---
product_id: 617502769
title: "Infinity REF307F Reference Series 3.5\" Extreme-Performance Automotive coaxial Speakers"
brand: "infinity"
price: "₱21896"
currency: PHP
in_stock: true
url: https://www.desertcart.ph/products/617502769-infinity-ref307f-reference-series-3-5-extreme-performance-automotive-coaxial
store_origin: PH
region: Philippines
---

# 50W max output power Plus One™ oversized woofer cone Adjustable tweeter output control Infinity REF307F Reference Series 3.5" Extreme-Performance Automotive coaxial Speakers

**Brand:** infinity
**Price:** ₱21896
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your drive with sound that commands attention — don’t just listen, experience it!

## Quick Answers

- **What is this?** Infinity REF307F Reference Series 3.5" Extreme-Performance Automotive coaxial Speakers by infinity
- **How much does it cost?** ₱21896 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/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

- • **Custom Sound Tuning:** Tweeter output level control lets you optimize high frequencies for your car’s unique acoustics.
- • **Powerful Bass Boost:** Patented Plus One™ cones provide larger surface area for deeper, punchier bass and richer midrange.
- • **Seamless Fit & Finish:** Compact, flush-mount design fits most factory speaker locations for a sleek, professional upgrade.
- • **Versatile Compatibility:** Available in multiple sizes and perfect for both car audio and home surround sound systems.
- • **Audiophile-Grade Clarity:** Edge-driven textile tweeters deliver smooth, non-fatiguing highs even at max volume.

## Overview

The REF307F Reference Series 3.5" coaxial speakers by Infinity combine audiophile-grade tweeters with patented Plus One™ oversized woofers to deliver crisp highs and powerful bass. Featuring adjustable tweeter output control and a compact design, these 50W speakers fit most vehicles seamlessly, offering a premium upgrade from factory audio systems.

## 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 |
| Best Sellers Rank | #67,334 in Electronics ( See Top 100 in Electronics ) #213 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 |
| Control Method | Touch |
| Customer Package Type | FFP |
| Customer Reviews | 4.6 4.6 out of 5 stars (168) |
| Enclosure Material | Plastic |
| 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 | INFSPKRF307FUS |
| 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 |
| 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.

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

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-07-15*