--- product_id: 499585334 title: "Primus 603CF 6.5 Inch 2-Way Car Speaker System" brand: "infinity" price: "€ 267.31" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.pt/products/499585334-primus-603cf-6-5-inch-2-way-car-speaker-system store_origin: PT region: Portugal --- # Edge-driven silk dome tweeter for crisp highs 35% larger Plus One woofer cone area Compact design fits tight car spaces Primus 603CF 6.5 Inch 2-Way Car Speaker System **Brand:** infinity **Price:** € 267.31 **Availability:** ✅ In Stock ## Summary > 🚗 Elevate your drive with sound that commands attention! ## Quick Answers - **What is this?** Primus 603CF 6.5 Inch 2-Way Car Speaker System by infinity - **How much does it cost?** € 267.31 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/499585334-primus-603cf-6-5-inch-2-way-car-speaker-system) ## 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 - • **Complete Upgrade Kit:** Includes everything from tweeters to crossovers and mounting hardware—ready to transform your car audio setup out of the box. - • **Immersive Soundstage:** Experience lifelike vocals and crystal-clear cymbals with Infinity’s patented Plus One woofer cone and edge-driven silk dome tweeter technology. - • **Effortless Installation:** Compact, flush-mount design fits seamlessly into more vehicles—no cutting or modifications needed, perfect for the modern car enthusiast. - • **Signature Infinity Sound:** Expertly tuned to deliver a balanced, rich audio profile that elevates your daily commute or weekend road trip. - • **Heat-Resistant Reliability:** Super-rigid vented basket frames cool voice coils efficiently, ensuring consistent performance and durability on every drive. ## Overview The Infinity Primus 603CF is a 6.5-inch 2-way component car speaker system featuring Harman’s patented Plus One woofer cone for 35% more cone area, edge-driven silk dome tweeters for expanded high-frequency clarity, and a compact design for easy installation. Its vented basket frame cools voice coils for reliable performance, delivering a signature Infinity sound with 60W RMS power handling and a frequency response from 55Hz to 20kHz. This system includes all necessary components and hardware for a seamless upgrade to your vehicle’s audio. ## 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 ## 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 | |---------------|-------| | Antenna Location | car | | Asin | B0B8F3TWS6 | | Audio Driver Size | 6.5 inches | | Audio Driver Type | Dynamic Driver | | Audio Output Mode | Stereo | | Best Sellers Rank | #48,846 in Electronics (See Top 100 in Electronics) #392 in Car Coaxial Speakers | | Brand | Infinity | | Built In Media | 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 | | Color | black | | Compatible Devices | Car Audio System, Laptop, MP3 Player, Smartphone, Tablet | | Compatible With Vehicle Type | & SUVs, Select Cars, Truck | | Connectivity Protocol | Coaxial | | Connectivity Technology | Coaxial | | Control Method | Touch | | Controller Type | Voice Control | | Customer Package Type | FFP | | Customer Reviews | 3.8 3.8 out of 5 stars (107) 3.8 out of 5 stars | | Enclosure Material | Polypropylene, Silk, Plastic | | Frequency Response | 55 hertz | | Impedance | 3 ohm | | Is Waterproof | FALSE | | Item Dimensions D X W X H | 15"D x 5"W x 8"H | | Manufacturer | Infinity | | Model Name | PR603CF | | Model Number | PR603CF | | Mounting Type | Flush Mount | | Number Of Audio Channels | 2 | | Number Of Items | 1 | | Power Source | Corded Electric | | Series Number | 603 | | Speaker Maximum Output Power | 120 watts | | Speaker Size | 6.5 inches | | Speaker Type | Component | | Subwoofer Connectivity Technology | Wired | | Subwoofer Diameter | 6.5 inches | | Tweeter Diameter | 0.75 inches | | Unit Count | 1 Count | | Upc | 050667379766 | | Warranty Description | 1-Year Manufacturer Warranty | | Warranty Type | Limited | | Woofer Diameter | 6.5 inches | ## Product Details - **Audio Output Mode:** Stereo - **Brand:** Infinity - **Connectivity Technology:** Coaxial - **Frequency Response:** 55 hertz - **Speaker Maximum Output Power:** 120 watts ## Images ![Primus 603CF 6.5 Inch 2-Way Car Speaker System - Image 1](https://m.media-amazon.com/images/I/61nnQEeLp5L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Slammin! *by on Reviewed in the United States January 16, 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. ### ⭐⭐⭐⭐⭐ WOW. *by on Reviewed in the United States May 14, 2025* I installed these in my 2022 Honda Accord Hybrid. They sound WORLDS better than the factory speakers, and I'm not even running an amplifier yet. Clarity of highs are fantastic and I was even surprised by the bass response. The bass isn't going to blow you socks off, but factory headunits don't provide enough power to get the speakers really low, so don't expect the bass to shake the whole car... BUT as someone who loves car audio, I am pleasant surprised at these, they make me re-think even needing to add an aftermarket amplifier.Having a dedicated woofer + tweeter is the only way to go. Coaxial speakers work if you don't have space for an independent tweeter, but if you do.. let that woofer concentrate on driving all the lows & mids, and that tweeter handle the higher range. The 3ohm impedance really pulls the most power out of your headunit as possible. Another thing to note here is their sensitivity is 92 dB at 2.83 volts, which is fantastic if you DON'T plan an adding an amplifier... they have 60w RMS so adding a smaller amplifier (Kicker Key 200.4 for example) will power these nicely and sound even better. I'm guessing their bass performance will pick up nicely as well.Always buy infinity!! ### ⭐ Not great *by on Reviewed in the United States May 4, 2026* Meh - just put these in my 2015 Mercedes sprinter (airstream build). They sound a tiny bit better than the stock speakers. nothing special. clarity is the same, the bass response was better but not great. If I had to do it over again I would not have wasted the time and money putting these in. bummer ## Frequently Bought Together - Infinity Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair - Infinity Primus 603F Primus Series 6-1/2" 2-Way Multi-Element Speakers, Pair - RED WOLF Door Speaker Wiring Harness Replacement for Chevy GMC Silverado Sierra 1995-2009, Buick 1995-2006, Cadillac 1988-1999 Install Aftermarket Audio Speaker Wire Cable 4 PCS --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/499585334-primus-603cf-6-5-inch-2-way-car-speaker-system](https://www.desertcart.pt/products/499585334-primus-603cf-6-5-inch-2-way-car-speaker-system) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-08-30*