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2007 GMC Sierra Denali

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Subwoofers and enclosures, specifically designed for your 2007 Sierra Denali, as well as universal fit solutions

Overview Upgrade your Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Add Remote Start Independence Day Sale

Subwoofers and Boxes for 2007 GMC Sierra Denali

A subwoofer that works with, or is designed for, your 2007 GMC Sierra Denali will add bass, clarity and depth to your music and system. A quality subwoofer will give realism and an overall rich, complete sound that you otherwise would not get with a factory car sound system.

Custom-fit subwoofer box

Custom-fit Subwoofer Boxes & Enclosures

Get a sub box designed specifically for your Sierra Denali.

Subwoofer bass packages

Universal Subwoofer Bass Packages

These packages include an amp, sub(s), an enclosure and amplifier wiring. They should fit your GMC Sierra Denali, but verify your trunk/rear vehicle area.

Universal Subwoofers

Universal Subwoofers

These sub(s) are perfect for adding to a empty box or custom built enclosure. They should work with your GMC Sierra Denali, but verify your trunk/rear vehicle area.

Universal-fit loaded and powered sub boxes

Universal-fit Loaded Subwoofer Boxes

These boxes include sub(s) and some include an amp. They should fit your GMC Sierra Denali, but verify your trunk/rear vehicle area.

Universal-fit empty unloaded sub boxes

Empty Universal-fit Sub Box Enclosures

These boxes are ready for you to add a sub and amp. They should fit your ride, but verify your trunk/rear vehicle area.

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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.
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.
Series
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.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
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.
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.
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.

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.
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.
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".
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
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.

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.
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Polk Audio DB 1042 SVC (DB1042SVC)

1050W Peak (350W RMS) 10" DB+ Series Single 4-ohm Car, UTV and Marine Subwoofer

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Polk Audio DB 1042 SVC (DB1042SVC)

1050W Peak (350W RMS) 10" DB+ Series Single 4-ohm Car, UTV and Marine Subwoofer

• Peak Power: 1050 watts
• RMS Power: 350 watts
• Impedance: Single 4 ohm
• Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 4.34"
• Sensitivity: 85 dB

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Was $119.99 Details
$79.99

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• Peak Power: 1050 watts
• RMS Power: 350 watts
• Impedance: Single 4 ohm
• Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 4.34"
• Sensitivity: 85 dB

Polk Audio DB 842 DVC (DB842DVC)

750W Peak (250W RMS) 8" DB+ Series Dual 4-ohm Car, UTV and Marine Subwoofer

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Polk Audio DB 842 DVC (DB842DVC)

750W Peak (250W RMS) 8" DB+ Series Dual 4-ohm Car, UTV and Marine Subwoofer

• Peak Power: 750 watts
• RMS Power: 250 watts
• Impedance: Dual 4 ohm
• Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 3.82"
• Sensitivity: 84 dB

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

2
Was $209.99 Details
$79.00

In stock

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Polk Audio DB 1242 SVC (DB1242SVC)

1110W Peak (370W RMS) 12" DB+ Series Single 4-ohm Car, UTV and Marine Subwoofer

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Polk Audio DB 1242 SVC (DB1242SVC)

1110W Peak (370W RMS) 12" DB+ Series Single 4-ohm Car, UTV and Marine Subwoofer

• Peak Power: 1110 watts
• RMS Power: 370 watts
• Impedance: Single 4 ohm
• Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 4.34"
• Sensitivity: 86 dB

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

Was $149.99 Details
$100.00

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Polk Audio DB 842 SVC (DB842SVC)

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

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Polk Audio DB 842 SVC (DB842SVC)

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

• Peak Power: 750 watts
• RMS Power: 250 watts
• Impedance: Single 4 ohm
• Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 3.82"
• Sensitivity: 84 dB

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

Was $209.99 Details
$79.00

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Polk Audio MM842 DVC

900W Peak (300W RMS) 8" MM1 Series Dual 4-ohm Marine Subwoofer

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Polk Audio MM842 DVC

900W Peak (300W RMS) 8" MM1 Series Dual 4-ohm Marine Subwoofer

• Peak Power: 900 watts
• RMS Power: 300 watts
• Impedance: Dual 4 ohm
• Composite Polypropylene Cone - CPPC
• Santoprene Rubber surround
• Mount depth: 4"
• Sensitivity: 85 dB

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Was $209.99 Details
$119.00

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(2) Polk Audio MM 842 SVC (MM842SVC) + Dual Vented Box & Speaker Wire!

2 900W Peak (300W RMS) 8" MM1 Series SIngle 4-Ohm Car Subwoofer with Dual Vented Box & Speaker Wire

(2) MM842 SVC,BBSW127,8DQV big Out of stock
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(2) Polk Audio MM 842 SVC (MM842SVC) + Dual Vented Box & Speaker Wire!

2 900W Peak (300W RMS) 8" MM1 Series SIngle 4-Ohm Car Subwoofer with Dual Vented Box & Speaker Wire

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

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

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$412.98
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• 300 Watts RMS
• 900 Watts Max
• Composite Cone
• Santoprene surround
• Fiberglass-Reinforced ABS Basket
• IP56 Ultra Marine Certified
• Vented Pole and Basket Structure

Polk Audio MM842 SVC (MM842SVC)

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

MM842 SVC big
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Polk Audio MM842 SVC (MM842SVC)

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

• Peak Power: 900 watts
• RMS Power: 300 watts
• Impedance: Single 4 ohm
• Composite Polypropylene Cone - CPPC
• Santoprene Rubber surround
• Mount depth: 4"
• Sensitivity: 85 dB

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

2
Was $209.99 Details
$149.00

Available

Ships in 10-14 days

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(2) Polk Audio MM 842 DVC (MM842DVC) + Atrend 8DQV and Speaker Wire

(2) 900W Peak (300W RMS) 8" Dual 4-Ohm Subwoofer with Vented Box & Speaker Wire

(2) MM 842 DVC,BBSW127,8DQV big Out of stock
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(2) Polk Audio MM 842 DVC (MM842DVC) + Atrend 8DQV and Speaker Wire

(2) 900W Peak (300W RMS) 8" Dual 4-Ohm Subwoofer with Vented Box & Speaker Wire

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

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

55
Was $544.96 Details
$399.98
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

Polk Audio DB 1042 DVC (DB1042DVC)

1050W Peak (350W RMS) 10" DB+ Series Single 4-ohm Car, UTV and Marine Subwoofer

DB 1042 DVC big
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Polk Audio DB 1042 DVC (DB1042DVC)

1050W Peak (350W RMS) 10" DB+ Series Single 4-ohm Car, UTV and Marine Subwoofer

• Peak Power: 1050 watts
• RMS Power: 350 watts
• Impedance: Dual 4 ohm
• Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 4.34"
• Sensitivity: 85 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

2
Was $119.99 Details
$99.00

Available

Ships in 10-14 days

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Polk Audio DB 1242 DVC (DB1242DVC)

1110W Peak (370W RMS) 12" DB+ Series Dual 4-ohm Car, UTV and Marine Subwoofer

DB 1242 DVC big
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Polk Audio DB 1242 DVC (DB1242DVC)

1110W Peak (370W RMS) 12" DB+ Series Dual 4-ohm Car, UTV and Marine Subwoofer

• Peak Power: 1110 watts
• RMS Power: 375 watts
• Impedance: Dual 4 ohm
• Polypropylene cone
• Santoprene Rubber surround
• Mount depth: 4.34"
• Sensitivity: 86 dB

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

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Was $149.99 Details
$119.00

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Polk Audio MM1242 DVC

1260W Peak (420W RMS) 12" MM1 Series Dual 4-ohm Marine Subwoofer

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Polk Audio MM1242 DVC

1260W Peak (420W RMS) 12" MM1 Series Dual 4-ohm Marine Subwoofer

• Peak Power: 1260 watts
• RMS Power: 420 watts
• Impedance: Dual 4 ohm
• Composite Polypropylene Cone - CPPC
• Santoprene Rubber surround
• Mount depth: 4.64"
• Sensitivity: 87 dB

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

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Was $249.99 Details
$179.00

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Polk Audio MM1042 SVC

1200W Peak (400W RMS) 10" MM1 Series Single 4-ohm Marine Subwoofer

MM1042 SVC big
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Polk Audio MM1042 SVC

1200W Peak (400W RMS) 10" MM1 Series Single 4-ohm Marine Subwoofer

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Impedance: Single 4 ohm
• Composite Polypropylene Cone - CPPC
• Santoprene Rubber surround
• Mount depth: 4.6"
• Sensitivity: 86 dB

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

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Was $239.99 Details
$169.00

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Polk Audio MM1242 SVC

1260W Peak (420W RMS) 12" MM1 Series Single 4-ohm Marine Subwoofer

MM1242 SVC big
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Polk Audio MM1242 SVC

1260W Peak (420W RMS) 12" MM1 Series Single 4-ohm Marine Subwoofer

• Peak Power: 1260 watts
• RMS Power: 420 watts
• Impedance: Single 4 ohm
• Composite Polypropylene Cone - CPPC
• Santoprene Rubber surround
• Mount depth: 4.64"
• Sensitivity: 87 dB

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

Was $249.99 Details
$179.00

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Polk Audio MM1042 DVC

1200W Peak (400W RMS) 10" MM1 Series Dual 4-ohm Marine Subwoofer

MM1042 DVC big
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Polk Audio MM1042 DVC

1200W Peak (400W RMS) 10" MM1 Series Dual 4-ohm Marine Subwoofer

• Peak Power: 1200 watts
• RMS Power: 400 watts
• Impedance: Dual 4 ohm
• Composite Polypropylene Cone - CPPC
• Santoprene Rubber surround
• Mount depth: 4.6"
• Sensitivity: 86 dB

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

Was $239.99 Details
$169.00

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Ships in 10-14 days

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(2) Polk Audio MM 1242 SVC 12” 2520w Car/Marine Subwoofers+Vented Enclosure Box

(2) 1260W Peak (420W RMS) 12" MM1 Series Single 4-Ohm Car Subwoofers (MM 1242SVC) + Dual Vented Enclosure Package

(2) MM1242 SVC,BBSW167,12DQV big Out of stock
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(2) Polk Audio MM 1242 SVC 12” 2520w Car/Marine Subwoofers+Vented Enclosure Box

(2) 1260W Peak (420W RMS) 12" MM1 Series Single 4-Ohm Car Subwoofers (MM 1242SVC) + Dual Vented Enclosure Package

• 420 Watts RMS
• 1260 Watts Max
• Composite Cone
• Santoprene surround
• Fiberglass-Reinforced ABS Basket
• IP56 Ultra Marine Certified
• Vented Pole and Basket Structure

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

38
Was $644.92 Details
$397.96
Add to Cart

• 420 Watts RMS
• 1260 Watts Max
• Composite Cone
• Santoprene surround
• Fiberglass-Reinforced ABS Basket
• IP56 Ultra Marine Certified
• Vented Pole and Basket Structure

Polk Audio MM 1242 SVC 12” 1260w Car/Marine Subwoofer+Vented Sub Box Enclosure

1260W Peak (420W RMS) 12" MM1 Series Single 4-Ohm Car Subwoofer (MM 1242SVC) Package

BBSW167,SPL-12SV,MM1242 SVC big
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Polk Audio MM 1242 SVC 12” 1260w Car/Marine Subwoofer+Vented Sub Box Enclosure

1260W Peak (420W RMS) 12" MM1 Series Single 4-Ohm Car Subwoofer (MM 1242SVC) Package

• 420 Watts RMS
• 1260 Watts Max
• Composite Cone
• Santoprene surround
• Fiberglass-Reinforced ABS Basket
• IP56 Ultra Marine Certified
• Vented Pole and Basket Structure

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Universal Fitment Icon Universal-fit, works with nearly all vehicles.

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• 420 Watts RMS
• 1260 Watts Max
• Composite Cone
• Santoprene surround
• Fiberglass-Reinforced ABS Basket
• IP56 Ultra Marine Certified
• Vented Pole and Basket Structure

(2) Polk Audio DB1242SVC 12” 2220 Watt Car Subwoofers+Sealed Sub Box Enclosure

1110W Peak (370W RMS) 12" DB+ Series Single 4 ohm Car Subwoofer (DB 1242SVC) Package

(2) DB 1242 SVC,BBSW167,MDFD12 big
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(2) Polk Audio DB1242SVC 12” 2220 Watt Car Subwoofers+Sealed Sub Box Enclosure

1110W Peak (370W RMS) 12" DB+ Series Single 4 ohm Car Subwoofer (DB 1242SVC) Package

• 375 Watts RMS
• 1110 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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• 375 Watts RMS
• 1110 Watts Max
• Polypropylene Cone
• Santoprene Rubber Surround
• IP56 Marine Certified
• Tested for salt-fog, UV and humidity
• Quick-Connect Wire Terminals

(2) Polk Audio DB1242DVC 12” 2220 Watt Car Subwoofers+Vented Sub Box Enclosure

1110W Peak (370W RMS) 12" Series Dual 4-Ohm Car / Marine Subwoofer (DB 1242DVC) Package

(2) DB 1242 DVC,BBSW167,BBX212BK big DISCONTINUED
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(2) Polk Audio DB1242DVC 12” 2220 Watt Car Subwoofers+Vented Sub Box Enclosure

1110W Peak (370W RMS) 12" Series Dual 4-Ohm Car / Marine Subwoofer (DB 1242DVC) Package

• 375 Watts RMS
• 1110 Watts Max
• Polypropylene Cone
• Santoprene Rubber Surround
• IP56 Marine Certified
• Tested for salt-fog, UV and humidity
• Quick-Connect Wire Terminals

Universal Fitment Icon Universal-fit, works with nearly all vehicles.

56

• 375 Watts RMS
• 1110 Watts Max
• Polypropylene Cone
• Santoprene Rubber Surround
• IP56 Marine Certified
• Tested for salt-fog, UV and humidity
• Quick-Connect Wire Terminals

Polk Audio DB 842 DVC (DB842DVC) + Atrend Vented Box & FREE Speaker Wire!

750W Peak (250W RMS) 8" DB+ Series Dual 4 ohm Car Subwoofer (DB 842DVC) Complete Sub Package

BBSW127,8SQV,DB 842 DVC big
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Polk Audio DB 842 DVC (DB842DVC) + Atrend Vented Box & FREE Speaker Wire!

750W Peak (250W RMS) 8" DB+ Series Dual 4 ohm Car Subwoofer (DB 842DVC) Complete Sub Package

• 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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Was $294.93 Details
$163.94

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• 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

(2) Polk Audio DB 842 DVC (DB842DVC) + Atrend 8DQV Enclosure

(2) 750W Peak (250W RMS) 8" Subwoofer with Vented Subwoofer Enclosure

(2) DB 842 DVC,BBSW127,8DQV big
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(2) Polk Audio DB 842 DVC (DB842DVC) + Atrend 8DQV Enclosure

(2) 750W Peak (250W RMS) 8" Subwoofer with Vented Subwoofer Enclosure

• 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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• 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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    FAQ for Subwoofer and Sub Box Upgrades in 2007 Sierra Denali

    Q: Can I upgrade or change the Subwoofer and Sub Box Upgrades in 2007 GMC Sierra Denali?

    A: Yes this page includes all the best Subwoofer and Sub Box Upgrades that work in your Sierra Denali.

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