12" (300mm) high-performance car audio subwoofer

£189.99189.99 each
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A subwoofer that puts you in the driver’s seat

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.

Item# S3-1224

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
Click here for a complete list of all specs for this product

Spec Sheet

1 MB
  • 1 subwoofer
  • Owner’s manual

Manuals & Downloads

The latest owner's manuals, quick start guides, and documents.

Search Result For ""

S3-1224 is rated 4.5 out of 5 by 6.
Rated 5 out of 5 by from Real BASS from JBL Great sub feeding it 500 RMS. from a JBL MS-A5001 Digital signal processing amplifer
Date published: 2018-02-28
Rated 5 out of 5 by from Deep bass I like this subwoofer on sealed box. It has a very nice bass. I deal with audio systems since I was little. Jbl subwoofers has a great Hz response which mean more bass. I was originally planing to put 2 but 1 is plenty. This set up works great amazing sound . I couldn't be any happier.
Date published: 2017-11-28
Rated 5 out of 5 by from Hits Hard!!! It hits nice and smooth. I put it in a nice enclosure vented box.
Date published: 2017-03-07
Rated 5 out of 5 by from I love it I got these from a local stereo shop. And they are a beast. I haven't even broken them in yet and they have a smoothe strong beat at 2om
Date published: 2017-03-04
Rated 5 out of 5 by from Great quality I just got this today and it's a beast. I can feel it in my chest
Date published: 2015-07-18
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Hi, i just purchased one S3-1224 from JBL Italy and im building the Closed Box suggested in the manual (21.2 Litres).What is the reccomended low cut please?Thankyou in advance. P.S. Ive been customer for 30 years love JBL :)

Asked by: Franco
The recommended frequency response for your JBL S3-1224 is 25Hz-175Hz, You could set your hi-pass to 25Hz which will be fine though setting it to 30Hz would be much more conservative.
Answered by: Ron at Customer Service
Date published: 2018-04-12

Would the club 5501 be a suitable amp to power this sub ? 

Asked by: Izywizy
Hi Izywizy, Yes, you'll be easily able to drive this subwoofer with the Club 5501 amplifier. Just a little extra information: The S3-1224 has no enclosure, so you will have to buy/build this yourself. The Thiele-Small parameters ( technical information on size/dimensions/volume of the enclosure ) can be downloaded from our product page. If you require further information, please contact us on customer.support@harman.com
Answered by: Kay Harman
Date published: 2017-12-02

What is the displacement for the S3-1224? Also, can you recommend an enclosure design tool, as I am going to fit one these "vented" under the rear seat of a 99 Silverado Ext. cab 3 door. (I hope!)

Asked by: Sirinstalalot
The displacement for the S3-1224 is .12 cubic feet. Unfortunately, we don't have our own box design programs/tools but there are definitely 3rd party programs/tools that are widely available which should work nicely. If in any case you need the soft copy of the T/S parameter for the S3-1224, please submit a case at www.jbl.com/support-contact.html and our Customer Service Team will be glad to assist you.
Answered by: Drin at Customer Service
Date published: 2017-12-02

I bought two subwoofer JBL S3-1224 I will install amplifier of 1500wrms in 2ohms to play sera that will not get too strong for both subwoofer?

Asked by: Jeferson
The S3-1224 handles up to 500W at 2/4 ohms. Both speakers connected to the amp will show the amp a 2 ohm load. At 2 ohms, the amp will put out 1500W, 750W to each speaker. Given that the amp is a bit too powerful, this would be a decent match if you don't push it to the hilt. To ensure that the speakers are safe and are not overpowered, we recommend a 1000W car amp at 2 ohms.
Answered by: Joe G at Customer Service
Date published: 2017-12-02

Hi I'm considering one of these subs but was wondering what the recommended sealed enclosure size is? The space I have available is 12inches high by 30inches wide by 15inches deep. 

Asked by: Kevp
Thats alot of space, minus each measurement by 1.5 to simulate having .75 mdf, and multiply all three then divide by 1728, the sealed for this sub is .75 cubic feet which is going to be small, look up how to calculate enclosures or go to kicker box designs as they have alot of usefull information to get you started.
Answered by: Knightmare
Date published: 2017-12-02

I have Alpine MRV-M500 amplifier up to 500 RMS continuous power at 2 ohms and I’m not sure if this subwoofer is compatible? Thank you

Asked by: Allhan
Thank you for your question. The S3-1224 is compatible with your Alpine Amp since the Sub is capable of handling 500W on either 2 or 4 ohms rating.
Answered by: Mario at Customer service
Date published: 2018-09-03

How do you wire 2 of these for a 2ohm load to a mono channel amp?

Asked by: Stanne
We would like to work with you directly to help you with your issue. Please submit a case request at https://www.jbl.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Mario at Customer service
Date published: 2018-01-28

Hi, Can you recommend an amp suitable to power two of these together with maximum performance? Thanks.

Asked by: Boseley
Depends how much money you have, they got the GTR 1000 or Infinity Kappa 1000, if your on a budget id get a rockford prime 1200, pioneer 1200, Jl audio jx 1000. There is alot of legimate companies though but id get the JBL or Infinity to keep the Kardon name as it would sound great with its own brand amp.
Answered by: Knightmare
Date published: 2017-12-02
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