JL Audio C5-525cw

5-1/4" component woofer

  • JL Audio C5-525cw


  • JL Audio C5-525cw


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Item #: 136C5525CW

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Our take on the JL Audio C5-525cw

by Jo Greene
JL Audio

What's a component sub and why would I want one?

A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.

If you're looking to add bass to your ride without sacrificing trunk space, here's a great solution. Pair two of these JL Audio C5-525cw woofers with the right components for fatter, fuller guitar and bass in your soundstage.

JL Audio built this 5-1/4" woofer for extended cone travel so it'll move more air, putting more oomph in your music when the rhythm section kicks in. This C5 Series woofer uses the same patented cooling technology developed for the ZR Series speakers, so it'll play with a wide dynamic range at all volumes.

If you've already got a sub in the back, adding two of these woofers is great for adding some midbass punch in your interior. Even better, install JL Audio's C5-525 5-1/4" component system up front, then use two of these matched woofers in the rear to reinforce midrange and upper bass performance while keeping your soundstage right up front.

To drive this single subwoofer, we recommend a mono amplifier rated between 55 and 110 watts RMS at 4 ohms. For more information, please refer to our article on How to Match Subwoofers and Amplifiers.

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  • 5-1/4" component woofer
  • polypropylene woofer with butyl rubber surround
  • 4-ohm impedance
  • 2-75 watts RMS power range
  • frequency response: 48-5000 Hz
  • sensitivity: 88.5 dB
  • depth: 2-1/4"
  • warranty: 1 year
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Size 5 1/4 -inch
Impedance 4 ohms
Cone Material Mineral-Filled Poly
Surround Material Butyl rubber
Ideal Sealed Box Volume (cubic feet) N/A
Ideal Ported Box Volume (cubic feet) N/A
Port diameter (inches) N/A
Port length (inches) N/A
Free-Air Yes
Dual Voice Coil No
Sensitivity 88.5 dB at 1 watt
Frequency Response 48 - 5000 Hz
RMS Power Range (Watts) 25-75
Peak Power Handling (Watts) 225
Top Mount Depth (inches) 2 1/4
Bottom Mount Depth (inches) N/A
Cutout Diameter or Length (inches) 4 1/2
Vas (liters) 0
Fs (Hz) 0
Qts 0
Xmax (millimeters) 0
Parts Warranty 1 Year
Labor Warranty 1 Year
Product Research
What's in the box?

  • One 5-1/4" Component woofer

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.


Cast Alloy Baskets: The Evolution C5 woofers feature cast alloy woofer baskets and incorporate JL Audio's patented Elevated Frame cooling system. This cooling technology, also found on the flagship ZR component systems and W7 and W6v2 subwoofers, allows air to flow directly across the top plate and onto the voice coil windings to greatly improve linearity at all listening levels.

Motor Structure: The DMA (Dynamic Motor Analysis)-optimized motor structure achieves outstanding linearity.

Woofer Cones: The cone and suspension elements were designed and manufactured by the world-famous Dr. Kurt Müller & Co of Germany. The speakers feature low-mass, mineral-filled polypropylene cones with butyl rubber surrounds. The cone and surround are inherently well damped to deliver an uncolored, neutral bass without any coloration. The speakers are also equipped with symmetrical-roll, hybrid-weave spiders.

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JL Audio C5-525cw Reviews

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5 out of 5

Perfect replacement for 1988 Trans Am factory sub

Written By CLL1, Douglasville, GA on Thursday, September 06, 2012
Crutchfield Customer Review (What's this?)
I purchased these little subs as replacements for the factory units in my 1988 Trans Am GTA I bought new back in the day. They worked GREAT, and sound better than the factory units did. My car uses these small subwoofers in a ported enclosure with its own amp. It wont blow the windows out, but it produces a nice deep tone for a factory stereo. Mine always performed well but succumbed to the ravages of foam surrounds, paper cones and time. Long since out of production, these small subs have been a real chore to find a replacement. I tried some local cheap stuff, but thats just what it sounded like!! These little units from JL were just what the doctor ordered!! They sound awesome! In know that isnt very technical, but its just the way it is. If you need a sub this size...just buy these and be done with it!
Well built. Deep, smooth sound...especially for such a small subwoofer. Looks great, all business...no trendy styling
None...It is pretty hard to go wrong with JL!!
1 out of 1 people found this helpful
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"Coolness Factor"
Build Quality
Ease of Use
Sound Quality
4 out of 5

Remarkably good

Written By Dj_Ize, Riverside, CA on Sunday, February 27, 2011
Crutchfield Customer Review (What's this?)
These subs went into the rear deck lid of my 98 BMW 528i non DSP. The stock setup
was a great setup so I decided to utilize it again and just replace the stock nokia
speakers with some modern sound. Immediately I could tell the difference in sound
quality. The only issue with the install was that I was expecting a direct replacement
when the subs were not alligned properly and I had to reassemble till I dynamated the
stock box before the install cou,d be called a sucess. Totally worth the extra time. Do not
sleep on DynaMat it is worth it. For better sound ensure you have a quality crossover or
mid/low pass EQ on Amp. if you get voice from these you loose bass quality
dramatically. I set them up with the Alpine X Pro X-overs and the stock replacement
Alpine 4x150w Can-Bus Amp.
1 out of 1 people found this helpful
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Add accessories for the JL Audio C5-525cw

It's critical to have good wire, and none is included with the sub. See all categories & accessories

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