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Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
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.
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".
Flush Mount
If the speaker or tweeter is flush mountable, then it can be installed flush to the mounting surface.

When installing a flush mount tweeter, make sure that there is enough room behind the mounting surface for the tweeter and magnet. Check the mounting depth with your specific vehicle.
Surface Mount
If the speaker or tweeter is surface mountable, then it can be installed to be raised above the mounting area.

When installing a surface mountable tweeters, make sure that there are no obstructions that will prevent the tweeter from being installed correctly.
Angled Mount
If the speaker or tweeter is able to be angle mounted, then the installed tweeter can be positioned at an angle. An angle mounted tweeter can improve the audible sound quality of your system.

When installing a angle mountable tweeters, make sure that there are no obstructions that will prevent the tweeter from being installed correctly.
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.
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Infinity REF757T (INFSPKRF757TUS)

270W Peak (90W RMS) 3/4" Reference Series 3-ohm Dome Tweeters

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Infinity REF757T (INFSPKRF757TUS)

270W Peak (90W RMS) 3/4" Reference Series 3-ohm Dome Tweeters

• 3/4" Reference Series Edge Driven Dome Tweeters
• 135 watts Peak Each
• 45 watts RMS Each
• 3 ohm Impedance

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Install kits available for most vehicles

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List price $139.95
-21% $109.95 /pair

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Infinity REF-375TX

270W Peak (90W RMS) 0.75" Reference Series Car Tweeters

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Infinity REF-375TX

270W Peak (90W RMS) 0.75" Reference Series Car Tweeters

• 3/4" Reference Series Car Tweeters
• Edge-Driven Textile Tweeter
• 270W Max
• 90W RMS
• 3 ohm Impedance

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List price $130.00
-23% $99.95 /pair

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Infinity REF-375TX (Like New (Open Box))

270W Max (90W RMS) 3/4" Reference Series Car Tweeters

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Infinity REF-375TX (Like New (Open Box))

270W Max (90W RMS) 3/4" Reference Series Car Tweeters

• 3/4" Reference Series Car Tweeters
• Edge-Driven Textile Tweeter
• 270W Max
• 90W RMS
• 3 ohm Impedance

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Install kits available for most vehicles

List price $130.00
-35% $84.96 /pair

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Infinity Primus 753T (PR753T)

240W Peak (80W RMS) 3/4” Primus Series 3-ohm Edge-Driven Silk Dome Tweeters

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Infinity Primus 753T (PR753T)

240W Peak (80W RMS) 3/4” Primus Series 3-ohm Edge-Driven Silk Dome Tweeters

• 3/4" Primus Series Edge Driven Dome Tweeters
• 120 watts Peak Each
• 40 watts RMS Each
• 3 ohm Impedance

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Install kits available for most vehicles

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List price $99.95
-30% $69.95 /pair

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• 3/4" Primus Series Edge Driven Dome Tweeters
• 120 watts Peak Each
• 40 watts RMS Each
• 3 ohm Impedance

 
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