Harman builds great products. If you research the specs of the sub, it has very low inductance. That means that it will blend well with your other speakers. The slipstream port is great and I do not hear any port noise. Can change the impedance from 2ohms to 4ohms at the flip of a switch on the outside of the box, which is an excellent feature. It's a bit expensive but well worth it. This generation of JBL boxes are better than the last generation. Better frequency response and features.

By Jason on October 29, 2015 checkmarkIcon Verified purchase


found this helpful.

Can't go wrong with JBL S2-1224SS

Price is very fair for what you get. A well-built ported box with slipstream port and a subwoofer with plenty of 'juice'. I'm pretty new to car audio upgrades so having the sub already in an enclosure that has been built to spec by Harman (JBL) is reassuring. Other deciding factors included 2-4 ohm switch on the outside of the enclosure, good form factor, and nice black/orange aesthetics.

As others have said this sub outperforms what you would expect for a single 12" sub

By Anonymous on May 21, 2019


found this helpful.

Nice tight low bass.

Amazing bass for the price. Definitely lower then their 12" Basspro powered subwoofer. I would highly recommend it. I'm running it at 4 ohm load. Cant imagine what it would sound like with even more power.

By Tim on November 19, 2017 checkmarkIcon Verified purchase


found this helpful.

Jbl s2-1224ss

This thing slams.. Very small box but def loud output. Almost too much bass for my car. Love the fact that you can run either 2 or 4 ohms. Very well made box. Would buy again without hesitation.

By BobbyDigital5_0 on March 14, 2016 checkmarkIcon Verified purchase


found this helpful.


Extremely accurate and musical. Sounds like a sealed box, but the bass is loud like a ported box.

By Anonymous on August 6, 2018


found this helpful.

Speaker box

Speaker is to big for trunk
But sounds great for the price

By Mustangs on May 7, 2016


found this helpful.


I love it! More powerful than i expected. Great value

By Jessie on April 8, 2018


found this helpful.


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This item is frequently compared to these items

JBL S2-1024SS

• 250 Watts RMS
• 1000 Watts Max
• Nominal Impedance: Single 2 or 4 ohm
• Polypropylene Cone
• Nitrile Butadiene Rubber (NBR) Surround
• Slipstream port design with double-flared design
• Frequency Response: 30 ~ 175 Hz



Related Searches

S2-1224SS small

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Price: $259.90

Essential add-ons
NVX Sound Dampening Trunk Kit (SDTK20)

20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)



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