--- product_id: 665585552 title: "Infinity Primus 603CF Primus Series 6-1/2\" 2-Way Component Speaker System, Pair" brand: "infinity" price: "฿2847" currency: THB in_stock: false url: https://www.desertcart.co.th/products/665585552-infinity-primus-603cf-primus-series-6-1-2-2-way store_origin: TH region: Thailand --- # Edge-driven silk dome tweeters for crisp highs 35% larger Plus One woofer cone area Vented basket design for superior cooling Infinity Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair **Brand:** infinity **Price:** ฿2847 **Availability:** ❌ Out of Stock ## Summary > 🎵 Upgrade your drive with sound that turns heads and stops time! ## Quick Answers - **What is this?** Infinity Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair by infinity - **How much does it cost?** ฿2847 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/665585552-infinity-primus-603cf-primus-series-6-1-2-2-way) ## 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 actively wick heat away, ensuring consistent performance and long-term reliability. - • **Crystal-Clear Highs:** Edge-driven silk dome tweeters extend high-frequency range, revealing every vocal nuance and cymbal shimmer. - • **Expand Your Soundstage:** Plus One woofer cone delivers up to 35% more cone area for richer, fuller bass that commands attention. - • **Signature Infinity Sound:** Expertly tuned to maintain the iconic Infinity sound signature, elevating your in-car audio experience. - • **Seamless Fit, Zero Hassle:** Compact design engineered for easy installation in tight vehicle spaces—no cutting or modifications needed. ## Overview The Infinity Primus 603CF is a 6.5-inch 2-way component speaker system featuring patented Plus One woofer cones for 35% more cone area, edge-driven silk dome tweeters for extended high frequencies, and vented basket frames for enhanced cooling. Designed for easy installation in most vehicles, it delivers a powerful 60W RMS (180W peak) output with a 92dB sensitivity and a frequency response from 55Hz to 20kHz, ensuring a rich, detailed, and reliable audio experience. ## Description Infinity PRIMUS 603CF Primus Series 6-1/2" 2-way Component Speaker System, PairIf 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 | |---------------|-------| | Mounting Type | Flush Mount | | Material | Polypropylene, Silk | | Model Name | PR603CF | | Speaker Type | Component | | Special Feature | Tweeters | | Recommended Uses For Product | car | | Subwoofer Diameter | 6.5 Inches | | Net Quantity | 1.0 Count | | Surround Sound Channel Configuration | 2.0 | | Colour | black | | 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 | | Impedance | 3 Ohm | | Is Waterproof | FALSE | | Number of Items | 1 | | Control Method | Voice | | Speaker Size | 6.5 Inches | | Power Source | Corded Electric | | Brand Name | Infinity | | Colour Name | black | | Vehicle Speaker Size | 6.5 | | Product Dimensions | 38.1 x 12.7 x 20.32 cm; 1.93 kg | | Item model number | PR603CF | | Manufacturer | Infinity | | Item Weight | 1 kg 930 g | ## Product Details - **Brand:** Infinity - **Speaker Maximum Output Power:** 120 Watts - **Frequency Response:** 55 Hz - **Connectivity Technology:** Coaxial - **Audio Output Mode:** Stereo ## Images ![Infinity Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair - Image 1](https://m.media-amazon.com/images/I/61nnQEeLp5L.jpg) ![Infinity Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair - Image 2](https://m.media-amazon.com/images/I/61YoXToNsYL.jpg) ![Infinity Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair - Image 3](https://m.media-amazon.com/images/I/51eyO2oaVgL.jpg) ![Infinity Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair - Image 4](https://m.media-amazon.com/images/I/51VujP8gipL.jpg) ![Infinity Primus 603CF Primus Series 6-1/2" 2-Way Component Speaker System, Pair - Image 5](https://m.media-amazon.com/images/I/51ejEqBDvgL.jpg) ## 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.co.th/products/665585552-infinity-primus-603cf-primus-series-6-1-2-2-way](https://www.desertcart.co.th/products/665585552-infinity-primus-603cf-primus-series-6-1-2-2-way) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-22*