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Polk Audio SR124

12" Single 4 ohm Signature Reference Series Car Subwoofer

Discontinued
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Polk Audio SR124

12" Single 4 ohm Signature Reference Series Car Subwoofer

$259.99

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25 ft. of Streetwires 12 Gauge Speaker Cable

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

$37.85

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40 Square Feet of Sound Dampening Material

Thicker than the competition, complete sound damping kit for entire vehicle! Use for trunk, doors, roof and floor.

$97.99

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

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

$7.99

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  • 12" Single 4 ohm Signature Reference Series Subwoofer
  • Power Handling:
    • Peak: 1400 watts
    • RMS: 700 watts
  • Impedance: Single 4 ohm
  • Dual progressive roll spiders precisely control cone for maximum excursion in tight detailed musical bass
  • Catenary shaped ABS Cone which provide rigidity, strength, and balance while maximizing stiffness and minimizing flex
  • Dynamic Balanced Driver state-of-the-art technology developed to reduce distortion and maximize sound quality
  • NBR (Nitrile Butyl Rubber) Surround damps distortion inducing resonance
  • Connected positive/negative terminals for easier multiple subwoofer configurations
  • Klippel distortion analyzer tested and optimized motor structure, voice coil alignment and suspension for increased bass performance
  • 2-1/2" Glass/epoxy voice coil former
  • Four layer heavy gauged high temperature aluminum voice coil
  • Voice coil cooling system has extensive network of vents in pole piece and basket for optimal cooling performance
  • Die-cast Aluminum basket
  • Hex-key terminals
  • Frequency Response: 20 - 200 Hz
  • Sensitivity: 88 dB
  • Mounting Depth: 7-5/8"
  • 1-year SonicElectronix.com warranty

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Signature Reference (SR)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
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.
1400 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.
700 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.
Single
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
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
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).
20 - 200 Hz
Sensitivity
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".
88 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.
16.25 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.
Black
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.
ABS Plastic
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.
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.
No
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.
No

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.

Sealed
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.
1.02 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.
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.
1.02 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.
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.
7-5/8"
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.
11"
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.

No

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.
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.
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.
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 – 10.
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
71%
4 Star
14%
3 Star
14%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.7
Features
4.7
Design
4.9
Usability
5.0
munzy

Canada

Overall
Durability
Value
Features
Design
Usability
ok at best..... so far

October 7, 2011

So I have had my polk sr 124 for a week now. I got this sub to use over the winter. My summer sub is a 10w7. The polk is as of right now not even close to my w7. The jl is better all around. But its also 3x the price. It says in the owners manual for the polk that it needs 40 hours to fully break in. Soooo keep an eye out for a review in a month or so. Killer looking sub. Well over 20lbs. I have in a 1.3 cubic ft box after displacement. May look at going ported. Seems to bottom out in this box.... Not too sure why. Running off a jl 500/1. Polk makes really awesome speakers. The mm651 & 6501 smoke anything and I mean anything jl makes. I sooo love the speakers. Not 100% sold on the sub.

10 of 11 found this helpful

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Munzy

Canada

Overall
Durability
Value
Features
Design
Usability
I'm Back

October 23, 2011

Holy Crap, I put this sub in a ported box. And man its ALIVE!!! Sealed is so not the way to go with this sub. I will say that my box is big, 2.1 ft. But its worth it. Low and clean... and it still has punch. Email polk and ask them to send you box plans. I should have never went sealed.... but at least it helped with the breaking in. This is my winter setup. I have a 10w7 for the summer. This sub is very close to my w7. I know it beats the crap out of a W6, which I had and blew in 7 months. If you are thinking about a W7. Get 2 of these for half the price and it will be loud and clean, OH YA 3 YEAR WARRANTY!!! Hw can you go wrong? PS the mm6501 and mm651 are sick sick speakers. If you are looking for a set of mids look at them. 92db, get loud and are clean.

8 of 9 found this helpful

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Paul

Gurnee, IL

Overall
Durability
Value
Features
Design
Usability
Solid Solid Bass!

December 4, 2007

I listened to this sub at a local audio dealer and compared it to the JL Audio 12W7s. The JL's do sound louder and lower, but the sound quality and bass combined out of the Polk SR's is unbeatable! I fell in love with it and found the absolute best price out of SonicElectronix.com. I can't wait to completely put together my system with Polk components.

7 of 8 found this helpful

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Barry

Hurt, VA

Overall
Durability
Value
Features
Design
Usability
Don't Sleep on These Monsters!!!!

October 27, 2011

I have two of these bad boys in a slot port box with a jl audio 1000/1 on them and these subs are AMAZING!!! Polk really made a quality sub with the SR124!!! The sound quality is remarkable!!! Don't sleep on them and they are priced great too!!! They hit extremely hard and can bang with some of the more heavy duty subs out there.

5 of 6 found this helpful

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Scott

Grand Forks, ND

Overall
Durability
Value
Features
Design
Usability
Great Sub

September 29, 2010

I have 2 sr124 and 4 db691 powered by the pa1100.5 and every kind of music sounds great. The subs are hard hitting while producing great bass and sound awesome to every kind of music. Probably the tightest bass I've heard. Won't buy anything besides Polk after this!

5 of 6 found this helpful

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Garrett

Cleveland, OH

Overall
Durability
Value
Features
Design
Usability
Polk is incredible

June 5, 2012

I've had these subs for about 8 months now, and I wanted to wait to post this review until I knew they were for real. These subs bang with the best of them. I took a few days to properly break them in and get them ready to go, and they have never since ceased to dissapoint. I have them in a 5 cubic ft ported box tuned to about 28 hz. They get stupid loud, and even being in a big ported box, they are as tight and as clean as any other sub out there. Used to have alpine, kicker, rockford, hifonics, visoniks, jl, everything, and these polks are by far better than all the rest of them.

5 of 7 found this helpful

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polkmomo

michigan, walled lake

Overall
Durability
Value
Features
Design
Usability
polk sr124

January 24, 2011

I own two polk sr 12s single voicecoil, like always Polk makes good top of the line speakers. I previously owned two Polk momo 12s (mm124) at 500 watts rms each those subs hit extremely low compaired to any other speakers out there.
These new polk sr 12s are louder than my two polk momo's but don't seem to hit as low as the momo's it may be because of the vehicle its in or the box I have them in, I'm powering them with two 800 watt rms 1600 watts max audiobahn a80002T amps for a total of 3200 watts max for the two speakers these amps are an almost perfect match, they take every bit of it and are still screaming for more power. These speakers have great sound quality when put into sealed boxes, if you can afford these I would recomend them over any other top line speaker like the w7 or Kickers you will get way better sound quality outa these speakers compared to the otheres.

4 of 5 found this helpful

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Accessory Tools and Products

Accessories added

25 ft. of Streetwires 12 Gauge Speaker Cable

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

Your Price $37.85

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

40 Square Feet of Sound Dampening Material

Thicker than the competition, complete sound damping kit for entire vehicle! Use for trunk, doors, roof and floor.

Your Price $97.99

Stinger Sound Dampening Bulk Kit

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

Your Price $88.86

Dynamat Sound Dampening Bulk Kit

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

Your Price $159.99

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 $18.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $74.99

1mm All Purpose Solder

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

Your Price $7.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $8.99

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $1.99

Universal 12" Subwoofer Grille

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

Your Price $19.95

Universal 12" Subwoofer Grille

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

Your Price $19.95

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 Polk Audio SR124 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Polk Audio SR124 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Polk Audio SR124 Subwoofers

4 Channel Amp

4 Polk Audio SR124 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

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Product Summary

Manufacturer

Model Number

SR124

UPC

747192112233

Weight

30.00lbs

Internal SKU

sr124

Internal Product ID

7114

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: Polk Audio SR124