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Infinity Reference REF-275tx 3/4" textile dome tweeters

Item # 108R275TX

Infinity designed their REF-275tx tweeters to play all the high-frequency details in your music — just the...

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Infinity designed their REF-275tx tweeters to play all the high-frequency details in your music — just the...

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Item # 108R275TX

About the Infinity Reference REF-275tx

Alexander H.

Detailed highs

Infinity designed their REF-275tx tweeters to play all the high-frequency details in your music — just the thing to clean up a muddy soundstage in your car or if you're just looking to brighten up your system a bit. These Reference X Series 3/4" textile domes add warm detail and provide an improved stereo image — without being shrill or causing harshness.

Detailed highs

Infinity designed their REF-275tx tweeters to play all the high-frequency details in your music — just the thing to clean up a muddy soundstage in your car or if you're just looking to brighten up your system a bit. These Reference X Series 3/4" textile domes add warm detail and provide an improved stereo image — without being shrill or causing harshness.

Give 'em plenty of power

Infinity uses an edge-driven tweeter design and a large voice coil to help this tweeter handle up to 45 watts RMS. The package includes in-line crossovers that protect the tweeters against lower frequencies, along with adapters that allow for surface- or flush-mounting, so that installation's a lot easier. You can use the included Starfish mounts to place the tweeters in many existing tweeter openings.

Note: These tweeters must be used with the supplied in-line high-pass crossovers, or an appropriate external crossover. Failure to do so could lead to damage to the tweeters not covered under the warranty.

Installation note: You may need a pair of our universal backstraps to install these tweeters in the factory locations.

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Product highlights:

  • 3/4" textile dome tweeters (pair)
  • flush- and surface-mount hardware included
  • Starfish™ bracket for mounting in factory tweeter locations
  • 2,500 Hz passive in-line crossovers included
  • handles up to 45 watts RMS (135 watts peak power)
  • frequency response: 2,500-21,000 Hz
  • sensitivity: 93 dB
  • top-mount depth: 7/8"
  • warranty: 1 year
  • MFR # REF-275tx

What's in the box:

  • 2 Tweeters (each has attached 6" speaker leads)
  • 2 In-line crossovers (each has 23" input leads and 33" output leads)
  • 2 Flush-mount housings
  • 2 Threaded flush-mount adapters
  • 2 Plastic locking nuts
  • 2 Surface-mount housings
  • 2 Starfish mounts
  • Six 5/8" Flat head screws
  • 2 Washers
  • 2 Nuts
  • 2 Infinity logos
  • Instruction manual
  • Template on box

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More details on the Infinity Reference REF-275tx

Pat M.

Features & specs

General
Speaker Size
Design 1-way
Tweeter Design 3/4" Edge-Driven Dome
Impedance (Ohms) 3
Tweeter Composition Textile
Woofer Composition ---
Woofer Surround ---
Parts Warranty 1 Year
Labor Warranty 1 Year
Specifications
Sensitivity (1W at 1 meter) N/A
Sensitivity at 2.83 volts 93
Frequency Response 2500 - 21k Hz
Minimum RMS Wattage ---
Maximum RMS Wattage 45
Peak Power Handling (Watts) 135
Top-mount Depth (Inches) 0 7/8
Bottom-mount Depth (Inches) 0 15/16
Cutout Diameter or Length (inches) 1 5/8
Mounting Height (Inches) 0.654
Frame Width 1.84
Frame Length 1.84
The Infinity Reference REF-275tx replaces these items:

Product Research

Features

Tweeter Material: Each tweeter features a 3/4" edge-driven textile dome for smooth, accurate highs.

Tweeter Mounting: The I-Mount tweeter mounting system and Starfish mounting brackets give you several different ways to mount the tweeters:

  • I-Mount: The tweeters can be surface- or flush-mounted with Infinity's innovative I-Mount system:
    • Surface Mount: Surface mounting the tweeters involves screwing the surface-mount cup to the mounting location, then inserting and locking the tweeter into the cup.
    • Flush Mount: Flush mounting is made easy through the use of the threaded flush-mount housing and plastic locking nut. Once a cutout is made, the tweeter is installed in the flush-mount adapter, then into the flush mount housing and inserted into the hole. The large plastic locking nut is threaded onto the adapter (from behind the mounting surface) to hold the complete assembly securely in place. When flush mounted, the tweeters may be angled for optimum response and imaging.
  • Starfish Mounting Brackets: The Starfish mounting brackets allow the tweeters to be installed in factory locations behind the grilles:
    • Bottom Mount: Once the Starfish bracket is trimmed, it is secured to the underside of the grille panel. The tweeter must be inserted into the bracket and locked into place before the bracket is mounted.
    • Surface Mount: Once the Starfish bracket is trimmed, it is screwed to the top of the mounting surface behind the grille panel. Then, the tweeter is inserted into the bracket and locked into place.
    • Flush Mount: There are two sets of tabs to flush mount the tweeter in the Starfish bracket, yielding different mounting dimensions. The upper tabs mount the tweeter completely below the opening and are glued in place. The lower mounting tabs are screwed in place and result in a mounting height just under a half inch. Once the bracket is mounted, the tweeter is inserted into the bracket and locked into place.

Tweeter Mounting Dimensions:

  I-Mount Surface Mount I-Mount Flush Mount Starfish Bottom Mount Starfish Surface Mount Starfish Flush Mount Starfish Flush Mount (below mounting surface)
Mounting Height 0.862" 0.654" 0.0" 0.857" 0.386" 0.286"
Depth screw depth 0.820" 0.930" screw depth 0.471" 0.571"
Frame Diameter 1.478" 1.840" 3.036" 2.440" 2.330" 2.330"
Cutout Diameter N/A 1.580" N/A N/A 1.504" 1.257"

Crossover Connections: Each crossover has 23" input leads and 33" output leads. The output leads are terminated with female quick-slides (that mate to the male quick-slides on the wire attached to the tweeters) and the input leads have bare wire.

Crossover Dimensions:

  • Length: 2.55"
  • Width: 0.885"
  • Height: 0.865"

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Customer Q&A

3 questions already asked

Q
Is there a trick to getting the speaker to fit flush down into any of the mounts provided? I don't want to push to hard and smash the dome, but with any of the mounts, it leaves about a 1/4 inch o silver still showing
scott  Jul 16, 2017
1 answer
A
We typically recommend using a set of Universal Backstraps to help mount aftermarket tweeters into factory locations: https://www.crutchfield.com/p_120BKSTRAP/Universal-Back-Strap.html For more details on installation in your specific vehicle, please feel free to contact an Advisor directly by phone (888.955.6000) or online chat. Thanks!
david  Jul 22, 2017 (Staff)
Q
Will the starfish mounts work with the 17 F150 stock tweeter mounting holes? I'd like to avoid straps or hot glue if possible
patrick  Jul 08, 2017
1 answer
A
For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
kenneth  Jul 08, 2017 (Staff)
Q
What size outer diameter is the swivel base mount? These are going on a motorcycle and judging by the picture it appears that it will be a perfect size and allow just enough angle of the tweeter.
keith  Jun 09, 2017
1 answer
A
Thanks for your question. The tweeters come with two different mounts, so the frame diameter varies from 1.478" to 3.036". Check out the product page "Details" tab and near the bottom you will see a whole chart and info on measurements and mounting. Hope this helps.
kenneth  Jun 09, 2017 (Staff)

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