30 cm (12 inch) subwoofer, with double magnet suitable for enclosed, bass reflex and bandpass boxes


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With an impressive 1000 watts of peak power handling, the JBL CS Series CS1214 subwoofer outperforms anything you may have heard before. Its polypropylene woofer cone is light as a feather, ensuring maximum efficiency and performance. A progressive spider provides better control at excursion limits than a linear spider ever could, reducing distortion at even the highest output levels. Go ahead and use the CS1214 with a small amplifier. You’ll have exquisite bass reproduction. Sure, it’s the sound in your car. And it matters. JBL knows what your standards are no matter where you are and where you go – and they’re our standards too.

Item# CS1214

General Specifications

Series CS Series
Size 12”; (300mm)

Audio Specifications

Sensitivity (2.83V/1m) 90dB
Nominal Impedance 4 ohms
Power Handling (Peak) 1000W
Frequency Response 35Hz-200Hz
Power Handling (RMS) 250W


Mounting Cutout Diameter (in) 11
Mounting Depth (mm) 153
External Diameter (mm) 311
Mounting Cutout Diameter (mm) 279
External Diameter (in) 12-1/4
Mounting Depth (in) 6-1/16
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Spec Sheet (EN)

English 861 KB
  • (1) CS1214 Subwoofer
  • (1) Owner's Manual

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1 Year

Note: the Warranty Card provided with your JBL product contains the full terms and conditions of your warranty.

Unless a different warranty period is stated in the Warranty Card provided with your JBL product, JBL warrants for a period of 1 year (5 years for any non-powered speakers) from the date of retail purchase by the original end-use purchaser, that this product, when delivered to you in new condition, in original packaging, from a JBL authorized reseller and used in normal conditions, is free from any defects in manufacturing, materials and workmanship. Refer to the Warranty Card provided with your JBL product for specific details including what is not covered along with other terms and conditions.

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CS1214 is rated 5.0 out of 5 by 9.
Rated 5 out of 5 by from Low price, nice sound, good buy Box 37L Freq. 37hz 2x6,6mm port diameter, amplifier OSIO HPA4000 150W RMS. The small box size is perfect for a car. Perfect for daily use.
Date published: 2017-06-12
Rated 5 out of 5 by from Love the look Bought this for my son and I think I use it more than he does
Date published: 2017-04-28
Rated 5 out of 5 by from I love this sub. Cheap and very effective. I love this subwoofer! It cost me 48 dollars and it sounds like a $200 sub. Sounds amazing and pushes bass like nothing.
Date published: 2017-04-27
Rated 5 out of 5 by from great;and nice this sub woofer kicks perfectly;and has a very good price. please Continue to produce this sub woofer;never stop!
Date published: 2016-12-10
Rated 5 out of 5 by from They hit hard I bought 1 not wanting as much sound as in the past but this speaker hit hard.I'm buying 2 more for the house
Date published: 2014-12-13
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So I want to buy two CS1214 what amp should I get to get the best prefomence. Wile supporting both subs?

Asked by: PaytC
Our best option would be the GTX-500 mono-block sub amplifier. When connecting two CS1214’s to this amplifier, the GTX-500 will see a 2-ohm load and drive the speakers up to 250W each speaker which the CS1214’s is actually what is rated to safely handle. This ensures that you maximize the capacity of your speakers, but not overpowering them.
Answered by: Ren at Customer Service
Date published: 2017-12-02

What would be a good amp to support one CS1214?

Asked by: Dave15
This subwoofers can handle up to 250W of power @ 4-ohms. Any amplifier that can roughly deliver that much power would be great. We recommend either going with the GX-A602, it can be bridged to drive a 4 ohms with 170 watts RMS. If you are considering driving multiple speakers alongside the CS1214 the CLUB 4505 is a good choice. It can drive a 4 ohm sub with 320 watts RMS.
Answered by: Mark at Customer Service
Date published: 2017-12-02

It will fit my car but where and how is the best place to locate, trunk, floor, other?

Asked by: HEGAWN2
This speaker is sold as a raw driver without an enclosure because most setups will be a customer installation. You can put the sub anywhere you decide works for you. For example, if you want to build an enclosure that will fit on the floor in the back seat, that will be fine. But most people will opt to install it in the trunk.
Answered by: Memen at Customer Service
Date published: 2017-12-02

For 2 of these 12" subs what size box would you recommend and what amp would be ideal? Thanks :)

Asked by: AndyClaz
Hi Thank you for the questions you should calculate the cabinet size for one driver using Thiele/Small parameters and double the cabinet volume and the number Bass-reflect tubes. I would recommend the GTR-1001 or GTR-601, The GTR-1001 would be the best one. If you have further questions, please contact our help-desk.
Answered by: Mogens
Date published: 2018-01-13

how many cubic feet should i give each speaker

Asked by: timtom
If you are looking for tight accurate bass, your best bet is a 1 cubic foot sealed enclosure. If you are running 2 speakers in the same box, all you have to do is double the space, making it 2 cubic feet.
Answered by: Erik at Customer Service
Date published: 2017-12-02

If I am putting two of these in my car what would be a good amp to go with it?

Asked by: NickyG03
These subwoofers can handle up to 250W of power @ 4-ohms. So ideally, any amplifier that delivers this much power would be great. A recommendation would be the GX-A604, a four-channel amplifier that can drive 170W per bridged channel @ 4-ohms. The GX-A604 can already accommodate both of your CS1214. Or another option would be the GX-A3001, a mono-amp that can drive up to 200W per subwoofer, you need two of these if this is what you prefer.
Answered by: Ren at Customer Service
Date published: 2017-12-02

Just a I have a Alpine mvr-p300 with 150 RMS at 4 ohms would this be enough for the cs1214 that holds 250 RMS or would the 10 inch that holds 125 RMS be better.

Asked by: Driveline
Absolutely. The CS1214 can handle the power rating of the Alpine MVR-P300. Any car amp with a power output of 250 watts per channel or less will work fine with these speakers.
Answered by: Joe G at Customer Service
Date published: 2017-12-02

I have a 4 channel amp with the following spec's: 3000 watts peak power 800 watts @ 2 ohms 550 watts @ 4 ohms 300 watts @ 8 ohms Will I be able to power 4 of these? I will likely bridge in pairs of 2.

Asked by: pbrookes
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: Steven M
Date published: 2018-01-03
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