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Polk Audio MM1540

15" Single 4 ohm Marine Certified Mobile Monitor Series Car Subwoofer

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  • 15" Single 4 Ohm Mobile Monitor Series Subwoofer
  • Power Handling:
    • Peak: 850 watts
    • RMS: 425 watts
  • Impedance: Single 4 Ohm
  • Polymer woofer cone
  • Butyl rubber woofer surround
  • Nickel plated heavy duty input terminals
  • High-tech carbon composite baskets
  • Klippel optimized components optimizes the motor structure, voice coil alignment and suspension
  • High temperature 2" copper voice coil and polyamide Former
  • Frequency response: 18-150 Hz
  • Sensitivity: 93 dB
  • 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.
Mobile Monitor (Polk Audio)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
15"
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.
850 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.
425 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).
18 - 150 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".
93 dB
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
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.
Polymer
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.
Butyl Rubber
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.
Optional (Accessory required and sold separately)
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.

Ported / Vented
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.
1.5 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.
1.5 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.
4-5/8"
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.
13-7/8"
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
75%
4 Star
25%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.3
Value
4.5
Features
4.5
Design
4.5
Usability
4.8
Kyote

Lansing, MI

Overall
Durability
Value
Features
Design
Usability
loud and low

July 27, 2013

Polk has a winner with this 15! I'm running a single with a sealed box in a small SUV. 500 true watts to this sub allows it to overpower my six full range speakers that are getting 65 watts a piece. The bass is so low it messes with my ears and like I said drowns out the lyrics and music when pushing it. In a sealed box this sub only needs 1.5 cubes, which means I'm buying another one and will still have room for my groceries.
Also the tiny magnet is rare earth, it doesn't need to weigh 300 ounces. Technology has advanced, go with it.

0 of 0 found this helpful

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Subhumper

Golden CO

Overall
Durability
Value
Features
Design
Usability
Favorite sub so Far

July 7, 2012

This is a great subwoofer, I've owned it for a year now so its time to write a review. I wanted a efficient sub that could pound with great sound quality and this is it. I have it in a half top jeep so the sub is partly exposed to the elements, no problem there as it is a marine certified sub. I put it in the recommended sealed enclosure, which is not too big of a box at all for a 15 inch sub, which is a good thing for space. During the break in period I hardly had to put 200 rms watts to this thing and it was loud. Now that its broken in, it sounds even better and takes some more power and gets louder. Very power sensitive, hardly have to turn up the sub knob on my 400 rms watt amp at all. The sub sounds wonderful, it hits tight like a good 12 but with depth of a 15. works out beautifully for my setup. Blends well with my 6.5 inch speakers. For anybody wanting to really pound, you could hook up 2 of these and hardly need a 800rms watt amp. The sound quality is awesome, I've owned a kenwood sub, a couple of p2 rockfords, a kicker sub, but this polk is way better and my favorite, I love it. For the price you're definately getting your moneys worth for sure. Great sound quality and capable of serious output for only 425 watts. The build quality is great and the woofer is tuff. Also my jeep is not sealed so bass escapes the cab, but it is still plenty loud for me. If put in a trunk you'll hear and feel it well. Sound quality is just very nice, doesnt sound like a cheapy overly boomy sub, just has a great sound is all i can say. Sounds great with any music. Switched to some classical and the sub sounded rich and lovely, switch to some Ice Cube and it hits with authority. too long of a review already, if you're on the fence, just buy the darn thing.

0 of 0 found this helpful

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AudioVisions

Lake Forest, CA

Overall
Durability
Value
Features
Design
Usability
Great Product! Worked Great!

May 11, 2011

Very Durable - Polk makes great speakers!

0 of 0 found this helpful

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Pete

Austin, TX

Overall
Durability
Value
Features
Design
Usability
They said a 15" couldn't be done in an earlier GMC/Chevy Crew Cab Pickup!

March 6, 2011

I own a 2005 GMC crew cab and wasn't too happy with the bass from four ported 9" subs. The bass was very deep but way too boomy for my taste. So, before I purchased this speaker as a sealed box replacement, I modeled it in a sealed box design using AJboxdesigner which is free off the net and it modeled very well. I also chose it for the efficiency. If my memory is correct, Polk recommends ~1.5 cu ft min. but I gave it just over 2 cu ft using as much space as possible behind the rear seat for a lower Qts of around 0.8. I filled the box loosely with lightly pulled fiberglass insulation. After some fine tuning on my Alpine 9861 DVD in dash with an PXA-H701 audio processor, I was very happy with the overall sound of the bass. If you own a earlier chevy or GMC crew cab truck as I do, the box design is very difficult to fit this speaker and I probably should have chosen three of the MM 10s or MM 12s instead. Yes, this 15" speaker is somewhat of a shallow woofer but the front extends out more than I thought which made the sub box tricky to build and fit this speaker as you have to recess it on the front box baffle 1/2" and if you aren't careful, teh rear magnet will hit the back of the box. My only other complaint is that I wished the speaker was in a diecast basket instead of plastic but that would have increased the overall cost of the speaker considerably.

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Accessory Tools and Products

Accessories added

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

25 ft. of Streetwires 12 Gauge Speaker Cable

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

Your Price $44.95

Dynamat Sound Dampening Trunk Kit

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

Your Price $109.95

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

12 oz. Can of Adhesive Spray

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

Your Price $6.99

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

Car Stereo and Speaker Installation Tool Kit

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

Your Price $14.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

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

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

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

1mm All Purpose Solder

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

Your Price $8.99

15" Protective Waffle Metal Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe with its durable metal construction!

Your Price $6.99

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

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Polk Audio MM1540 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Polk Audio MM1540 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Polk Audio MM1540 Subwoofers

4 Channel Amp

4 Polk Audio MM1540 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

MM1540

UPC

747192114619

Weight

17.00lbs

Internal SKU

mm1540

Internal Product ID

19261

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 MM1540