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Infinity Reference REF-375TX

Reference Series 3/4" textile dome tweeters

Item # 108R375TXM

Muddy soundstage across your dash? Looking to brighten up your system a bit?

Find what Fits your car

Muddy soundstage across your dash? Looking to brighten up your system a bit?

California customers:
Please click here for your Proposition 65 warning.

Top seller

Item # 108R375TXM

In stock
$99.95 pair

About the Infinity Reference REF-375TX

Smooth and clear

Muddy soundstage across your dash? Looking to brighten up your system a bit? Infinity's REF-375tx 3/4" dome tweeters will bring refreshingly warm detail to your music and provide an improved stereo image — without being shrill or causing harshness.

Smooth and clear

Muddy soundstage across your dash? Looking to brighten up your system a bit? Infinity's REF-375tx 3/4" dome tweeters will bring refreshingly warm detail to your music and provide an improved stereo image — without being shrill or causing harshness.

Bring on the 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.

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


Product highlights:

  • 3/4" textile dome tweeters (pair)
  • flush- and surface-mount hardware included
  • Starfish™ bracket for mounting in factory tweeter locations
  • passive in-line crossovers included (2,500 Hz)
  • handles up to 45 watts RMS (135 watts peak power)
  • frequency response: 2,500-21,000 Hz
  • sensitivity: 93 dB
  • top-mount depth: 13/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # REF375TXAM

What's in the box:

  • 2 Tweeters (each has attached 6" speaker leads)
  • 2 In-line crossovers (each has 24" 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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Crutchfield response

<< >>

More details on the Infinity Reference REF-375TX

Pat M.

Features & specs

Speaker Size 3/4
Design 1-way
Tweeter Design 3/4" Dome
Impedance (Ohms) 3
Tweeter Composition Textile
Woofer Composition an
Woofer Surround ---
Parts Warranty 1 Year
Labor Warranty 1 Year
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 13/16
Bottom-mount Depth (Inches) 0 15/16
Cutout Diameter or Length (inches) 1 5/8
Mounting Height (Inches) 0.65
The Infinity Reference REF-375TX replaces these items:

Product Research



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

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.


  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 0.854" 0.65" 0.0" 0.857" 0.386" 0.286"
Depth screw depth 0.786" 0.930" screw depth 0.471" 0.571"
Frame Diameter 1.474" 1.838" 3.036" 2.440" 2.330" 2.330"
Cutout Diameter N/A 1.581" N/A N/A 1.504" 1.257"


Crossover Connections: Each crossover has 24" 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: 2-3/4"
  • Width: 7/8"
  • Height: 7/8"

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Customer Q&A

5 questions already asked

Is it just one or a pair of them?
[ Harold  Apr 23, 2020 ]
4 answers
A pair. Excellent quality and great sound.
[ rafael  Apr 27, 2020 ]
[ Peter  Apr 24, 2020 ]
yes. Two to a package.
[ Thomas  Apr 23, 2020 ]
Hi there is a pair in the box . Very good sound !1
[ JOE  Apr 23, 2020 ]
What is the diameter of the tweeter without the adapters on it?
[ Anthony  Sep 15, 2019 ]
4 answers
They are 1.28" wide by our measurements. :)
[ Calvin  Sep 25, 2019 ]  Staff
I never actually measured the diameter. the specs say 3/4 inch, i put them in a 2005 pilot and they were smaller than stock.
[ THEODORE  Sep 25, 2019 ]
Hi Anthony I did not measure them I would say 1' to 11/4' . The sound is crystal clear and I am happy with them .goodluck Joe...
[ JOE  Sep 24, 2019 ]
Not sure as I returned them. They are very tiny, maybe an inch or so.
[ Ronald  Sep 24, 2019 ]
Installed in Ford Fusion with Sony 12 speaker system, I don't notice much of a difference from stock, mainly with volume. Should I have not used the included crossover?
[ Tabo  Sep 14, 2019 ]
1 answer
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Sep 23, 2019 ]  Staff
When adding Ref 375 tweeters (3 ohm) to an existing Infinity Kappa 90csw component system (2.5ohm) driven off an infinity K2 amp (min 2 ohm), how should I wire the 375's, in series with the existing tweeters, after the crossover or directly to the amp, in series with the existing system before the crossover?
[ DanDan  Mar 28, 2019 ]
1 answer
That's a great question Daniel. I would think you want to wire them after the crossover as you don't need them to see a full-range signal. If you purchased them from Crutchfield our Tech Support can walk you through the installation. You can reach them here:
[ Cosmo  Apr 14, 2019 ]  Staff

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