---
product_id: 581899071
title: "Primus 603CF Primus Series 6-1/2\" 2-Way Component Speaker System, Pair"
brand: "infinity"
price: "€ 295.52"
currency: EUR
in_stock: true
reviews_count: 5
category: "Infinity"
url: https://www.desertcart.it/products/581899071-primus-603cf-primus-series-6-1-2-2-way-component
store_origin: IT
region: Italy
---

# Edge-driven silk dome tweeters for crisp highs 35% larger Plus One woofer cone area Compact design fits tight vehicle spaces Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair

**Brand:** infinity
**Price:** € 295.52
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your drive with sound that’s impossible to ignore!

## Quick Answers

- **What is this?** Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair by infinity
- **How much does it cost?** € 295.52 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/581899071-primus-603cf-primus-series-6-1-2-2-way-component)

## 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

- • **Silk Dome Tweeters:** Edge-driven technology delivers crystal-clear highs and lifelike vocals, making every note pop.
- • **Space-Savvy Design:** Engineered for seamless installation in tight spots—upgrade your sound without cutting or modifications.
- • **Powerful Plus One Woofer:** Experience 35% more cone area for richer, fuller bass that commands attention on every drive.
- • **Complete Installation Kit:** Includes everything from crossovers to mounts—get your premium sound system up and running hassle-free.
- • **Consistent Infinity Sound:** Expertly tuned to maintain the signature Infinity audio clarity and balance across all frequencies.

## Overview

The Infinity Primus 603CF is a 6.5-inch 2-way component speaker system featuring Harman’s patented Plus One woofer cone for 35% more surface area, edge-driven silk dome tweeters for expanded high-frequency clarity, and a compact design tailored for easy installation in tight vehicle spaces. With a power handling of 60W RMS (180W peak), 92dB sensitivity, and a frequency response from 55Hz to 20kHz, it delivers crisp mids and highs with a consistent Infinity sound signature. The package includes all necessary mounting hardware and crossovers, making it ideal for custom audio upgrades that demand both performance and style.

## Description

Infinity PRIMUS 603CF Primus Series 6-1/2" 2-way Component Speaker System, 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 2x Tweeters 2x In-line crossovers 8x Screws for speakers 6x Screws for tweeter kits 8x Speed clips 2x Threaded flush-mount adapters 2x Plastics locking nuts 2x Surface-mount cups 2x Starfish tweeter mounts 2x Foam gaskets 2x Brand stickers 1x Owner’s manual General Specifications - Woofer: 6.5" Polypropylene Driver Tweeter: 3/4" Silk Dome Power Handling: 60Wrms, 180W peak Sensitivity (2.83V@1m): 92dB Frequency Response (-6dB): 55Hz – 20kHz Nominal Impedance: 3.0 ohms Crossover Point: 5kHz@12dB/octave.

Review: Was unable to find the model within Canada/US. Purchased and installed with factory stereo/amp. Slight improvement over factory speakers. Still going strong nearly a year later.
Review: It was time to upgrade the speakers in my racecar; the walmart coax pioneers had to go. I spent some time doing some review reading, and after many hours settled on the Infinity primus component speakers. To note, I am familiar with Infinity as a brand, but had no prior experience listening to them in person. I knew from reading many reviews that Infinity's have a predisposition to be "bright" or "sharp" in their tonality, and that is completely true, these are ear shattering, like stepping outside in the snow, after you brushed your teeth, with a mint in your mouth, and inhaling very quickly. A quick adjustment of the treble in my head unit fixed that, vocals are now crisp and sharp, but not too shrill. I had to get creative with the tweeter mounts, but I am a fabricator by trade, so it did not take me long to figure something out. I really like the mounts they give you for the tweeters, they were very handy and made the job go by quicker. The primus midranges may not be as nicely constructed as Infinity's higher end models, but I was looking to keep weight down, and in my 1986 300zx, space in the door is limited. They fit perfectly with no modification needed. I want to be clear these are not for bass, that is not their intended purpose. Their purpose is to be bright and clear and provide crisp mids and highs, which they do wonderfully for the money. You need to pair these with a quality subwoofer to really bring the ensemble together. I went with a 10" JL microsub, which has complemented the infinitys quite well.

## 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.
- Infinity Primus speakers are carefully tuned to ensure each line has the consistent Infinity sound signature.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B8F3TWS6 |
| Colour | black |
| Compatible devices | Laptop, Smartphone, Tablet, Television |
| Control method | Touch |
| Impedance | 3 Ohms |
| Included components | 2x Speakers, 2x Tweeters, 2x In-line crossovers, 8x Screws for speakers, 6x Screws for tweeter kits, 8x Speed clips, 2x Threaded flush-mount adapters, 2x Plastics locking nuts, 2x Surface-mount cups, 2x Starfish tweeter mounts, 2x Foam gaskets, 2x Brand stickers, 1x Owner’s manual |
| Is waterproof | False |
| Item model number | PR603CF |
| Manufacturer | Infinity |
| Model name | PR603CF |
| Mounting type | Flush Mount |
| Power source | Corded Electric |
| Product dimensions | 38.1D x 12.7W x 20.3H centimeters |
| Recommended uses for product | For Custom Audio Installations, For Surround Sound Systems |
| Speaker size | 6.5 Inches |
| Speaker type | Component |
| Special features | Tweeters |
| Subwoofer diameter | 6.5 Inches |
| Surround sound channel configuration | 2 |

## Product Details

- **Audio output mode:** Stereo
- **Brand:** Infinity
- **Connectivity technology:** Coaxial
- **Frequency response:** 55 Hz
- **Speaker maximum output power:** 120 Watts

## Images

![Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair - Image 1](https://m.media-amazon.com/images/I/61nnQEeLp5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ Review
*by A***R on 8 January 2025*

Was unable to find the model within Canada/US. Purchased and installed with factory stereo/amp. Slight improvement over factory speakers. Still going strong nearly a year later.

### ⭐⭐⭐⭐⭐ Review
*by Z***D on 16 January 2026*

It was time to upgrade the speakers in my racecar; the walmart coax pioneers had to go. I spent some time doing some review reading, and after many hours settled on the Infinity primus component speakers. To note, I am familiar with Infinity as a brand, but had no prior experience listening to them in person. I knew from reading many reviews that Infinity's have a predisposition to be "bright" or "sharp" in their tonality, and that is completely true, these are ear shattering, like stepping outside in the snow, after you brushed your teeth, with a mint in your mouth, and inhaling very quickly. A quick adjustment of the treble in my head unit fixed that, vocals are now crisp and sharp, but not too shrill. I had to get creative with the tweeter mounts, but I am a fabricator by trade, so it did not take me long to figure something out. I really like the mounts they give you for the tweeters, they were very handy and made the job go by quicker. The primus midranges may not be as nicely constructed as Infinity's higher end models, but I was looking to keep weight down, and in my 1986 300zx, space in the door is limited. They fit perfectly with no modification needed. I want to be clear these are not for bass, that is not their intended purpose. Their purpose is to be bright and clear and provide crisp mids and highs, which they do wonderfully for the money. You need to pair these with a quality subwoofer to really bring the ensemble together. I went with a 10" JL microsub, which has complemented the infinitys quite well.

### ⭐⭐⭐⭐⭐ Review
*by ب***ي on 11 September 2025*

ممتاز

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-02-15*