Infinity REF307F 3.5" Reference Series 2-way 3-ohm Car Speakers

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Product highlights

• 75 watts Peak Each, 25 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

Learn more about the ref307f_41dsc6934

Doesn't fit your 2015 Flex

Similar items | Update vehicle | Vehicle store

List price $299.90

-20%

$239.90

/pair with warranty

Starting at $22/mo

or 4 payments of $60

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Description

Authorized dealer

Infinity REF307F (INFSPKRF307FUS)

150W Peak (50W RMS) 3.5" Reference Series 2-Way Coaxial 3-ohm Speakers
Quantity: 1

Product Details:

3-1/2" Reference Series 2-way Coaxial Car Speakers
Power Handling:

Peak: 150 watts per pair / 75 watts each
RMS: 50 watts per pair / 25 watts each

Polypropylene cone material
Rubber speaker surround
1/2" Textile Edge Driven Dome Tweeters
+3dB tweeter boost switch function
3-ohm impedance combines with speaker wire for 4-ohm load
Features Plus One woofer cone architecture
Increased low-frequency output and accurate sound production
Optimized frame size featuring compact design
Top-mount Depth: 1-7/16"
Cutout Dimensions: 3"
Impedance: 3 ohm
Frequency Response: 85 - 21000 Hz
Sensitivity: 91 dB
Authorized Internet Dealer
MFR #: REF307F
1-year Manufacturer's Warranty

Priced Per Pair

Infinity REF697F (INFSPKRF697FUS)

600W Peak (200W RMS) 6x9" Reference Series 2-Way Coaxial 4-ohm Speakers
Quantity: 1

Product Details:

6" x 9" Reference Series 2-way Coaxial Car Speakers
Power Handling:

Peak: 600 watts per pair / 300 watts each
RMS: 200 watts per pair / 100 watts each

Polypropylene cone material
Rubber speaker surround
1" Textile Edge Driven Dome Tweeters
+3dB tweeter boost switch function
3-ohm impedance combines with speaker wire for 4-ohm load
Features Plus One woofer cone architecture
Increased low-frequency output and accurate sound production
Optimized frame size featuring compact design
Top-mount Depth: 3-1/8"
Cutout Dimensions: 8-1/2 x 5-3/4
Impedance: 3 ohm
Frequency Response: 46 - 20000 Hz
Sensitivity: 94 dB
Authorized Internet Dealer
MFR #: REF697F
1-year Manufacturer's Warranty

Priced Per Pair

Specifications & Details

Speaker Specifications

Series

Reference Series

Priced Per

Pair

Number of Speakers

Speaker Size

3-1/2"

Design

2-way Coaxial

Tweeter Design

Balanced Dome

Tweeter Size

1/2"

Tweeter Composition

Textile

Woofer Composition

Polypropylene

Woofer Surround

Rubber

Peak Power Handling

75 watts

RMS Power Handling

25 watts

Total PEAK Per Pair/Set

150 watts

Total RMS Per Pair/Set

50 watts

Sensitivity

91 dB

Frequency Response

85 - 21000 Hz

Impedance (Per Voice Coil)

3 ohm

Shallow Mount Installation

Top-Mount Depth (Mounting Depth)

1-7/16"

Cutout Dimensions

General specifications

Hi-Res Certified

Color

Black

Illumination

None

Speaker Grilles

Includes Damping Kit

without Damping Kit

What is in the box?

Paperwork

User manual

WITB: Speakers

Foam Gasket
Speakers (2)

Warranty and Return Policy

Parts Warranty Duration

1 year

Labor Warranty Duration

1 year

Warranty Provider

Manufacturer

Customer Ratings & Reviews

Infinity REF307F + REF697F thumbnail image

Overall rating distribution

5 star		100%
4 star		0%
3 star		0%
2 star		0%
1 star		0%

Filter by Star Rating

Show only Verified Purchases

By feature average rating

Durability		4.6
Value		4.8
Features		4.8
Design		4.8
Usability		4.8

Customer Photos & Videos

Customer Reviews

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Perfect fit

The following review is for REF307F, which is a part of the bundle you are viewing.

I couldn’t hear my stock 3.5 speaker at all so I upgraded to the infinity and the sound is so pure and clear

By Jose on June 28, 2024 Checkmark Icon

Verified purchase

2022 Toyota Tundra

10 found this helpful

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Clean and loud!

The following review is for REF697F, which is a part of the bundle you are viewing.

Very easy install, these are a big upgrade from my factory 6x9s.

By Luke on March 7, 2026 Checkmark Icon

Verified purchase

2021 Ford F-150

1 found this helpful

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Sounds amazing

The following review is for REF307F, which is a part of the bundle you are viewing.

I had a faulty stock speaker in my Mustang Mach E and this replacement is just what the Dr ordered. Perfect fit and super easy install.

By J on April 30, 2025 Checkmark Icon

Verified purchase

2022 Ford Mustang Mach-E

1 found this helpful

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The following review is for REF307F, which is a part of the bundle you are viewing.

Sound way clearer and better then the stock ones that were in my truck. Could see a big difference in weight too, and how much bigger the magnet was from the stock ones ????????

By Jonathan on January 31, 2025 Checkmark Icon

Verified purchase

2009 Dodge Ram 1500

1 found this helpful

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The following review is for REF697F, which is a part of the bundle you are viewing.

By jeff on November 23, 2024 Checkmark Icon

Verified purchase

2013 Harley Davidson FLHX Street Glide

1 found this helpful

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The following review is for REF307F, which is a part of the bundle you are viewing.

By kys on December 9, 2025 Checkmark Icon

Verified purchase

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Sound Great

The following review is for REF697F, which is a part of the bundle you are viewing.

Did not line up exactly with factory screw holes.

By Mark on May 4, 2025 Checkmark Icon

Verified purchase

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2006 Dodge Ram 3500 5.9L MEGA CAB

The following review is for REF697F, which is a part of the bundle you are viewing.

These speaker are a very good fit for the front doors. I no problems installing them and the pigtails made it easier yet. They also have a good sound. Especially compared to the stock ones that buzzed.

By JAMES on March 26, 2025 Checkmark Icon

Verified purchase

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The following review is for REF697F, which is a part of the bundle you are viewing.

By Patrick on March 11, 2025 Checkmark Icon

Verified purchase

2017 Chevrolet Colorado

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