Chat
Contact us
Close contact box
Connect ID #
450 104 897 4
Connect ID #
450 104 897 4
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  
Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

Thank you. We will be calling you .
We're sorry. We have encountered a problem.

JBL S2-1224 Series II 12" component loudspeaker with switchable 2- or 4-ohm impedance

Item # 109S21224

Since JBL first began manufacturing audio equipment in 1946, they've always emphasized quality.

Since JBL first began manufacturing audio equipment in 1946, they've always emphasized quality.

California customers:
Please click here for your Proposition 65 warning.

3 questions - 4 answers

Item # 109S21224

About the JBL S2-1224

Bob Bihlmayer

Quality and versatility

Since JBL first began manufacturing audio equipment in 1946, they've always emphasized quality. Their Series II subwoofers also put the spotlight on adaptability, with the ability to vary the sub's impedance with the flip of a switch.

Quality and versatility

Since JBL first began manufacturing audio equipment in 1946, they've always emphasized quality. Their Series II subwoofers also put the spotlight on adaptability, with the ability to vary the sub's impedance with the flip of a switch.

JBL S2-1224 12" Component Subwoofer

The handy impedance switch eliminates the need to rewire your system when you add a second sub.

Selectable impedance

JBL's Series II S2-1224 sports a 2” diameter voice coil for exceptional power handling, while airflow from the cone's movement cools the voice coil for increased reliability. The sub's Selectable Smart Impedance (SSI™) switch allows you to change impedance from 2 ohms to 4 ohms, so you can optimize the sub for your system and the amplifier. This feature makes it easy to reconfigure your system when you add another Series II subwoofer or upgrade your amplifier.

This sub features a polypropylene cone for enhanced stiffness and an nitrile rubber surround for additional smoothness and responsiveness, while the stamped steel basket adds rigidity and its vented construction helps keep things cool. The S2-1224 handles up to 275 watts RMS (1100 watts peak), and works equally well in sealed or ported enclosures, another example of its versatility.

READ LESS

Product highlights:

  • 12" component subwoofer
  • switchable 2- or 4-ohm impedance
  • polypropylene cone
  • nitrile rubber surround
  • power handling: 275 watts RMS (1100 watts peak)
  • frequency response: 25-175 Hz
  • sensitivity (2.83V at 1 meter): 93 dB
  • mounting depth: 6-1/2"
  • mounting height: 11/16"
  • sealed box volume: 0.75 cubic feet
  • ported box volume: 2.5 cubic feet
  • warranty: 1 year
  • MFR # S2-1224

What's in the box:

  • One 12" Subwoofer (with impedance switch)
  • Owner's manual

Scratch & Dent items may be missing non-essential accessories. In some cases the manufacturer's accessories have been replaced with generic equivalents.

See the difference between "Open Box" and "Scratch & Dent" Outlet items

Customer reviews for JBL S2-1224

Loading reviews...

Average review:

5.0 out of 5 stars
12 reviews

Thanks for submitting your review

Filter by rating

Customer photos

Customer provided image, click to load a larger version.
Customer provided image, click to load a larger version.

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee review (What's this?)

Reviewed on Samsung.com

This review was collected as part of a promotion

Pros:

Cons:

Crutchfield response
Customer provided image, click to load a larger version.
<< >>

Product Research

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.)

NBR Surround: Nitrile butadiene rubber (NBR) is a synthetic rubber, well-suited for automotive woofer surround applications. It is durable, can withstand a wide range of temperatures (-40 to 226 °F), and is resistant to breakdown due to UV light exposure.

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)
  • Infinite Baffle: The woofer can also be mounted in free air to a baffle board (no enclosure). When mounted in free air, the power handling is lowered to 125 watts RMS.
  • Band Pass: A prefabricated band pass enclosure is also mentioned in the manual as acceptable, but no specific size or tuning recommendations are listed.

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

 
Re (Ω) 2.00 4.40
Le (mH) 1.20 0.81
Sd (cm²) 522.80 522.80
Bl (Tm) 10.30 13.90
Vas (liters) 61.20 59.70
Fs (Hz) 31.90 32.40
Qms 4.64 3.02
Qes 0.59 0.72
Qts 0.52 0.58
Xmax (mm) 10.25 10.25

Loading accessories...

Customer Q&A

3 questions already asked

Q
what kind of box would you recommend for this sub?
jordan  Mar 15, 2017
1 answer
A
This sub can be used in either a sealed (0.75 cubic feet airspace) or ported (2.5 cubic feet airspace) enclosure. The choice is entirely up to you: https://www.crutchfield.com/learn/sealed-or-ported-subwoofer-enclosures.html?search=sealed I hope that helps. My Bio: https://www.crutchfield.com/Support/Bio.aspx?bio=5
ryan  Mar 23, 2017 (Staff)
Q
Is the JBL S2-1224 an SVC or DVC subwoofer?
a  Jul 07, 2016
1 answer
A
Thanks for your question. This product is a SVC. On the product page "Details" tab you'll find this information under "Features and Specs", it is listed as: Dual Voice Coil=No. Hope that helps.
kenneth  Jul 08, 2016 (Staff)
Q
Could I use this as an open air sub in a car? I'm considering mounting it to the rear deck.
aaron  May 22, 2016
2 answers
A
It would physically mount but the sound quality would be poor bc it needs a proper inclosure with the recommended air space to sound properly JBL recommends around 2.5 cu ft.. I personally would avoid at all cost in that manner... On the other hand, using the recommended inclosure space makes this sub sound amazing therefore I wouldn't vary far from mfg specs.. Good luck
channing  May 24, 2016
A
I would suggest not doing that. This SUB is desidned to be used in a baffle. It is designed to work with the back pressure produced in a sealed and ported box. Your rear deck or trunk does not provide that inviorment.
gordon  May 23, 2016

Loading articles...

Compare the sound