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Diamond Audio DMDX 6x8" Concentric Coaxial Speakers The Diamond Audio DMDX 6x8" Concentric Coaxial Speakers are engineered to deliver high-fidelity sound in an affordable, OEM-upgrade-friendly platform. Designed for drivers who want more clarity and output than factory speakers can provide, the DMDX series balances clean power handling, full-range response, and efficient operation in a direct-fit 6x8-inch format. With a concentric coaxial design and carefully matched performance specifications, these speakers provide detailed highs, articulate midrange, and controlled low-frequency response—making them an ideal everyday upgrade. Performance Highlights Power Handling Rated at 50 watts RMS with 150 watts maximum power handling for reliable daily performance and dynamic peaks. Full-Range Frequency Response 60Hz–20kHz frequency range supports balanced sound reproduction across lows, mids, and highs. Efficient Output 85dB sensitivity (1W/1M) allows strong performance when powered by factory head units or aftermarket amplifiers. System Compatibility 4-ohm nominal impedance ensures compatibility with standard automotive audio systems. Installation & Fitment Built in a 6x8-inch (152x203mm) format, the DMDX is designed for direct replacement in compatible factory speaker locations. Its moderate mounting depth and precise cut-out dimensions help simplify installation in a wide range of vehicles. Mounting Depth 2.28" (58mm) Cut-Out Dimensions 7.09" x 5" (180 x 127mm) Overall Dimensions 7.6" x 5.51" (193 x 140mm) Overall Height 2.65" (67.2mm) Specifications Nominal Diameter 6x8" (152 x 203mm) Power Handling (RMS) 50 Watts Power Handling (Max) 150 Watts Frequency Response 60Hz – 20kHz Sensitivity (1W/1M) 85dB Nominal Impedance 4 Ohms Free-Air Resonance (Fs) 95Hz Mounting Depth 2.28" (58mm) Cut-Out Dimensions 7.09" x 5" (180 x 127mm) Overall Dimensions 7.6" x 5.51" (193 x 140mm) Overall Height 2.65" (67.2mm)
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The specs above are the fastest way to confirm a part is right before checkout — a size or power rating just outside your factory setup usually means an adapter or a different SKU, not a return later. If you are not sure which spec matters for your vehicle, the fit tool at the top of the page narrows the catalog to parts already confirmed for your year, make, and model.
