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Clarion WF2520

300W 10" WF Series Shallow Mount Single 4 Ohm Subwoofer

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25% Off a Sealed Shallow Enclosure with Your Sub Purchase!

Save 25% when you add an Atrend 10SME Sealed Shallow Subwoofer Enclosure to your Subwoofer purchase. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.




Clarion WF2520



25% OFF

Atrend 10SME


Special Price $28.46 ($37.95 if purchased separately)

Atrend 10SME

10" Single Sealed Ultra Slim Series Subwoofer Enclosure • Premium carpeted Finish • Silver Spring Loaded Terminal Cups • Completely Miter and Dado Panels • Glued and Braced with Fasteners

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Best Bang for Your Buck!
Clarion WF2520
Kenwood KFC-XW1000F
Subwoofer Size
Shallow Mount
Speaker Rating
3-1/8" 3-3/8"
Power Handling
300 Watts 250 Watts
$79.99 $109.95

General Features:

  • 10" Single 4 Ohm WF Series Shallow Car Subwoofer
  • Power Handling:
    • Peak: 1000 watts
    • RMS: 300 watts
  • Reinforced SPP cone
  • Nitrile butadiene rubber high excursion surround
  • Hyper extended rear vented pole piece
  • Linear cotton spider with integrated tinsel leads
  • Custom shallow stamped steel powder coated basket
  • Spring loaded push terminals
  • Heavy duty black aluminum voice coil
  • Aluminized IPP dust cap
  • Top-mount depth: 3-1/8"
  • Sensitivity: 85 dB
  • Also available in Dual-4ohm: Clarion WF2520D
  • 1-year Manufacturer's Warranty

Product History:

Clarion WF2520 thumbnail
(newest, current model)
Clarion WF2510 thumbnail
(previous model, replaced by Clarion WF2520)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
WF (Clarion)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
1000 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
300 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
40 - 1000 Hz
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
83 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
5 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Reinforced SPP Cone
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Nitrile Butadiene Rubber (NBR)
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Single Stacked
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / Vented
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.35 cubic feet
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.45 cubic feet
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.70 cubic feet
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.40 cubic feet
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.60 cubic feet
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
0.80 cubic feet
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.


Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
45 Hz
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
16.004 liters
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 10.
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
3.6 ohms

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating

Kota 360



August 2, 2014

Finally got these Clarion subs hooked up.
They are installed in a MTX Thunderform in a '02 Dakota R/T CC.
Powered them with a Kenwood Mono Block amp KAC-8101D.
I lined the inside of the Thunderform with Dyna Mat.
Very Impressed with the smooth sound from these units.
I was not looking for the big "boom boom" sound that you a lot of now a days, just nice smooth bass to balance out the listening experience.
I would recommend these subs to anyone.

5 of 9 found this helpful

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Mishawaka, IN

Great speakers at a great price!

May 8, 2015

Bought a new touch-screen stereo for my truck and wanted to add a box, amp, and speakers. Got recommendations on several brands and tried to find a good price with a reputable company. Sonic Electronix completely delivered! Thank you!

4 of 8 found this helpful

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Clarksville, tn

Sounds great, good value

September 29, 2014

Sounds good, has plenty of power to to sound great in a crew cab truck.

6 of 12 found this helpful

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excellent subwoofer

January 2, 2014

Excellent product, very good quality, sounds excellent, I refer to anyone who wants quality sound.

5 of 10 found this helpful

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laplace la


October 3, 2013

this is a great sub it hits hard for a shallow mount with a great value i have it bridged on my amp and i love it getting another soon

2 of 7 found this helpful

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Accessory Tools and Products

Accessories added

10" Subwoofer Slim Sealed Enclosure

CARB Compliant, 3/4" MDF Slim Sealed Enclosure Lined with Premium Carpeted Finish

Your Price $37.95

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $44.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $59.99

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $94.95

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $69.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $16.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

Universal 10" Subwoofer Grille

Keep your subwoofer safe from accidental damages with this amazing grill.

Your Price $17.95

10" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

1 Clarion WF2520 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Clarion WF2520 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Clarion WF2520 Subwoofers

4 Channel Amp

4 Clarion WF2520 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Browse 5 questions and 5 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
ANDRE L on Aug 29, 2014
is this speaker waterproof?
A shopper on Jun 21, 2015
Best Answer: Hello ,

The WF2520 is neither "waterproof" or intended for 'marine use'. In fact, most manufactures will hesitate calling their product "waterPROOF" for fear that users will take the extreme to confirm that. However, linked below are our selection of "Marine Subwoofers" which are intended for the use that their name implies, and can be sprayed down, splashed on, wet, etc... Feel free to contact each respective manufacture for further details, as we are authorized with just about all of them.
Reply · Report · Rick MStaff on Jun 22, 2015
· Add Answer · I Have This Question Too (0)
My box I have for my truck says that it has .60 cubic foot per sub and 1.2 cu ft shared chamber. So will these work since it is in between the max and min sealed box airspace?
Max C on Jun 16, 2015
Best Answer: As long as it fits within the required space. The manufacture has a recommended volume that can be found within the manual. I used the minimum and it sounds great. Hopes this helps.
Reply · Report · Marco E on Jun 16, 2015
· Add Answer · I Have This Question Too (0)
hello i buy srg6953 and pair of subs wf2520 and amplifier xc1410 and asked to me if it is sufficient for the pair of subs s or is better buy one more amplifier.?

markoz on Feb 18, 2015
Clarion WF2520
Clarion WF2520
Clarion XC1410
Clarion XC1410
Clarion SRG6953R
Clarion SRG6953R
Best Answer: Hello Marcos,

The Clarion XC1410 is intended to run FOUR Door Speakers, it isn't necessarily intended to run a Subwoofer, especially two, considering its lack of power. It can be done, but you will not get the performance you seek. Please consider a MONOBLOCK for JUST the subwoofers instead.
Reply · Report · Customer SStaff on Feb 21, 2015
· Add Answer · I Have This Question Too (0)
How much air space is best for this sub?
A shopper on Nov 9, 2014
Best Answer: Hello,

Below are the specs you seek.

Optimum Sealed Box Volume
0.45 cubic feet

Optimum Ported Box Volume
0.60 cubic feet
Reply · Report · Customer SStaff on Nov 9, 2014
· Add Answer · I Have This Question Too (0)

Product Summary


Model Number






Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Clarion WF2520