---
product_id: 617502769
title: "Infinity REF307F Reference Series 3.5\" Extreme-Performance Automotive coaxial Speakers"
brand: "infinity"
price: "SAR 644"
currency: SAR
in_stock: true
reviews_count: 5
category: "Infinity"
url: https://www.desertcart.com.sa/products/617502769-infinity-ref307f-reference-series-3-5-extreme-performance-automotive-coaxial
store_origin: SA
region: Saudi Arabia
---

# 21 kHz frequency response 50W max output power Plus One™ oversized woofer cone Infinity REF307F Reference Series 3.5" Extreme-Performance Automotive coaxial Speakers

**Brand:** infinity
**Price:** SAR 644
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your drive with sound that’s as bold as your lifestyle.

## Quick Answers

- **What is this?** Infinity REF307F Reference Series 3.5" Extreme-Performance Automotive coaxial Speakers by infinity
- **How much does it cost?** SAR 644 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/617502769-infinity-ref307f-reference-series-3-5-extreme-performance-automotive-coaxial)

## Best For

- infinity enthusiasts

## Why This Product

- Trusted infinity brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Performance:** Backed by Infinity’s legacy and a 4.6-star rating from discerning audiophiles.
- • **Audiophile-Grade Clarity:** Edge-driven textile tweeters deliver smooth, non-fatiguing highs even at max volume.
- • **Customizable Sound Profile:** Adjustable tweeter output lets you tailor high frequencies to your ride or mood.
- • **Seamless Fit, Sleek Design:** Compact, flush-mount baskets engineered to fit nearly any vehicle effortlessly.
- • **Bass That Commands Attention:** Patented Plus One™ cones provide more cone area for deeper, punchier bass.

## Overview

The Infinity REF307F Reference Series 3.5" coaxial speakers combine audiophile-grade tweeters with patented Plus One™ oversized woofers to deliver crisp highs and powerful bass. Designed for easy flush-mount installation in most vehicles, these 50W speakers offer adjustable tweeter output for personalized sound optimization, making them the perfect upgrade for car audio enthusiasts seeking premium performance and clarity.

## Description

New Reference speakers are designed to deliver Infinity’s signature sound in more vehicles. They feature edge-driven textile tweeters for smooth, clear highs and the larger models offer an adjustable tweeter output level control for high-frequency optimization based on installation location or the listener's preference. Oversized Plus One™ woofers offer more surface area for higher bass output and enhanced midrange performance. Plus our newly engineered baskets are optimized to fit most factory speaker locations. Available in a range of standard sizes - 3-1/2", 4", 5-1/4", 6-1/2", 6" x 8" and 4" x 6" coaxial, 6" x 9" 3-way, and 5-1/4", 6-1/2", and 6" x 9" component - they’re the perfect upgrade from factory speakers.

Review: I love Infinity. Perfect. - Infinity makes amazing car audio products, I’ve been using them for more than 20 years. You can never go wrong with any of their products. The design is clean and unobtrusive, they will match well with any vehicle trim. The sound is crisp and clear, perfect audio quality for high frequencies. For the quality these are far cheaper than their competitors.
Review: Old, Worn, and Not the 307f I Expected！ - Received as a replacement but it’s clearly old and worn. Not the 307f I expected, and completely useless for my setup. Total disappointment.

## Features

- The audiophile-grade tweeters used in Infinity's new Reference speakers deliver smooth, non-fatiguing sound even at high output levels.
- The larger Reference multielement and component systems offer a tweeter output level control to optimize system linearity to suit installation location or the listener's preference.
- Harman’s patented (US patent #7,548,631) Plus One cones provide more overall speaker-cone area than other cones in its class - the result is higher sensitivity, increased low-frequency output and accurate music reproduction.
- Reference speakers are available in a range of standard sizes, and feature a compact design that allows them to fit just about any vehicle on the road today.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CV4HFR9Z |
| Additional Features | Lightweight |
| Age Range Description | Adult |
| Antenna Location | For Surround Sound Systems |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Audio output mode | Stereo |
| Best Sellers Rank | #80,710 in Electronics ( See Top 100 in Electronics ) #249 in Coaxial Car Speakers |
| Brand | Infinity |
| Built-In Media | REF307F |
| Color | black |
| Compatible Devices | Desktop, Laptop, MP3 Player, Projector, Smartphone, Tablet, Television |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | Coaxial |
| Connectivity Technology | Coaxial |
| Connectivity technology | Coaxial |
| Control Method | Touch |
| Controller Type | Touch Control |
| Customer Package Type | FFP |
| Customer Reviews | 4.6 out of 5 stars 99 Reviews |
| Enclosure Material | Plastic |
| Frequency Response | 21 KHz |
| Frequency response | 21 KHz |
| Is Waterproof | False |
| Item Dimensions D x W x H | 21.5D x 7.5W x 13.6H centimeters |
| Item Weight | 1.8 Pounds |
| MP3 player | No |
| Manufacturer | Infinity |
| Model Name | REF307F |
| Model Number | REF307F |
| Mounting Type | Flush Mount |
| Mounting type | Flush Mount |
| Number of Audio Channels | 2.0 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Speaker Maximum Output Power | 50 Watts |
| Speaker Size | 3.5 Inches |
| Speaker Type | Coaxial |
| Speaker maximum output power | 50 Watts |
| Specific Uses For Product | Car audio systems and home surround sound systems |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 3.5 Inches |
| Tweeter Diameter | 3.5 Inches |
| UPC | 050667379957 |
| Unit Count | 1 Count |
| Warranty Type | Limited |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 3.5 Inches |

## Product Details

- **Audio output mode:** Stereo
- **Brand:** Infinity
- **Connectivity technology:** Coaxial
- **Frequency response:** 21 KHz
- **Speaker maximum output power:** 50 Watts

## Images

![Infinity REF307F Reference Series 3.5" Extreme-Performance Automotive coaxial Speakers - Image 1](https://m.media-amazon.com/images/I/61lfOOqLRVL.jpg)
![Infinity REF307F Reference Series 3.5" Extreme-Performance Automotive coaxial Speakers - Image 2](https://m.media-amazon.com/images/I/61Wbv0Ehi+L.jpg)
![Infinity REF307F Reference Series 3.5" Extreme-Performance Automotive coaxial Speakers - Image 3](https://m.media-amazon.com/images/I/61gXWdFTQzL.jpg)
![Infinity REF307F Reference Series 3.5" Extreme-Performance Automotive coaxial Speakers - Image 4](https://m.media-amazon.com/images/I/71rIOb3JvwL.jpg)
![Infinity REF307F Reference Series 3.5" Extreme-Performance Automotive coaxial Speakers - Image 5](https://m.media-amazon.com/images/I/51gnphTBGnL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I love Infinity. Perfect.
*by B***Y on 4 July 2026*

Infinity makes amazing car audio products, I’ve been using them for more than 20 years. You can never go wrong with any of their products. The design is clean and unobtrusive, they will match well with any vehicle trim. The sound is crisp and clear, perfect audio quality for high frequencies. For the quality these are far cheaper than their competitors.

### ⭐ Old, Worn, and Not the 307f I Expected！
*by W***N on 10 August 2025*

Received as a replacement but it’s clearly old and worn. Not the 307f I expected, and completely useless for my setup. Total disappointment.

### ⭐⭐⭐⭐⭐ Ram 1500 Crew Cab Classic 2023 Dash Speakers
*by C***Y on 25 August 2025*

Amazing sound over stock 2013 Ram 1500 Classic Dash speakers. Twice the volume and twice the clarity. If you purchase the harness adapter you can install both in under 10 minutes.

## Frequently Bought Together

- Infinity REF307F Reference Series 3.5" Extreme-Performance Automotive coaxial Speakers
- RED WOLF Front Dash Tweeters Speaker Wiring Harness Adapter Connector Plug Replacement for Dodge Ram Jeep Chrysler 2005-2022 Aftermarket Dash Tweeters Audio Cable Plug 2PC
- Metra 72-6514 Speaker Harness for Select Chrysler/Dodge Vehicles

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**Shop now:** [https://www.desertcart.com.sa/products/617502769-infinity-ref307f-reference-series-3-5-extreme-performance-automotive-coaxial](https://www.desertcart.com.sa/products/617502769-infinity-ref307f-reference-series-3-5-extreme-performance-automotive-coaxial)

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*Product available on Desertcart Saudi Arabia*
*Store origin: SA*
*Last updated: 2026-10-14*