{"product_id":"the-door-panel-upgrade-coaxial-car-speakers","title":"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003eFactory Speakers Are the Weakest Link in the Whole System. Head units get replaced, amplifiers get added, and the sound stays flat, because the drivers in the doors were specified for a budget rather than for a listener. A factory paper cone with a small magnet and a thin surround has a mechanical ceiling that no amount of head-unit processing can lift. Changing the speakers is the one upgrade that changes the sound at every volume and every source.\u003c\/p\u003e\n\u003cp\u003eCoaxial rather than separate. A coaxial driver mounts the tweeter on a post at the centre of the woofer so the whole speaker occupies a single factory cut-out. That matters in a door, because a component set needs somewhere to site the tweeter and a crossover, and a drop-in coaxial needs neither. High sensitivity is the other half of the case, because a speaker that converts an amplifier's watts efficiently plays louder from the head unit alone.\u003c\/p\u003e\n\u003cp\u003eSized to the aperture, not to the marketing. The set covers 4 inch, 5 inch and 6.5 inch, which between them account for the vast majority of factory door positions, and each size is built with a shallow enough mounting depth to fit behind a standard door card. The cone surface and the surround are chosen for the moisture and temperature swings a door actually sees, which is where a cheap speaker gives up before its magnet does.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eIt is not a louder stereo. It is the same stereo finally reaching the cabin.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-features\" style=\"margin-top:30px;\"\u003e\n\u003ch3 style=\"font-size:20px;margin-bottom:14px;\"\u003eWhat the Upgrade Changes\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f2f2f2;\"\u003e✦ Coaxial design, tweeter mounted on the woofer post\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f2f2f2;\"\u003e✦ Drop-in fit for factory cut-outs, no separate tweeter siting\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f2f2f2;\"\u003e✦ 4, 5 and 6.5 inch sizes covering most door positions\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f2f2f2;\"\u003e✦ High sensitivity, plays well from a factory head unit\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f2f2f2;\"\u003e✦ Shallow mounting depth for standard door cards\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f2f2f2;\"\u003e✦ Cone and surround chosen for moisture and temperature swings\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f2f2f2;\"\u003e✦ Universal application across common mounting patterns\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f2f2f2;\"\u003e✦ Improves every source and every volume, not only loud playback\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-specs\" style=\"margin-top:30px;\"\u003e\n\u003ch3 style=\"font-size:20px;margin-bottom:14px;\"\u003eSpeaker Record\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"border-bottom:1px solid #eee;padding:10px 0;\"\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Coaxial, two-way in a single frame\u003c\/li\u003e\n\u003cli style=\"border-bottom:1px solid #eee;padding:10px 0;\"\u003e\n\u003cstrong\u003eAvailable sizes:\u003c\/strong\u003e 4 inch, 5 inch, 6.5 inch\u003c\/li\u003e\n\u003cli style=\"border-bottom:1px solid #eee;padding:10px 0;\"\u003e\n\u003cstrong\u003eNominal impedance:\u003c\/strong\u003e Standard automotive load\u003c\/li\u003e\n\u003cli style=\"border-bottom:1px solid #eee;padding:10px 0;\"\u003e\n\u003cstrong\u003eSensitivity:\u003c\/strong\u003e High, suited to factory head-unit power\u003c\/li\u003e\n\u003cli style=\"border-bottom:1px solid #eee;padding:10px 0;\"\u003e\n\u003cstrong\u003eMagnet:\u003c\/strong\u003e Ferrite, sized for door mounting\u003c\/li\u003e\n\u003cli style=\"border-bottom:1px solid #eee;padding:10px 0;\"\u003e\n\u003cstrong\u003eMounting depth:\u003c\/strong\u003e Shallow, fits behind standard door cards\u003c\/li\u003e\n\u003cli style=\"border-bottom:1px solid #eee;padding:10px 0;\"\u003e\n\u003cstrong\u003eGrille:\u003c\/strong\u003e Supplied with the set where listed\u003c\/li\u003e\n\u003cli style=\"border-bottom:1px solid #eee;padding:10px 0;\"\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Universal door, shelf and parcel-shelf positions\u003c\/li\u003e\n\u003cli style=\"border-bottom:1px solid #eee;padding:10px 0;\"\u003e\n\u003cstrong\u003eCone treatment:\u003c\/strong\u003e Moisture and temperature resistant\u003c\/li\u003e\n\u003cli style=\"border-bottom:1px solid #eee;padding:10px 0;\"\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-applications\" style=\"margin-top:30px;\"\u003e\n\u003ch3 style=\"font-size:20px;margin-bottom:14px;\"\u003eWhere the Coaxials Go\u003c\/h3\u003e\n\u003cp\u003eThe single most common job is replacing the four door speakers in a vehicle whose head unit has already been upgraded, because that is the point at which the factory drivers become the audible bottleneck. A van or work vehicle uses the same set differently, since road noise makes sensitivity more valuable than power handling and a high-efficiency coaxial plays clearly from modest head-unit output. A camper or caravan build mounts them in cabinetry where a shallow mounting depth is the hard constraint. A classic or older car benefits most of all, because period speakers were built to different expectations and the aperture is usually standard enough for a direct coaxial swap. In every case the change is the same, which is replacing a driver specified for cost with one specified for output.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-faq\" style=\"margin-top:32px;\"\u003e\n\u003ch3 style=\"font-size:20px;margin-bottom:16px;\"\u003eSpeaker Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 4px 0;\"\u003eQ: Do I need an amplifier to use these?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#555;\"\u003eA: No. They are built with high sensitivity so a factory head unit can drive them cleanly, which makes them the right first upgrade. If you already run an amplifier they will take the extra power as well, but they do not require one to sound substantially better than the speakers being replaced.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 4px 0;\"\u003eQ: What is a coaxial speaker and why does it matter here?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#555;\"\u003eA: The tweeter is mounted on a post at the centre of the woofer rather than in a separate location, so one driver reproduces the full range from a single cut-out. That is what makes the swap a drop-in job instead of a build involving separate tweeter pods and a crossover.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 4px 0;\"\u003eQ: How do I choose between 4, 5 and 6.5 inch?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#555;\"\u003eA: Measure the factory aperture in the door card rather than assuming, since the same model year can differ between trim levels. Choose the size that matches the existing cut-out, because the larger driver is only better if the door actually accepts it without an adapter ring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 4px 0;\"\u003eQ: Will they fit behind the factory grille?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#555;\"\u003eA: Each size is built with a shallow mounting depth so it clears a standard door card, and the set is intended to sit behind the original grille. Check the mounting depth in the variant details against the space you measure behind your door card before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 4px 0;\"\u003eQ: Can I use them with the factory wiring?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#555;\"\u003eA: Yes. The factory speaker wiring and connector can normally be reused, and any adapter harness for your vehicle is a separate small part rather than part of this set. Splice or adapt the original connector rather than running new cable unless you are also adding an amplifier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp style=\"font-weight:600;margin:0 0 4px 0;\"\u003eQ: Do they come as a pair?\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#555;\"\u003eA: Check the variant you select, because the listing covers different sizes and quantities. Ordering a pair for each axle is the normal approach, so confirm the quantity in the variant details before checkout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-gallery\" style=\"margin-top:30px;text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S905876256e2b434c82d98b5c0a1facc6s.webp?v=1731022334\" alt=\"coaxial car speaker set in four five and six and a half inch sizes\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sa84963b78bf943e780a623b291e6478al.webp?v=1731022335\" alt=\"coaxial car speaker set in four five and six and a half inch sizes\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S7d745f714f7d4fa1b658f69438513e058.webp?v=1731022334\" alt=\"coaxial car speaker set in four five and six and a half inch sizes\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sd7cb2397623c41a69c8827f85c24a1e83.webp?v=1731022334\" alt=\"coaxial car speaker set in four five and six and a half inch sizes\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S780c8633e98d47e49d664e80326d150bo.webp?v=1731022334\" alt=\"coaxial car speaker set in four five and six and a half inch sizes\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S9afef644e74d44aa84e8ca9634ab5940l.webp?v=1731022334\" alt=\"coaxial car speaker set in four five and six and a half inch sizes\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/2cda34ced66877194a409f6578a25f1e.webp?v=1791684383\" alt=\"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/15e7fda18ea9e986afdb74da722dcb4f.webp?v=1791684384\" alt=\"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/dad1fcef8d6e01fe95b54e15a0ac26ef.webp?v=1791684386\" alt=\"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/2ff753f70cfd3f074796aefa4f847ced.webp?v=1791684388\" alt=\"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/ba9fffe3e6d9f7737f33785400065b89.webp?v=1791684390\" alt=\"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/dba6b1c2129fdcea749d795479b4f020.webp?v=1791684392\" alt=\"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/b79bb3b64f1a208ff99a3284eab29fa8.webp?v=1791684394\" alt=\"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/905a0eed7da300b7edd0a783403aa193.webp?v=1791684396\" alt=\"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/c3da2c7b144a2cd46ba2ffa3042d637f.webp?v=1791684398\" alt=\"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/662c87343855cd1b59cb0f96e498c547.webp?v=1791684400\" alt=\"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/ce7b3eb6d8f3f3ce7ace8c578137840a.webp?v=1791684402\" alt=\"The Door Panel Upgrade | Coaxial Car Speaker Set, 4 to 6.5 Inch\" style=\"max-width:100%;width:100%;height:auto;margin-bottom:12px;display:block;border-radius:4px;\"\u003e\n\u003cimg 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