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  5. Polk Audio 8" Car Subwoofers

Polk Audio 8" Car Subwoofers

Polk Audio 8" car subwoofers will provide your vehicle with the bass and lows that you desire.

Small 8" car subwoofers are excellent for vehicles that have extremely limited space or for replacing factory 8" subwoofers. They are ideal for pumping out bass without sacrificing trunk space.

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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.
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.
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Refers to the diameter of the subwoofer, measured in inches.
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.
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.
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.
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.

This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
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".
This is the color of the speaker's or subwoofer's cone.
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.

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.
Polk Audio DB 842 DVC (DB842DVC)

750W Peak (250W RMS) 8" DB+ Series Dual 4 ohm Car Subwoofer

DB 842 DVC main
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Polk Audio DB 842 DVC (DB842DVC)

750W Peak (250W RMS) 8" DB+ Series Dual 4 ohm Car Subwoofer

• 250 Watts RMS
• 750 Watts Max
• Polypropylene Cone
• Santoprene Rubber Surround
• IP56 Marine Certified
• Tested for salt-fog, UV and humidity
• Quick-Connect Wire Terminals

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FREE 2-day shipping to VA. Get it Thu, Mar. 30

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List $209.99
$89.00

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Only 1 Left!

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Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

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

$69.99

Add
Six Function Digital Multimeter

Perfect addition to any toolbox

$8.99

Add
View all Accessories Continue to cart
Polk Audio MM 842 SVC (MM842SVC)

900W Peak (300W RMS) 8" MM1 Series SIngle 4-Ohm Car Subwoofer

MM842 SVC main
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Polk Audio MM 842 SVC (MM842SVC)

900W Peak (300W RMS) 8" MM1 Series SIngle 4-Ohm Car Subwoofer

• 300 Watts RMS
• 900 Watts Max
• Composite Cone
• Santoprene surround
• Fiberglass-Reinforced ABS Basket
• IP56 Ultra Marine Certified
• Vented Pole and Basket Structure

shipping truck icon
FREE shipping to VA. Get it Tue, Apr. 4

empty

2
List $209.99
$149.00

Available

Ships in 10-14 days

Add to Cart

• 300 Watts RMS
• 900 Watts Max
• Composite Cone
• Santoprene surround
• Fiberglass-Reinforced ABS Basket
• IP56 Ultra Marine Certified
• Vented Pole and Basket Structure

Item Added to Cart.

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

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

$69.99

Add
Six Function Digital Multimeter

Perfect addition to any toolbox

$8.99

Add
View all Accessories Continue to cart
Polk Audio DB842SVC (DB842SVC)

750W Peak (250W RMS) 8" DB+ Series Single 4-ohm Car Subwoofer

DB 842 SVC main
Go to item page
Polk Audio DB842SVC (DB842SVC)

750W Peak (250W RMS) 8" DB+ Series Single 4-ohm Car Subwoofer

• 250 Watts RMS
• 750 Watts Max
• Polypropylene Cone
• Santoprene Rubber Surround
• IP56 Marine Certified
• Tested for salt-fog, UV and humidity
• Quick-Connect Wire Terminals

shipping truck icon
FREE 2-day shipping to VA. Get it Thu, Mar. 30

empty

List $209.99
$89.00

In stock

Only 1 Left!

Add to Cart

Item Added to Cart.

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

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

$69.99

Add
Six Function Digital Multimeter

Perfect addition to any toolbox

$8.99

Add
View all Accessories Continue to cart
Polk Audio MM 842 DVC (MM842DVC)

900W Peak (300W RMS) 8" MM1 Series Dual 4-Ohm Car Subwoofer

MM 842 DVC main
Go to item page
Polk Audio MM 842 DVC (MM842DVC)

900W Peak (300W RMS) 8" MM1 Series Dual 4-Ohm Car Subwoofer

• 300 Watts RMS
• 900 Watts Max
• Composite Cone
• Santoprene surround
• Fiberglass-Reinforced ABS Basket
• IP56 Ultra Marine Certified
• Vented Pole and Basket Structure

shipping truck icon
FREE shipping to VA. Get it Tue, Apr. 4

empty

List $209.99
$149.00

Available

Ships in 10-14 days

Add to Cart

• 300 Watts RMS
• 900 Watts Max
• Composite Cone
• Santoprene surround
• Fiberglass-Reinforced ABS Basket
• IP56 Ultra Marine Certified
• Vented Pole and Basket Structure

Item Added to Cart.

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

$14.99

Add
20 Square Feet of Sound Dampening Material

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

$69.99

Add
Six Function Digital Multimeter

Perfect addition to any toolbox

$8.99

Add
View all Accessories Continue to cart
 
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    Polk Audio 8" Car Subwoofers Information

    Polk Audio carries a range of 8" car subwoofers for the bass you've been looking for. Polk Audio engineers competition grade subwoofers that will both satisfy and last. Great for subwoofer boxes and other installations, these 8" Polk Audio subs are an easy choice.
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