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JBL Club 1224 Club Series 12" component subwoofer with switchable 2- or 4-ohm impedance

Item # 109CL1224M

JBL first began manufacturing audio equipment in 1946, and they've been responsible for some of the major...

JBL first began manufacturing audio equipment in 1946, and they've been responsible for some of the major...

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3 questions - 4 answers

Item # 109CL1224M

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About the JBL Club 1224

Bob Bihlmayer

Quality and versatility

JBL first began manufacturing audio equipment in 1946, and they've been responsible for some of the major advancements in sound reproduction and reinforcement since then. Their latest Club Series car subwoofers also put the spotlight on versatility, giving you the ability to vary the sub's impedance with the flip of a switch.

Quality and versatility

JBL first began manufacturing audio equipment in 1946, and they've been responsible for some of the major advancements in sound reproduction and reinforcement since then. Their latest Club Series car subwoofers also put the spotlight on versatility, giving you the ability to vary the sub's impedance with the flip of a switch.

Selectable impedance

JBL's Club Series 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 amplifier. This feature makes it easy to reconfigure your system when you add another Club Series subwoofer or upgrade your amplifier.

Ready to rock

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

Subwoofer Wiring Diagrams

To see sample wiring diagrams for all common subwoofer/amplifier combinations, check out this informative article.

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Product highlights:

  • 12" component subwoofer
  • switchable 2- or 4-ohm impedance
  • polypropylene cone with nitrile rubber surround
  • power handling: 275 watts RMS (1100 watts peak)
  • frequency response: 25-175 Hz
  • sensitivity (2.83V at 1 meter): 93 dB
  • top-mount depth: 6-9/16"
  • top-mount height: 11/16"
  • sealed box volume: 0.75 cubic feet
  • ported box volume: 2.5 cubic feet
  • grille not included
  • warranty: 1 year
  • MFR # JBLCLUB1224AM

What's in the box:

  • One 12" Subwoofer (with impedance switch)
  • Owner's manual (English/ French/ Spanish/ Portuguese/ German/ Italian/ Dutch/ Finnish/ Russian/ Swedish/ Danish/ Japanese/ Polish/ Turkish/ Chinese/ Korean/ Indonesian)

Customer reviews for JBL Club 1224

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4.5 out of 5 stars
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More details on the JBL Club 1224

Pat M.

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.) The power handling is the same for either setting; 275 watts RMS/1100 watts peak.

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)
  • Free-Air: The woofer can also be mounted in free air to a baffle board (infinite baffle, no enclosure). When mounted in free air, the power handling is reduced by half (to 137.5 watts RMS).
  • Band-Pass: JBL also recommends a prefabricated band-pass enclosure, but no volume specifications are listed in the manual. Band-pass enclosures often provide the most output available from any amplifier and subwoofer combination, but at the expense of sonic accuracy.

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
Cms (μm/N) 160 160
Mms (g) 155.10 154.90
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

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Customer Q&A

3 questions already asked

Q
I have a bandpass box I built for jbl cs1214 specs. Unfortunately, after years of use, it has blown. Will these work as direct replacement?
andy527  Oct 02, 2023
1 answer
A
Greetings Andy. From what I can see on the older CS1214s this Club series is rated for a bit more power and is a bit deeper than the older CS1214. If you have 6 9/16ths of depth to work with. I don't see these being a problem.
hogan  Oct 02, 2023 (Staff)
Q
Still pretty new to this stuff but what guage wire would you need for this and how would you wire it to an enclosure?
alberto  Aug 05, 2023
1 answer
A
The wire gauge used will depend on the length and watts RMS being sent through it. Since wiring inside subwoofer boxes are often 18" or less, it would be ok to use 16 or 14 gauge speaker wire. There should be a terminal on the box that this wire connects to. You can find our speaker wire here: https://www.crutchfield.com/g_50600/Car-Speaker-Wire.html If you are building your own box, the terminals we offer can be found here: https://www.crutchfield.com/g_743/Build-Your-Own-Subwoofer-Box.html
jason  Aug 05, 2023 (Staff)
Q
Want to purchase two JBL Club 1224 12" subwoofers, I'm not much of a sound system guy what wattage amp would I need to power both? any help in the right direction will help
carlos  Jan 17, 2021
2 answers
A
Hey Carlos, I would like to mention that the RMS of each speaker is only 275w RMS, running the subs in parallel will require 550w RMS at @ohms (while in 4 ohm mode on the sub) The Alpine S-A60M would be a perfect match for the subs.
christian  Feb 05, 2021
A
I'd say 1000W-1500W to keep the subs stable. JBL Club 5501 would be a perfect candidate.
joseph  Jan 17, 2021

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