Item# S2-1224_
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Additional Information
Series II woofers feature the exclusive SSI™ technology and uses progressive spiders for an improving bass performance and accuracy.
At a Glance:
  • SSI™ (Selectable Smart Impedance)
  • High-roll surround
  • Proprietary cone design
  • Long excursion design
What's in the Box:
  • 1 Woofer 12”
  • Owner’s manual
  • Technical Specifications
Series II woofers delivers the enhanced efficiency and higher output.JBL uses progressive spiders to provide the best possible control at the excursion limits versus much more commonly used linear spiders. The benefit is a far more controlled woofer stroke with far tighter bass characteristics.With high-roll surrounds, proprietary cone design and long-excursion, Series II woofers deliver deep, powerful bass, with greater accuracy than conventional woofer. 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 woofer.
Product Features:
  • 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.
  • High-roll surround
    Series II woofers 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.
  • Proprietary cone design
    JBL subwoofer cones aren’t just built to thump, they’re built to last. Series II woofers feature an exclusive cone design that delivers superior rigidity for long-lasting performance.
  • 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 subwoofer ensures big, deep bass output. Just the way you like it.
Manuals & Downloads:
General Specifications:
12" (300mm)
2 or 4 ohms, switch-selectable
Cutout Diameter
11-1/4" (285mm)
Mounting Depth
6-1/2" (165mm)
Audio Specifications:
93 dB
Power Handling (Peak)
1100 W
Frequency Response
25Hz – 175Hz
Power Handling (RMS)
275 W
S2-1224 is rated 3.8 out of 5 by 4.
Rated 1 out of 5 by from My S2-1224 failed out of the box. I was gifted a new JBL S2-1225 for my Birthday and was sad to hear no more that a crackle from the speaker. No great bass to hear. Tested my amp of an older 12" sub woofer without any issue so the problem resides with the speaker. This is far from the great bass experience I had hoped for. I am open to JBL restoring my faith in the product. When I attempted to return the speaker for a replacement the seller denied the return shipment stating that the item cannot be returned since it requires special transportation and handling which we (Amazon) can't provide. Again, disappointing that a simple speaker in it's original box cannot be returned.
Date published: 2017-01-27
Rated 5 out of 5 by from 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.
Date published: 2018-01-22
Rated 5 out of 5 by from Sehr geiler Bass, hocher Wirkungsgrad und sehr angenehm zu hören.
Date published: 2017-12-03
Rated 4 out of 5 by from Dikke bass Zuiver geluid, en een knallende bass. En ook niet duur!
Date published: 2017-03-06
  • y_2018, m_11, d_13, h_5
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
  • cp_1, bvpage1
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  • loc_en_GB, sid_s2-1224_, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_harmanaudio

Ik zou graag het aantal liters willen weten voor deze luidspreker de diameter voor bass reflex pijp en de lengte

Asked by: dommel
Hi, je hebt een kast nodig met een volume van 70.8 liter (inclusief de driver en de pijp). De pijp moet een diameter hebben van 102mm en een lengte van 298mm. Je vindt dit en meer specificaties ook terug in de handleiding (te downloaden op de product pagina via 'specificaties en ondersteuning' > 'handleiding en downloads').
Answered by: Eric T
Date published: 2018-03-29

Wenn man einen S2-1224 verbaut. Welchen Verstärker würde man am besten verwenden?

Asked by: Luki4499
Hallo, vielen Dank für Ihre Anfrage. Wir würden Ihnen hierfür den GTR-601 oder Club 5501 empfehlen.
Answered by: Justin G
Date published: 2018-05-11

So If I got 2 of these S2-1224's What amp would I need...each is 275rms, 550 as a pair. 75% - 412.5 - 150% - 825. Would a GTR-601 work?

Asked by: Jordan J
The S2-1224 will indeed work with the GTR-601. Since the S2-1224s are switch-selectable from 2ohms to 4ohms, just make sure that they are set to 4ohms. Also make sure not to turn up the gain too much on the GTR-601 as it may overpower the speaker.
Answered by: Zoe at Customer Service
Date published: 2017-12-06

Hey! My older JBL GT5-2402BR woofer played its last tune the other day, and i was wondering if i buy two if these (S2.1224), would it fit into the box?

Asked by: Digi
Hi Thank you for your question I'm sorry to say that - i do not have the cut out diameter and available mounting depth for your old device. but since you have the box you can check if it will fit if you get the dimensions from the user manual for the s2.1224, which you can get of the JBL web-page. I hope this answer your question have a nice day
Answered by: Mogens
Date published: 2017-12-02

What is the air space needed for 1 in a sealed box.

Asked by: Driveline
The volume of the box should be 0.75 cubic feet (21.20 liters) including driver displacement.
Answered by: Joe G at Customer Service
Date published: 2017-12-02

hej jbl jeg ville spørge om den her bas kan passe i en citroen saxo 

Asked by: overgaard
Hej. Jeg beklager, men vi har ikke nogen oversigt over hvilke bilhøjttalere som passer i hvilke biler. Hvis ikke Citroen kan hjælpe, er der vel ikke anden mulighed end at måle, om det er muligt.
Answered by: Bo Harman
Date published: 2017-12-02

Can I use this speaker to replace the one in my GTO-1204BR box? 

Asked by: gino
thank you for your question, yes you can use this as a replacement from your old subwoofer replacement
Answered by: Randy at JBL
Date published: 2017-12-02

Will fit 2002 GMC

Asked by: Cliobob
Thank you for your question, depending on the cab size of your trunk size this is a subwoofer that you will either need a box or use you trunk space as a speaker box.
Answered by: Randy at JBL
Date published: 2017-12-02
  • y_2018, m_11, d_13, h_5CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_10
  • loc_en_GB, sid_s2-1224_, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_harmanaudio

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