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Infinity Reference REF-375tx

3/4" textile dome tweeters

Item # 108R375TX

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?

Item # 108R375TX

Out of stock
C$159.99 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 # REF375TX

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

Crutchfield asked: Why did you buy this?
Idk [ Leonardo  Jan 07, 2019 ]
I chose Infinity these speakers for there sound quality and reputation... [ Richard  Dec 26, 2018 ]
matches other speakers [ AL  Dec 18, 2018 ]
Sensitivity, for use without amp or subwoofer. [ Candy  Dec 15, 2018 ]
Recommended to me to help possibly remove the hissing sound that comes from the component speaker set. I was told these are higher quality than the Primus tweeters. [ Kellen  Dec 04, 2018 ]
To match Infinity speaker upgrade for my 2017 F-150 XL [ Jon  Nov 26, 2018 ]
Infinity speakers are the best. [ Jim  Nov 26, 2018 ]
50% off!!! [ Dennis  Nov 25, 2018 ]
recommended by customer service rep . . . said it would work well and improve the overall experience with existing factory in dash stereo unit [ Edward  Nov 24, 2018 ]
Needed to replace stock tweeters after adding an Alpine power pack. This should do the trick because the RMS rating matches the amplifiers power output. [ Jason  Nov 23, 2018 ]
Price, and ratings [ Spike0358  Nov 20, 2018 ]
Picked these for fitment and brand i know [ Ryan  Nov 06, 2018 ]
There is a few choices I go to as far as speakers are concerned. Infinity, JBL, Polk. As my vehicles go last 3 have been all Infinity. Right now I'm swapping out my brand new Ford F 150 with 7 infinity speakers. $54,000 vehicle comes with $5 speakers. Thinking of boxing them up and shipping them to Ford. [ Jim  Oct 21, 2018 ]
Wanted to up grade. [ Timothy  Oct 14, 2018 ]
Fits with minimal hassle and quality of sound [ BRIAN  Oct 02, 2018 ]
These work great in our Chevy Cruze [ S  Sep 25, 2018 ]
Used for 2016 Ram 1500 roof speakers with alpine factory system. [ Christopher  Sep 11, 2018 ]
Rusty had given me some advice on how to make my sound clearer. I love music and just want it to sound like it should! [ G  Aug 29, 2018 ]
Infinity soft dome with smooth highs and not shrill like other materials...PEI, aluminum, titanium, mylar etc. Most realistic sounding material for speaker tweeters...and Infinity quality is as good as the sound reproduction they produce! [ FRANCIS E  Jun 22, 2018 ]
Infinity reference series has always had a pretty decent reputation for quality and the silk dome tweeters are exactly what I was looking for smooth response without trill or harsh highs. I have also paired these speakers with some 3 1/2 inch infinity reference speakers for continuity. [ Toron  Jun 07, 2018 ]

2 questions already asked

Will new tweeters be able to wire into existing Polk audio crossover? My polk tweeter blew on the drivers side and now I was wondering if I can hook it up to the old crossover ? Polk db5601 component speakers
[ Cody  Feb 19, 2019 ]
2 answers
Hi Cody, If you are asking specifically about the wiring aspect, you should have no problem hooking up the replacement tweeter to the existing Polk crossover.The email I am looking at here shows the tweeter you are replacing it with are the Infinity REF-375tx's. If that is the case, the folks at Crutchfield can tell you if there are any inconsistencies with the specs between Infinity and Polk. If it were me I would invest in a new component setup for the front. Hope that helps. Ken
[ Ken  Feb 19, 2019 ]
Yes it will -worked in my exterra
[ Scott  Feb 19, 2019 ]
I have Infiniti Reference 6x8's. Do I tap into those speaker wires for these tweeters? If so will the existing tweeters in the 6x8's still work?
[ Johns  Nov 12, 2018 ]
3 answers
Hi John, I purchased the Infinity 375 tx (6x8) speakers for my 2 front doors (existing Tweeters mounted on dash). The speakers come with an in-line passive crossover, so it plugs right up. All I had to do was replace them for my existing factory speakers. I did add the foam door bafflers as well as Dynamat sound insulation to my install. It sure made a big difference! Hope this helps! Ken
[ Ken  Nov 12, 2018 ]
I have no idea what vehicle you are adding these to. I got a message to answer this from Crutchfield. I can only speak to my vehicle, '17 F150. With that, I tapped into the door speaker wires as those also supply power to the tweeters. This is the OEM setup.
[ Michael  Nov 12, 2018 ]
In theory it should, I didn't mess with them, put them up on a shelf and forgot about them, until more now...
[ Damond  Nov 12, 2018 ]

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