{"product_id":"soundqubed-hdx-series-5-25-coaxial-2-way-speakers-pair","title":"SoundQubed HDX Series 5.25\" Coaxial 2-way Speakers (pair)","description":"\u003ch2\u003e\n\u003cstrong\u003eSoundQubed HDX Series 5.25\" 2-Way Coaxial Speakers\u003c\/strong\u003e — Glass Fiber Cone | Neodymium Tweeter | Pair\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSoundQubed HDX Series 5.25\" 2-Way Coaxial\u003c\/strong\u003e is a high-performance compact coaxial speaker built for enthusiasts who want a direct-fit, stock-location upgrade that keeps up with the rest of the HDX lineup. Featuring a \u003cstrong\u003eglass fiber cone\u003c\/strong\u003e, \u003cstrong\u003erubber surround\u003c\/strong\u003e, a \u003cstrong\u003e310g barium ferrite magnet\u003c\/strong\u003e, and an integrated \u003cstrong\u003eneodymium PEI dome tweeter\u003c\/strong\u003e, the HDX 5.25\" delivers \u003cstrong\u003e60W RMS \/ 180W max\u003c\/strong\u003e at \u003cstrong\u003e89 dB sensitivity\u003c\/strong\u003e with a frequency response of \u003cstrong\u003e40 Hz–20 kHz\u003c\/strong\u003e. Designed to fit standard 5.25\" factory mounting locations with confidence, it’s the clean, high-performance upgrade your front stage deserves. Sold as a pair with grills included.\u003c\/p\u003e\n\u003cp\u003eThe woofer features a \u003cstrong\u003e1\" \/ 25.5mm KSV voice coil former\u003c\/strong\u003e wound with \u003cstrong\u003eEISV winding material\u003c\/strong\u003e, a \u003cstrong\u003eglass fiber cone\u003c\/strong\u003e with a \u003cstrong\u003erubber surround\u003c\/strong\u003e, and a \u003cstrong\u003eblack matte steel basket\u003c\/strong\u003e. The integrated \u003cstrong\u003e1\" \/ 25.4mm neodymium tweeter\u003c\/strong\u003e uses a \u003cstrong\u003ePEI diaphragm\u003c\/strong\u003e and \u003cstrong\u003eEISVM winding\u003c\/strong\u003e on a KSV former for smooth, detailed high-frequency reproduction. With a recommended hi-pass crossover at \u003cstrong\u003e60 Hz\u003c\/strong\u003e, the HDX 5.25\" works seamlessly with your amplifier’s built-in crossover — no separate passive crossover required.\u003c\/p\u003e\n\u003cp\u003eThe T\/S parameters confirm a well-engineered compact driver: \u003cstrong\u003eFs of 77 Hz\u003c\/strong\u003e, \u003cstrong\u003eXmax of 2.3mm\u003c\/strong\u003e, \u003cstrong\u003eVas of 4.86L\u003c\/strong\u003e, and a \u003cstrong\u003econe area (Sd) of 86.5cm²\u003c\/strong\u003e. Whether you’re filling dash locations, door panels, or rear deck positions, the HDX 5.25\" delivers the output and clarity to complete your HDX system build.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose the SoundQubed HDX Series 5.25\" Coaxial?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e60W RMS \/ 180W MAX @ 4Ω\u003c\/strong\u003e — Handles real amplifier power for a 5.25\" coaxial — pairs well with any SoundQubed 4-channel amplifier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e89 dB Sensitivity (1W\/1m)\u003c\/strong\u003e — Efficient enough for head unit power, but designed to shine with proper amplification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass Fiber Cone + Rubber Surround\u003c\/strong\u003e — Stiff, lightweight cone material delivers accurate midrange with controlled resonance and long-term durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e310g Barium Ferrite Magnet\u003c\/strong\u003e — Solid motor for a 5.25\" coaxial — drives the cone with authority for clean, punchy midrange output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeodymium Tweeter (PEI Diaphragm)\u003c\/strong\u003e — Smooth, detailed high-frequency reproduction integrated directly into the coaxial design — no separate tweeter install required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40 Hz–20 kHz Frequency Response\u003c\/strong\u003e — Wide range from upper bass through extended treble — a complete solution in a compact 5.25\" footprint.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect-Fit 5.25\" Footprint\u003c\/strong\u003e — 4.45\" \/ 113mm baffle cutout fits most OEM 5.25\" dash, door, and rear deck locations without modification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrills Included\u003c\/strong\u003e — Complete install-ready package for a clean, finished look.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Pairing Recommendations\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAmplifier Pairing:\u003c\/strong\u003e The HDX 5.25\" handles \u003cstrong\u003e60W RMS \/ 180W max at 4Ω\u003c\/strong\u003e. It pairs perfectly with any SoundQubed 4-channel amplifier — the S4-100 (100W x4) or Q4-150ABv2 (150W x4) are ideal matches. Set your amplifier’s HPF at 60–80 Hz to protect the driver and maximize output.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSystem Integration:\u003c\/strong\u003e The HDX 5.25\" is engineered to pair with HDX subwoofers for a coordinated, full-range system within the same lineup. Use them in dash or door locations (HPF at 60–80 Hz) alongside a dedicated SoundQubed monoblock for a complete, balanced build.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMounting:\u003c\/strong\u003e The HDX 5.25\" requires a \u003cstrong\u003e4.45\" \/ 113mm baffle cutout\u003c\/strong\u003e and \u003cstrong\u003e2.3\" \/ 58.5mm mounting depth\u003c\/strong\u003e. Without grill, overall diameter is 5.08\" \/ 129mm. With grill: 6.5\" \/ 165mm. Verify your mounting location depth before purchasing\u003c\/p\u003e\n\u003ch2\u003eFull Specifications\u003c\/h2\u003e\n\u003ch3\u003eGeneral\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background-color: #222; color: #fff; padding: 8px; text-align: left;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background-color: #222; color: #fff; padding: 8px; text-align: left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eNominal Diameter\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e5.25\" \/ 133mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eNominal Impedance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e4 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eRMS Power Handling\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e60W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMAX Power Handling\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e180W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eSensitivity (1W\/1m)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e89 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e40 Hz – 20 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eRecommended Hi-Pass Crossover\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eNumber of Ways\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2-Way\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eSold In\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003ePair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eGrill Included\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWoofer Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background-color: #222; color: #fff; padding: 8px; text-align: left;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background-color: #222; color: #fff; padding: 8px; text-align: left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eVoice Coil Diameter\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e1\" \/ 25.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eVoice Coil Former Material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eKSV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eWinding Material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eEISV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eCone Material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eGlass Fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eSurround Material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eRubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eBasket Material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eBasket Color\/Finish\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eBlack Matte\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMagnet Material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eBarium Ferrite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMagnet Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e310g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eThiele \u0026amp; Small Parameters\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background-color: #222; color: #fff; padding: 8px; text-align: left;\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"background-color: #222; color: #fff; padding: 8px; text-align: left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eEquivalent Volume (Vas)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e4.86L \/ 0.17ft³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eExcursion One Way (Xmax)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eFree Air Resonance (Fs)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e77 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMechanical Factor (Qms)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e8.39\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eElectrical Factor (Qes)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e0.87\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eTotal Factor (Qts)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e0.79\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMechanical Mass (Mms)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e9.93g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMechanical Compliance (Cms)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e457mm\/N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eBL Factor (BL)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e4.321\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eVoice Coil Inductance (Le)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e0.216mH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eCone Area (Sd)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e86.5cm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eDC Resistance (Re)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e3.5 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMechanical Mass w\/o Air (Mmd)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e9g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eTweeter Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background-color: #222; color: #fff; padding: 8px; text-align: left;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background-color: #222; color: #fff; padding: 8px; text-align: left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eNominal Diameter\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e1\" \/ 25.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eVoice Coil Diameter\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e0.8\" \/ 20.4mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eVC Former Material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eKSV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eWinding Material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eEISVM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eDiaphragm Material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003ePEI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMagnet Material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eNeodymium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMagnet Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e8.5g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eSpeaker Measurements\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"background-color: #222; color: #fff; padding: 8px; text-align: left;\"\u003eDimension\u003c\/th\u003e\n\u003cth style=\"background-color: #222; color: #fff; padding: 8px; text-align: left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eOverall Diameter (With Grill)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e6.5\" \/ 165mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eOverall Depth (With Grill)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2.97\" \/ 75.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eOverall Diameter (Without Grill)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e5.08\" \/ 129mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eOverall Depth (Without Grill)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2.77\" \/ 70.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eFront Mount Baffle Cutout\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e4.45\" \/ 113mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMounting Depth\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e2.3\" \/ 58.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMotor Diameter\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e3.34\" \/ 85mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What amplifier should I pair with the HDX 5.25\" coaxial?\u003c\/strong\u003e\u003cbr\u003eA: The HDX 5.25\" handles 60W RMS \/ 180W max at 4Ω. The SoundQubed S4-100 (100W x4) or Q4-150ABv2 (150W x4) are perfect matches. Set your HPF at 60–80 Hz for best results and driver protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need a separate tweeter with the HDX 5.25\"?\u003c\/strong\u003e\u003cbr\u003eA: No — the HDX 5.25\" is a \u003cstrong\u003e2-way coaxial\u003c\/strong\u003e speaker with an integrated \u003cstrong\u003e1\" neodymium PEI tweeter\u003c\/strong\u003e built into the woofer. No separate tweeter or passive crossover is required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will the HDX 5.25\" fit my factory locations?\u003c\/strong\u003e\u003cbr\u003eA: The HDX 5.25\" requires a \u003cstrong\u003e4.45\" \/ 113mm baffle cutout\u003c\/strong\u003e and \u003cstrong\u003e2.3\" \/ 58.5mm mounting depth\u003c\/strong\u003e. It fits most OEM 5.25\" dash, door, and rear deck locations. Always verify your mounting location depth before purchasing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these sold as a pair or individually?\u003c\/strong\u003e\u003cbr\u003eA: The HDX 5.25\" coaxial is sold as a \u003cstrong\u003epair\u003c\/strong\u003e — two speakers and two grills are included.\u003c\/p\u003e","brand":"SoundQubed","offers":[{"title":"Default Title","offer_id":49849730695396,"sku":null,"price":89.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/2522\/9028\/files\/2__46494.webp?v=1789257232","url":"https:\/\/www.12voltoutlet.com\/products\/soundqubed-hdx-series-5-25-coaxial-2-way-speakers-pair","provider":"12 Volt Outlet","version":"1.0","type":"link"}