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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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Infinity REF607CF (INFSPKRF607CFUS) (Open Box, Great)

540W Peak (180W RMS) 6.5" Reference Series 2 Way 3-ohm Component Speaker System

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Infinity REF607CF (INFSPKRF607CFUS) (Open Box, Great)

540W Peak (180W RMS) 6.5" Reference Series 2 Way 3-ohm Component Speaker System

• 270 watts Peak Each, 90 watts RMS Each
• 3/4" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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Save $21 on install kits for this speaker

3
List price $249.95
-25% $186.96 /set

In stock.

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Infinity REF687F (INFSPKRF687FUS)

360W Peak (120W RMS) 6x8" Reference Series 2-Way Coaxial 3-ohm Speakers

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Infinity REF687F (INFSPKRF687FUS)

360W Peak (120W RMS) 6x8" Reference Series 2-Way Coaxial 3-ohm Speakers

• 180 watts Peak Each, 60 watts RMS Each
• 1" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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Install kits available for most vehicles

1
List price $159.95
-19% $129.95 /pair

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Only 1 Left!

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Infinity REF-6532ex (REF6532EXAM) with REF697F (INFSPKRF697FUS)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Peak (200W RMS) 6x9" 2-way 4-ohm Coaxial Car Speakers

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Infinity REF-6532ex (REF6532EXAM) with REF697F (INFSPKRF697FUS)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Peak (200W RMS) 6x9" 2-way 4-ohm Coaxial Car Speakers

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Save $21 on install kits for this speaker

11
List price $299.95
-27% $219.94 /pair

In stock.

Add to Cart

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity REF-6532ex + 9633IX (REF9633IXAM)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Peak (200W RMS) 6x9" 3-way 3-ohm Coaxial Car Speakers

REF6532EXAM_REF9633IXAM big
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Infinity REF-6532ex + 9633IX (REF9633IXAM)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Peak (200W RMS) 6x9" 3-way 3-ohm Coaxial Car Speakers

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for this speaker

7
List price $329.95
-42% $189.94 /pair

Available

Ships in 10-14 days

Add to Cart

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity REF-6532ex (REF6532EXAM) + REF-9632ix

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Max (200W RMS) 6x9" 2-Way Coaxial Car Speakers

REF6532EXAM_REF9632IXAM big
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Infinity REF-6532ex (REF6532EXAM) + REF-9632ix

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit + 600W Max (200W RMS) 6x9" 2-Way Coaxial Car Speakers

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Save $21 on install kits for this speaker

8
List price $299.95
-27% $219.94 /pair

Available

Ships in 10-14 days

Add to Cart

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

Infinity REF-6532ex (REF6532EXAM) with REF-6532ex (REF6532EXAM)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit Coaxial Car Speakers + 600W (200W RMS) 6x9" Reference Series 3-way 4-ohm

REF6532EXAM_REF697MF big
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Infinity REF-6532ex (REF6532EXAM) with REF-6532ex (REF6532EXAM)

330W Max (110W RMS) 6.5" Reference Series 2-way 3-ohm EZ Fit Coaxial Car Speakers + 600W (200W RMS) 6x9" Reference Series 3-way 4-ohm

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Save $21 on install kits for this speaker

8
List price $329.95
-24% $249.94 /pair

In stock.

Add to Cart

• 165 watts Peak Each, 55 watts RMS Each
• Textile Edge-driven Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 3 ohm
• Sensitivity: 93 dB

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