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Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
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.
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".
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.
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.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
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.
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Diamond Audio DMDX69C

390W Peak (130W RMS) 6x9" DMD Series 2-Way Component 4-ohm Speakers

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Diamond Audio DMDX69C

390W Peak (130W RMS) 6x9" DMD Series 2-Way Component 4-ohm Speakers

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Dome Tweeters
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Install kits available for most vehicles

$279.99 /set

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Diamond Audio DMD65C

200W Peak (100W RMS) 6.5" DMD Series 2-way Component Speaker System

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Diamond Audio DMD65C

200W Peak (100W RMS) 6.5" DMD Series 2-way Component Speaker System

• 100 watts Peak Each, 50 watts RMS Each
• 0.79" Silk Dome tweeters with ferrofluid cooling
• Reinforced Polypropylene cone material with internal dampening
• Sensitivity: 87 dB

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Diamond Audio DMD653

200W Peak (100W RMS) 6.5" DMD Series 3-way Coaxial Car Speakers

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Diamond Audio DMD653

200W Peak (100W RMS) 6.5" DMD Series 3-way Coaxial Car Speakers

• 100 watts Peak Each, 50 watts RMS Each
• 0.79" Silk Dome tweeters
• Polypropylene cone material with reinforced stamped pattern
• Impedance: 4 ohm
• Sensitivity: 87 dB

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List price $149.99
-5% $142.99 /pair

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Diamond Audio DMD52

160W Peak 5.25" DMD Series 2-way Coaxial Car Speakers

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Diamond Audio DMD52

160W Peak 5.25" DMD Series 2-way Coaxial Car Speakers

• 80 watts Peak Each
• 0.79" Silk Dome Tweeters
• Polypropylene cone material
• Sensitivity: 86 dB

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Diamond Audio DES525

200W Peak (100W RMS) 5.25" Elite Series 2-way 4-ohm Coaxial Car Speakers

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Diamond Audio DES525

200W Peak (100W RMS) 5.25" Elite Series 2-way 4-ohm Coaxial Car Speakers

• 100 watts Peak Each, 50 watts RMS Each
• 0.98" Aluminum Dome tweeters
• Composite Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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Diamond Audio DES65C

240W Peak (120W RMS) 6.5" DES Series 2-way Component Speaker System

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Diamond Audio DES65C

240W Peak (120W RMS) 6.5" DES Series 2-way Component Speaker System

• 120 watts Peak Each, 60 watts RMS Each
• 1" Aluminum Dome tweeters
• Composite Foam Core Carbon Fiber cone material
• Sensitivity: 87 dB

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$359.99 /set

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Diamond Audio DES365C

280W Peak (140W RMS) 6.5" Diamond Elite Series 3-Way 4-ohm Component Speaker System

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Diamond Audio DES365C

280W Peak (140W RMS) 6.5" Diamond Elite Series 3-Way 4-ohm Component Speaker System

• 140 watts Peak Each, 70 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite foam core carbon fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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$549.99 /set

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Diamond Audio MS69CX

1000W Peak (250W RMS) 6x9" Motorsport Series 2-Way Coaxial 4-ohm Marine Speakers

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Diamond Audio MS69CX

1000W Peak (250W RMS) 6x9" Motorsport Series 2-Way Coaxial 4-ohm Marine Speakers

• 500 watts Peak Each, 125 watts RMS Each
• 1" Titanium Dome Tweeters
• UV-treated thermal molded waterproof kevlar cone material
• Impedance: 4 ohm
• Sensitivity: 87.4 dB

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-21% $329.99 /pair

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• 500 watts Peak Each, 125 watts RMS Each
• 1" Titanium Dome Tweeters
• UV-treated thermal molded waterproof kevlar cone material
• Impedance: 4 ohm
• Sensitivity: 87.4 dB

Diamond Audio DMD42

120W Peak (60W RMS) 4" DMD Series 2 Way Coaxial 4-ohm Speakers

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Diamond Audio DMD42

120W Peak (60W RMS) 4" DMD Series 2 Way Coaxial 4-ohm Speakers

• 60 watts Peak Each, 30 watts RMS Each
• 3/4" Silk Dome Tweeters
• Reinforced Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB

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Install kits available for most vehicles

List price $119.99
-8% $109.99 /pair

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Diamond Audio DMD683

160W Peak (80W RMS) 6x8" DMD Series 3-way Coaxial Car Speakers

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Diamond Audio DMD683

160W Peak (80W RMS) 6x8" DMD Series 3-way Coaxial Car Speakers

• 80 watts Peak Each, 40 watts RMS Each
• 0.79" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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Install kits available for most vehicles

List price $169.99
$164.99 /pair

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Diamond Audio DMDX65C

270W Peak (90W RMS) 6.5" DMD Series 2-Way Component 4-ohm Speakers

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Diamond Audio DMDX65C

270W Peak (90W RMS) 6.5" DMD Series 2-Way Component 4-ohm Speakers

• 135 watts Peak Each, 45 watts RMS Each
• 3/4" Dome Tweeters
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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Diamond Audio DMDX46

150W Peak (50W RMS) 4x6" DMDX Series 2 Way Coaxial 4-ohm Speakers

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Diamond Audio DMDX46

150W Peak (50W RMS) 4x6" DMDX Series 2 Way Coaxial 4-ohm Speakers

• 75 watts Peak Each, 25 watts RMS Each
• Impedance: 4 ohm

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Install kits available for most vehicles

$109.99 /pair

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Diamond Audio H600A

340W Peak (170W RMS) 6" HEX Series 2-Way 4-ohm Component Speaker System

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Diamond Audio H600A

340W Peak (170W RMS) 6" HEX Series 2-Way 4-ohm Component Speaker System

• 170 watts Peak Each, 85 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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$749.99 /set

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Diamond Audio H65SH

300W Peak (150W RMS) 6.5" HEX Series 4-ohm 2-Way Shallow Component Speaker System

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Diamond Audio H65SH

300W Peak (150W RMS) 6.5" HEX Series 4-ohm 2-Way Shallow Component Speaker System

• 150 watts Peak Each, 75 watts RMS Each
• 2" Silk Dome Tweeters
• Reinforced Glass Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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Diamond Audio H65A

300W Peak (150W RMS) 6.5" HEX Series 2-Way 4-ohm Component Speaker System

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Diamond Audio H65A

300W Peak (150W RMS) 6.5" HEX Series 2-Way 4-ohm Component Speaker System

• 150 watts Peak Each, 75 watts RMS Each
• 1" Aluminum Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

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Diamond Audio H65S

300W Peak (150W RMS) 6.5" HEX Series 2-Way 4-ohm Component Speaker System

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Diamond Audio H65S

300W Peak (150W RMS) 6.5" HEX Series 2-Way 4-ohm Component Speaker System

• 150 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Anodized Aluminum cone material
• Impedance: 4 ohm
• Sensitivity: 88.3 dB

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Diamond Audio DES682

200W Peak (100W RMS) 6x8" DES Series 2-way Coaxial Car Speakers

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Diamond Audio DES682

200W Peak (100W RMS) 6x8" DES Series 2-way Coaxial Car Speakers

• 100 watts Peak Each, 50 watts RMS Each
• 1" Aluminum Dome tweeters with ferrofluid cooling
• Composite Foam Core Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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Install kits available for most vehicles

$199.99 /pair

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Diamond Audio H600S

340W Peak (170W RMS) 6.75" HEX Series 2-Way Component 4-ohm Speakers

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Diamond Audio H600S

340W Peak (170W RMS) 6.75" HEX Series 2-Way Component 4-ohm Speakers

• 170 watts Peak Each, 85 watts RMS Each
• 1" Silk Dome Tweeters
• Kevlar Composite hexagonal cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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Diamond Audio DMDX6925C

390W Peak (130W RMS) 6x9" DMD Series 3-Way Component 4-ohm Speakers

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Diamond Audio DMDX6925C

390W Peak (130W RMS) 6x9" DMD Series 3-Way Component 4-ohm Speakers

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Dome Tweeters
• 2.5" Speakers included
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Install kits available for most vehicles

$429.99 /set

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Diamond Audio HX653DI

300W RMS 6.5" HEX Diamante Italia Series 3-Way 3.3-ohm Component Speaker System

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Diamond Audio HX653DI

300W RMS 6.5" HEX Diamante Italia Series 3-Way 3.3-ohm Component Speaker System

• 150 watts RMS Each
• 1" Silk Dome Tweeters
• Bronze Fiberglass cone material
• Impedance: 3.3 ohm
• Sensitivity: 90 dB

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$1,319.99 /set

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