{"product_id":"dc-audio-m4-8-subwoofer","title":"DC Audio M4 8\" Subwoofer","description":"\u003cdiv\u003e\n\u003cp\u003eDC Audio M4 8\" Subwoofer is a high-power 8-inch woofer engineered for deep bass in demanding car installs, available in D2 and D4 configurations with 800W RMS \/ 1600W peak. Its tall roll stitched surround, oversized spiders, and gap-cooled 2.5\" copper voice coil deliver linear performance under high power.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePower handling\u003c\/b\u003e: 800W RMS \/ 1600W peak. In real-world use this means the driver can sustain substantial continuous and peak bass energy without thermal compression, provided it’s paired with a suitable amplifier and enclosure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVoice coil\u003c\/b\u003e: DVC 2.5\" Copper voice coil. A larger coil surface area improves heat transfer and allows higher power handling for sustained low-frequency excursion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGap cooled design\u003c\/b\u003e: Enables the 2.5\" voice coil to thermally take more power than the M3. This translates to greater thermal headroom during demanding musical peaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCone and surround\u003c\/b\u003e: Extremely rigid non-pressed paper cone assembly; High Roll Stitched Multilayered reinforced polymer foam surround. Together they improve stiffness and excursion control for cleaner bass at high output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFrame and motor\u003c\/b\u003e: Custom Cast aluminum black frame; FEA analyzed and optimized motor assembly – Fully CNC machined. This combination yields a robust, consistent motor structure with precise tolerances for linear motion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSpiders and lead wires\u003c\/b\u003e: Bolted down \u0026amp; spaced Linear roll spiders; Sewn flat heavy duty tinsel lead wire. These features help keep the moving assembly stable and reduce distortion under heavy duty use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGasket and boot\u003c\/b\u003e: Rubber mounting gasket and custom tooled motor boot. Provides a solid seal and reliable mounting interface in a variety of enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImpedance options\u003c\/b\u003e: DVC 2.5” copper voice coil with D2 or D4 options. Allows integration with different amplifier loads and wiring configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDimensions and data\u003c\/b\u003e: Mounting Depth 7.0\" (D2\/D4); Mounting Hole Diameter 7.5\"; Outside Driver Diameter 8.75\"; VC Diameter 2.5\"; Displacement 0.15 ft³; Xmax 19 mm; Sd 188.69 cm²; Re 4.0 Ohm (D2) \/ 8.0 Ohm (D4); Vas 1.728 Ltr (D2) \/ 1.790 Ltr (D4); Fs 44.5 Hz (D2) \/ 47.4 Hz (D4); Qms 4.54 (D2) \/ 4.81 (D4); Qes 0.614 (D2) \/ 0.700 (D4); Qts 0.538 (D2) \/ 0.652 (D4); Ref SPL @1W 78.4 dB (D2) \/ 78.0 dB (D4); Ported box suggestion 0.85 ft³.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBenefits: In a high-power system, the M4 8 excels in a compact enclosure thanks to its 0.15 ft³ displacement and 19 mm Xmax, delivering strong low-end extension with controlled cone motion. The 2.5\" copper voice coil and gap-cooled design provide thermal resilience for demanding music and loud listening sessions. The dual impedance options (D2\/D4) let you tailor the load to your amplifier and wiring, while the rigid cone, reinforced surround, and CNC-machined motor assembly ensure consistent performance with minimal distortion. With a 7.0\" mounting depth and a 0.85 ft³ ported box suggestion, it fits a range of installations where deep bass and high headroom are priorities.\u003c\/p\u003e \u003cbr\u003e \u003ctable class=\"tg\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"tg-1xy1\"\u003eM4 8\" Subwoofer\u003c\/th\u003e\n\u003cth class=\"tg-1xy1\"\u003eD2\u003c\/th\u003e\n\u003cth class=\"tg-mow8\"\u003eD4\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eMounting Depth\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e7.0\"\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e7.0\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eMounting Hole Diameter\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e7.5\"\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e7.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eOutside Driver Diameter\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e8.75\"\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e8.75\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eVC Diameter\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e2.5\"\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e2.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eDisplacement\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e.15 ft³\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e.15 ft³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003ePower Handling rms\/peak\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e800\/1600\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e800\/1600\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eOhm Options\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003ed2\/d4\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003ed2\/d4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eSd\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e188.69 cm²\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e188.69 cm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eVas\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e1.728 Ltr\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e1.790 Ltr L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eCms\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e34.184 uM\/N\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e35.405 uM\/N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eMms\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e248.83g\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e202.53 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eFs\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e44.5 Hz\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e47.4 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eBl\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e20.72 N\/A\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e19.68 N\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eRe\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e4.0 Ohm\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e8.0 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eLe\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e0.00 mH\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e0.00 mH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eQms\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e4.54\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e4.81\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eQes\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e0.614\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e0.700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eQts\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e0.538\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e0.652\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eXmax\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e19mm\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003e19mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eRef SPL @1 watt\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e78.4 db\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e78.0 db\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-sftl\"\u003eSuggest Sealed Box\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003eN\/A ft³\u003c\/td\u003e\n\u003ctd class=\"tg-sftl\"\u003eN\/A ft³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-1xy1\"\u003eSuggested Ported Box\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e0.85 ft³\u003c\/td\u003e\n\u003ctd class=\"tg-1xy1\"\u003e0.85 ft³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"DC Audio","offers":[{"title":"Dual 2 Ohm","offer_id":49850214187236,"sku":null,"price":249.99,"currency_code":"USD","in_stock":true},{"title":"Dual 4 Ohm","offer_id":49850214220004,"sku":null,"price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/2522\/9028\/files\/eqfeq.png?v=1789260639","url":"https:\/\/www.12voltoutlet.com\/products\/dc-audio-m4-8-subwoofer","provider":"12 Volt Outlet","version":"1.0","type":"link"}