S2-1224SS
$259.95
4.7 (13)
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Features

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Slipstream™ port design

At high sound pressure levels, air flow turbulence inside a vented enclosure’s port can create noise that sounds like woofer break up. The patented Slipstream port in Series II enclosure uses a double-flared design to minimize turbulence, and eliminate unwanted vortices.

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SSI™ (Selectable Smart Impedance)

Most car audio system designs call for 2- or 4-ohm impedance. Series II 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.

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High-roll surround

Series II enclosure incorporate a high-roll surround that provides superior cone edge suspension while maximizing excursion. It not only increases the cone area, it also provides remarkable linear stability and reliability.

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Proprietary cone design

JBL subwoofer cones aren’t just built to thump, they’re built to last. Series II enclosure feature an exclusive cone design that delivers superior rigidity for long-lasting performance.

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Long excursion design

The longer a subwoofer’s excursion is, the more air it moves. And the more air it moves, the more bass you feel. The long-excursion design in Series II enclosure ensures big, deep bass output. Just the way you like it.

Specs & Downloads

Item# S2-1224SS

Description

Our patented port brings the bass, not the noise.

Series II enclosure deliver the enhanced efficiency and higher output of a vented enclosure, without the distracting noise or “chuffing” generated by a port. The patented Slipstream port dramatically reduces port noise at high sound pressure levels by minimizing airflow turbulence. With high-roll surrounds, proprietary cone design and long-excursion, Series II enclosure deliver deep, powerful bass, with greater accuracy than conventional ported boxes. And the exclusive SSI™ (Smart Selectable Impedance) switch lets you choose 2- or 4-ohm impedance for maximum configuration flexibility. It’s everything you want in a compact, easily installed enclosure.

General Specifications

Description
12" (300mm) Slipstream ported enclosure
Impedance
2 or 4 ohms, switch-selectable

Audio Specifications

Power Handling (RMS)
275 W
Power Handling (Peak)
1100 W
Frequency Response
25Hz – 175Hz
Sensitivity
93 dB

Documents & Downloads

Reviews and Q&A

Customer Reviews

Rated 5 out of 5 by from OMG- The answer to all your needs. I wasted so much money and time looking for a compact box that would sound just right. whats right you ask? if your like me that goes from Rap (NAS ) to Rock (Strokes) to Movie Score (Mission Impossible) to Electronic (Apashe) you need and want a sub-woofer that hits deep for the rap and just clear thumps of a drum-set. THIS BOX IS IT!. a lot of the boxes i tried where too focused on just deep lows sure for a song like deep cover or get down they sound great hit hard but when you changed over to "Thunderstruck" or "Float on" they would not respond and the music would sound flat. with this box you are covered all around! wish they had a two speaker version with this exact woofer at 4 ohms
Date published: 2018-05-31
Rated 4 out of 5 by from Good Value I like the sub because it reaches deep lows without the voice coil bottoming out. It is also good value for money, with a high power rating. It is a bit large however, and takes up rather a lot of boot space. My minor niggles are a) no metal, open grille, cone protection: b) no handles, c) no pro cable socket, and d) slighly low sensitivity. It is great though! I nearly bought a Focal flax 10" driver for about £149 and a box for £40 but these JBL speakers are properly engineered and conveniently ready for use! The Series 3 digitally powered monitor loudspeakers; with sharp crossover slopes, are also a great buy at about £228 Sterling a pair.
Date published: 2017-11-27
Rated 5 out of 5 by from Good sound from premade enclosure I bought this to add on to factory stereo paired with a jbl 600/1 old school amplifier that is built like a tank. Perfect combination. Has a really good kick. Box is light so I not sure about how durable it is but for now it works great. JBL makes great stuff for a reasonable price.
Date published: 2017-11-20
Rated 5 out of 5 by from Hits Hard!!! This subwoofer hits hard!!! That's all i got to say... Yeah Boi.
Date published: 2017-02-02
Rated 5 out of 5 by from S2 12” This subwoofer plays great deep bass and handle heavy bass very happy with sub.
Date published: 2018-03-29
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Product Q&A

Hi, I just ordered the S21224SS at best buy store and will ship in the next few days, just wanna know which one jbl amplifier is the bestand compatible for that subwoofer? Thank you

Asked by: Allhan
From what I’ve seen in this thread and what I’ve researched the GX-A3001 is a good amp for this. Idk if that’s JBL but I’ve heard good things about it.
Answered by: JMP23
Date published: 2021-06-06

What is the length/width of this sub box from the front from side to side? 

Asked by: Avenger FC
Thank you for your questions, here is the dimensions your looking for? Dimensions: Length: 23-5/8" (600mm) Width: 13" (330mm) Height: 16-3/8" (415mm)
Answered by: Randy at JBL
Date published: 2021-06-06

What is the best amp from JBL to pair up with this sub? 

Asked by: Cameronc
The S2-1224SS can handle 275 watts of RMS power handling. This means that any sub amp with an impedance of 2 or 4 ohms and a power output of 275 watts will work fine with these speakers.
Answered by: Joe G at Customer Service
Date published: 2021-06-06

Is there a different RMS at 2ohm and 4ohm settings?

Asked by: nbeda
The S2-1224SS can handle 275 watts of RMS power handling. This means that any amp with an impedance of 2 or 4 ohms and a power output of 275 watts per channel will work fine with these speakers. That said, the power that the speaker can handle remains the same whether it's switched to 2 or 4 ohms.
Answered by: Joe G at Customer Service
Date published: 2021-06-06

I have two sets GTO609C and a single S2-1224SS (over kill for a 1968 Volvo 122 Amazon). I was considering a GX-A604 to drive the two sets GTO609C and a GX-A3001 to drive the S2-1224SS. Am I in the right direction or is there a better solution?

Asked by: Kevin Campher
Yes you definitely are in the right direction. The amps would work perfectly with your speakers .
Answered by: Mario at Customer service
Date published: 2021-06-06

Is it supposed to make a popping sound when I first turn the car on? It’s a S2-1224SS and it only started doing this about a week or two ago and I want to figure out why the popping sound. Recently had my alternator changed too, if that helps

Asked by: xDavid76
Thanks for bringing this to our attention. Our JBL S2-1224SS speaker system should not make a popping sound when you start the engine of your car. Your best course of action, for now, is to bring your automobile to the professionals who installed the unit or you can call our customer support so we can refer you to an authorized service center and have the unit diagnosed.
Answered by: Ray at Customer Support
Date published: 2021-06-06

Hi I want to buy this subwoofer I see jbl recommended amplifier is 200 rms4ohm and sub. is 275 4ohm. Can someone please explain why 3001 is recommended to this sub. And no other amp with at least 300rms. I want to run this at 4 ohms. Ty

Asked by: Robertho
We would like to work with you directly to help with your inquiry. 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: Gian at Customer Service
Date published: 2021-06-06

What is the size of the box?

Asked by: Stepper
Here are the dimensions of our S2-1224SS (L x D x H): 23-5/8" x 13" x 16-3/8" 600mm x 330mm x 415mm
Answered by: Customer Support
Date published: 2021-12-23
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