---
product_id: 510755539
title: "Infinity Primus 603F 6.5 Inch 2 Way Car Speakers - Pair"
brand: "infinity"
price: "¥37432"
currency: JPY
in_stock: true
reviews_count: 10
url: https://www.desertcart.jp/products/510755539-infinity-primus-603f-6-5-inch-2-way-car-speakers
store_origin: JP
region: Japan
---

# Edge-driven silk dome tweeter for crisp highs 35% larger Plus One woofer cone area Vented basket cools voice coils efficiently Infinity Primus 603F 6.5 Inch 2 Way Car Speakers - Pair

**Brand:** infinity
**Price:** ¥37432
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your drive with sound that speaks volumes—don’t just listen, experience Infinity Primus!

## Quick Answers

- **What is this?** Infinity Primus 603F 6.5 Inch 2 Way Car Speakers - Pair by infinity
- **How much does it cost?** ¥37432 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/510755539-infinity-primus-603f-6-5-inch-2-way-car-speakers)

## 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

- • **Cool Under Pressure:** Super-rigid vented baskets act like a fan to wick heat away from voice coils, ensuring reliable performance on every drive.
- • **Crystal-Clear Highs:** Edge-driven silk dome tweeters extend high-frequency range, capturing every vocal nuance and cymbal shimmer with pristine clarity.
- • **Expand Your Soundstage:** Patented Plus One woofer cone delivers up to 35% more cone area for richer, fuller bass that commands attention.
- • **Seamless Fit, Zero Hassle:** Compact design engineered for easy installation in tight vehicle spaces—upgrade your audio without cutting or modifications.
- • **Consistent Infinity Signature:** Expertly tuned to maintain the iconic Infinity sound, delivering balanced, immersive audio that makes every ride unforgettable.

## Overview

The Infinity Primus 603F is a 6.5-inch 2-way multi-element car speaker pair featuring Harman’s patented Plus One woofer cone for 35% more cone area, edge-driven silk dome tweeters for extended high frequencies, and vented basket frames for superior cooling. Designed for easy installation in tight spaces, these speakers deliver a consistent, high-fidelity Infinity sound signature with 50W RMS power handling and a frequency response from 55Hz to 20kHz, perfect for upgrading your vehicle’s audio system with rich bass and crystal-clear highs.

## Description

Infinity PRIMUS 603F Primus Series 6-1/2" 2-way Multi-element Speakers, Pair If you are looking to upgrade your driving experience with amazing audio, Infinity Primus has you covered with their patented Plus One woofer cone and edge-driven dome technology. Infinity's sound signature brings you lifelike vocals, crisp cymbals, and well-defined bass. Plus, their rich all-black color scheme seamlessly integrates into the car interior. Their radial starburst pattern is inspired by the icon of a supernova, punctuated with the mirror-like copper mobius strip logo. Features - Plus One Woofer Cone Architecture Edge-driven Silk Dome Tweeter Engineered to Fitment and Easy Installation Vented Basket Frame Design for Cooling Competitively Tuned In The Box - 2x Speakers 8x Screws 8x Speed clips 2x 18AWG, 200mm length pigtail cable 1x Foam gaskets 2x Brand stickers 1x Owner’s manual General Specifications - Woofer: 6-1/2" Polypropylene Driver Tweeter: 1/2" Silk Dome Power Handling: 50Wrms, 150W peak Sensitivity (2.83V@1m): 92dB Frequency Response (-6dB): 55Hz – 20kHz Nominal Impedance: 3.0 ohms Crossover Point: 5kHz@6dB/octave

Review: Upgraded my truck speakers - These speakers are great quality they sound clean and I'm happy with this purchase
Review: impressive factory replacement - good factory replacement for a stock system good punch for mid bass just don't expect low end they are def not that they Excel in rock music so far but def better than factory clarity wise yes I have some sound deadening done I'm sure that helps but why replace something and not put the best chances for success with it

## Features

- Harman’s patented Plus One cones provide more overall speaker cone area (up to 35%) than other cones in its class
- Infinity Primus speakers are engineered with edge-driven silk dome tweeters which expand the high-frequency range and ensure you'll hear all the natural detail of your favorite tunes.
- Infinity Primus speakers feature a compact design for easy installation in tight spaces, allowing them to fit into more vehicles without the need for modifications and cutting.
- The super-rigid vented baskets help to cool the voice coils making for a reliable speaker. They provide a real world benefit by wicking heat way from the motor structure almost like a fan as the cone moves through its stroke.
- Infinity Primus speakers are carefully tuned to ensure each line has the consistent Infinity sound signature.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B8F561J2 |
| Antenna Location | car |
| Audio Driver Size | 6.5 inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Best Sellers Rank | #167,750 in Electronics ( See Top 100 in Electronics ) #1,934 in Car Coaxial Speakers |
| Brand | Infinity |
| Built-In Media | 2x Speakers, 8x Screws, 8x Speed clips, 2x 18AWG, 200mm length pigtail cable, 1x Foam gaskets, 2x Brand stickers, 1x Owner’s manual |
| Color | black |
| Compatible Devices | Car |
| Compatible with Vehicle Type | & SUVs, Select Cars, Truck |
| Connectivity Protocol | Coaxial |
| Connectivity Technology | Coaxial |
| Control Method | Touch |
| Controller Type | Voice Control |
| Customer Reviews | 4.2 out of 5 stars 54 Reviews |
| Enclosure Material | Polypropylene, Silk |
| Frequency Response | 20 KHz |
| Is Waterproof | FALSE |
| Item Dimensions D x W x H | 15"D x 4"W x 8"H |
| Item Weight | 3.1 pounds |
| Manufacturer | Infinity |
| Model Name | PR603F |
| Model Number | PR603F |
| Mounting Type | Flush Mount |
| Number of Audio Channels | 2 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Speaker Maximum Output Power | 100 watts |
| Speaker Size | 6.5 inches |
| Speaker Type | Tweeter |
| Specific Uses For Product | car |
| Subwoofer Connectivity Technology | Wired |
| Tweeter Diameter | 1 inches |
| UPC | 050667379773 |
| Unit Count | 1 Count |
| Warranty Description | 1-Year Manufacturer Warranty |
| Warranty Type | Limited |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 6.5 inches |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** Infinity
- **Connectivity Technology:** Coaxial
- **Frequency Response:** 20 KHz
- **Speaker Maximum Output Power:** 100 Watts

## Images

![Infinity Primus 603F 6.5 Inch 2 Way Car Speakers - Pair - Image 1](https://m.media-amazon.com/images/I/61ncsOatfLL.jpg)
![Infinity Primus 603F 6.5 Inch 2 Way Car Speakers - Pair - Image 2](https://m.media-amazon.com/images/I/61l8Kd6myfL.jpg)
![Infinity Primus 603F 6.5 Inch 2 Way Car Speakers - Pair - Image 3](https://m.media-amazon.com/images/I/61pGjJK8RsL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Upgraded my truck speakers
*by B***E on September 23, 2025*

These speakers are great quality they sound clean and I'm happy with this purchase

### ⭐⭐⭐⭐⭐ impressive factory replacement
*by S***N on November 2, 2025*

good factory replacement for a stock system good punch for mid bass just don't expect low end they are def not that they Excel in rock music so far but def better than factory clarity wise yes I have some sound deadening done I'm sure that helps but why replace something and not put the best chances for success with it

### ⭐⭐⭐⭐ Good budget option
*by E***A on July 11, 2025*

Good budget option sounds nice and crisp most important thing is these have Silk tweeters. Bass is lacking but that's expected at this price range these sound real nice running off head unit power

## Frequently Bought Together

- Infinity Primus 603F Primus Series 6-1/2" 2-Way Multi-Element Speakers, Pair
- Infinity Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair
- Metra 72-4568 Speaker Harness for Select 1988-UP GM Vehicles,Black

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**Shop now:** [https://www.desertcart.jp/products/510755539-infinity-primus-603f-6-5-inch-2-way-car-speakers](https://www.desertcart.jp/products/510755539-infinity-primus-603f-6-5-inch-2-way-car-speakers)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-12*