The Sundown Audio SA-Series SA-18 v.2 18" 1000W Subwoofer is a sleek black audio powerhouse, featuring a circular silver top and a robust metal frame. Engineered for SPL competition-grade performance, it showcases visible wiring terminals on the side, all highlighted against a crisp white background.

The Sundown Audio SA-Series SA-18 v.2 18" Subwoofer features a robust, ribbed cone and a sturdy metal frame, ideal for SPL competition-grade performance. Delivering an impressive 1000-watts RMS power, its sleek black design is subtly branded with the Sundown Audio name embossed on the base, reflecting elegantly on a glossy surface.

Close-up of the internal components of a Sundown Audio SA-Series SA-18 v.2 18" 1000W Subwoofer, showcasing braided wires connected to metal terminals and an intricate black diaphragm. The SPL competition-grade terminals are clearly marked with positive and negative symbols to ensure optimal performance.

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Sundown Audio SA-Series SA-18 v.2 18" 1000W Subwoofer

Name: Sundown Audio SA-Series SA-18 v.2 18" 1000W Subwoofer
Availability: InStock

Sundown AudioSKU: SW-SAV218D4

Impedance: D4

Variant

Price:

$499.99

Stock:

Available

Quantity:

{"id":7506866667613,"title":"Sundown Audio SA-Series SA-18 v.2 18\" 1000W Subwoofer","handle":"sundown-audio-sa-series-v-2-18-1000w-car-audio-subwoofer-sub","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eSA v.2 Series DVC Subwoofer\u003c\/h3\u003e\n\u003cdiv class=\"uk-panel uk-margin\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Sundown SA series has been our most popular line since its original introduction in 2009. What better way to create a new version 2 than to upgrade, literally, every single part of the woofer? We started with a larger, more powerful motor to drive the larger 2.75” coil and stronger soft parts – this maintains the perfect balance of the original SA series while also increasing the power handling to 1000-watts RMS.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWhen designing the SA v.2 series we started out with an FEA optimized motor \u0026amp; coil design capable of 19mm of one-way linear excursion by 70% BL and just over 35mm of x-mech. This motor \u0026amp; coil setup was then mated up to an extremely robust double-layer spider with fully tied-on \u0026amp; doubled-up “XL” tinsel leads (84-Strands of Conductor per lead), an SPL competition grade paper cone, and a strong foam surround. The motor also features a large magnet ID shorting ring (faraday ring) to reduce distortion causes by inductance \u0026amp; inductance variation over stroke.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWe further improved the voice coil cooling system from the original SA series. This system allows our 2.75″ coil to match and exceed the thermal performance of many competing 3″ coil drivers on the market without requiring the usage of a much heavier voice coil than required for the design. The key to the SA series is, in fact, the perfect balance of motors force to mass. We have maintained that delicate balance in the v.2 through extensive testing and optimizations.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWe then borrowed the new frame, aluminum surround bolt-on clamps, and aluminum vent rings that we tooled for the U-Series to further bring the SA to new heights of performance and reliability. At this point you can think of it as a little brother to the U Series.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis 18 inch model features a larger motor than the SA-10\/12\/15 v2 at a full 205mm diameter and a 60mm magnet stack height. The top plate is also thicker in order to more effectively move the higher mass 18″ soft parts. It has a large 234mm diameter spider pack for very high mechanical stroke capacity. It utilizes the same 2.75″ coil as the other SA v.2 series for a 1000-watt RMS power rating.\u003c\/p\u003e\n\u003cdiv class=\"cus-flex\"\u003e\n\u003cdiv class=\"box-1\"\u003e\n\u003ch3 class=\"el-title uk-text-danger uk-margin-top uk-margin-remove-bottom\"\u003eFeatures (SA-10\/12\/15\/18 v.2)\u003c\/h3\u003e\n\u003cdiv class=\"el-content uk-panel uk-margin-top\"\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eXmax\u003c\/strong\u003e = 19mm one-way by 70% BL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRMS Power\u003c\/strong\u003e = 1000-watts\u003c\/li\u003e\n\u003cli\u003eVented magnetic gap\u003c\/li\u003e\n\u003cli\u003eOptimized high-velocity pole vent\u003c\/li\u003e\n\u003cli\u003eInnovative high-velocity vented frame spacer ring\u003c\/li\u003e\n\u003cli\u003eBlack Aluminum 2.75” voice coil former for superior heat dissipation\u003c\/li\u003e\n\u003cli\u003eHigh Temperature copper voice coil wire\u003c\/li\u003e\n\u003cli\u003eLarge aluminum faraday ring (Magnet ID)\u003c\/li\u003e\n\u003cli\u003eSpring Loaded Terminals\u003c\/li\u003e\n\u003cli\u003eStitched-On Double “XL” Tinsel Leads to prevent fatigue and failure\u003c\/li\u003e\n\u003cli\u003eHigh strength cast aluminum frame\u003c\/li\u003e\n\u003cli\u003eOptimized for small ported, sealed, \u0026amp; band-pass enclosure\u003cbr\u003e\u003cbr\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eList of upgrades compared to the v1 SA series (Rev.1,2,3):\u003c\/strong\u003e\u003c\/p\u003e\n\u003col type=\"1\" start=\"1\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMagnet outer diameter increased from 180mm to 190mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMagnet slugs increased from 25mm to 27mm in height (total 4mm more height)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMotor structure fully bolted together with 3x M6 bolts (eliminates the possibility of motor shifting)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTop-Plate “Slits” implemented as with the X and Z series. Increased cooling \u0026amp; reduced distortion.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eImproved gap venting — more \/ flared gap vents.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eImprove pole-vent design — smoothly flared on both sides.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eCoil increased from 63.5mm (2.5″) to 70mm (2.75″) in diameter. Higher thermal capacity.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eNew “U series” style cast-aluminum frame for taller cones (more x-mech both top-side from cone to spider and bottom from spider to top plate)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAluminum cast gasket to bolt-on surround.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAluminum cast vent ring to enhance thermal transfer from motor to the frame.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eStandard with double “XL” leads and “bolted-on” spider\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eLarger and thicker surround (same tooling as U series).\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eStrongest paper cones we have ever produced… new two-piece mold technique.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e“Large Flange” dust cap just like our larger woofers. Essentially eliminates dust-cap glue failure.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eLarger spider diameter on the 12\/15″ models (the 10″ retains the same 188mm spider)… 12″ up to ~200mm and 15″ up to ~210mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eImproved spider material for longer life.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box-2\"\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"uk-margin\"\u003e\n\u003ctable class=\"uk-table uk-table-striped uk-table-small\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"uk-text-nowrap\"\u003eT\/S SPECS\u003c\/th\u003e\n\u003cth class=\"uk-text-nowrap\"\u003e\u003cstrong\u003eSAV2 18″ D2\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth class=\"uk-text-nowrap\"\u003e\u003cstrong\u003eSAV2 18″ D4\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRE (Ohms)\u003c\/td\u003e\n\u003ctd\u003e3.97\u003c\/td\u003e\n\u003ctd\u003e6.06\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFS (Hz)\u003c\/td\u003e\n\u003ctd\u003e29.051\u003c\/td\u003e\n\u003ctd\u003e31.868\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVAS (L)\u003c\/td\u003e\n\u003ctd\u003e114.234\u003c\/td\u003e\n\u003ctd\u003e106.964\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQes\u003c\/td\u003e\n\u003ctd\u003e0.424\u003c\/td\u003e\n\u003ctd\u003e0.458\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQms\u003c\/td\u003e\n\u003ctd\u003e3.052\u003c\/td\u003e\n\u003ctd\u003e2.853\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQts\u003c\/td\u003e\n\u003ctd\u003e0.372\u003c\/td\u003e\n\u003ctd\u003e0.395\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLe (mH)\u003c\/td\u003e\n\u003ctd\u003e3.6326\u003c\/td\u003e\n\u003ctd\u003e4.7903\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBL (NA)\u003c\/td\u003e\n\u003ctd\u003e32.523\u003c\/td\u003e\n\u003ctd\u003e38.159\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMms (Grams)\u003c\/td\u003e\n\u003ctd\u003e619.174\u003c\/td\u003e\n\u003ctd\u003e549.519\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCms (uM\/N)\u003c\/td\u003e\n\u003ctd\u003e48.474\u003c\/td\u003e\n\u003ctd\u003e45.389\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSens (dB @ 1w\/1m)\u003c\/td\u003e\n\u003ctd\u003e90.1\u003c\/td\u003e\n\u003ctd\u003e90.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box-3\"\u003e\n\u003ch3\u003eEnclosure Specifications\u003c\/h3\u003e\n\u003ctable class=\"uk-table uk-table-striped uk-table-small\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eSealed Enclosure\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e2.0 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003ePorted Enclosure\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e3.0 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRecommended Tuning\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e35Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRecommended Port Area\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e44 sq in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eDisplacement\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eDepth\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e8.65\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eOutside Diameter\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e15.59″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eCut-Out\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e14.01″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003ePhysical Dimensions\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-18v2.pdf?v=1688790885\"\u003eDownload\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box-4\"\u003e\n\u003ch3\u003eEnclosure Designs\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-Information.jpg?v=1688790886\" alt=\"An image illustrating design details and specifications for a Bassahaulic Designs speaker enclosure, customized for the Sundown Audio SA-Series v.2 18\u0026quot; Subwoofer. The image features dimensions, port size, and tuning frequency, with a reminder to verify measurements against 2D renderings to ensure suitability for accommodating the subwoofer's 1000-watt RMS power capacity.\"\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-0.jpg?v=1688790887\" alt='3D model of a wooden speaker box designed for the Sundown Audio SA-Series v.2 18\" 1000W Subwoofer, featuring a large circular cutout on top. It includes a 1000-watts RMS capacity and has a rectangular, vented opening on one side. The simple design highlights detailed wood grain texture with the Sundown Audio logo in the bottom left corner.'\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-1.jpg?v=1688790887\" alt=\"The Sundown Audio SA-Series v.2 18\u0026quot; 1000W Subwoofer enclosure is a precisely crafted rectangular wooden box featuring a circular cutout on top and dimensions of 20 height, 36 width, and 25 depth. Designed to seamlessly accommodate the subwoofer's power handling capacity of up to 1000-watts RMS, it also showcases a logo in the bottom left corner.\"\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-2.jpg?v=1688790887\" alt='A 3D model of a wooden box designed specifically for the Sundown Audio SA-Series v.2 18\" 1000W Subwoofer is showcased, featuring precise dimensions marked in inches: 36 width, 14 1\/2 height, and 20 depth. This subwoofer-ready design includes a circular cutout on the top surface to accommodate up to 1000 watts RMS.'\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-3.jpg?v=1688790887\" alt=\"Illustration of a square wooden panel featuring a large circular cutout in the center, ideal for incorporating the Sundown Audio SA-Series v.2 subwoofer. Blue measurements reveal a 12-inch diameter for the cutout. A small Sundown Audio logo is placed in the bottom left corner, enhancing the design's compatibility with 1000 watts RMS.\"\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-4.jpg?v=1688790887\" alt='A technical drawing of a rectangular board for the Sundown Audio SA-Series v.2 18\" subwoofer features various dimensions. The board measures 39 inches wide and 36 inches tall, with an inset portion on the right side. It shows segment measurements and includes a Sundown Audio logo in the bottom left corner, designed to accommodate a 1000-watt RMS capacity.'\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-Cutsheet-1.png?v=1688790886\" alt='Diagram in orange and blue showing the dimensions of a Sundown Audio SA-Series v.2 box. Orange sections include: Back (14 1\/2 x 31 1\/2), two Sides (each 14 1\/2 x 28), and Top \u0026amp; Bottom (33 x 28). The blue section represents Port Wall #2, designed to accommodate the Sundown Audio SA-Series v.2 18\" Subwoofer with up to 1000 watts of power.'\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-Cutsheet-2.png?v=1688790885\" alt='A diagram of a rectangular structure features two labeled sections: the Port Wall #1 on the left, measured at 21 inches high and 14.5 inches wide, and the Front positioned at the bottom, which is 26 inches wide and 14.5 inches high. The remaining area is a large blue section, specifically designed to house a Sundown Audio SA-Series v.2 18\" Subwoofer for optimal performance of 1000 watts RMS.'\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single.zip?v=1688790887\"\u003e.Zip File\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","published_at":"2024-05-13T15:50:19-04:00","created_at":"2024-05-13T15:50:29-04:00","vendor":"Sundown Audio","type":"18\" Subwoofer","tags":["1000W","18 inch","18\"","18\" Subwoofer","alt text generated","D2","D4","SA-Series","STRY","Sub","Subs","Subwoofer","Subwoofers","Sundown","Sundown Audio"],"price":49999,"price_min":49999,"price_max":49999,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":42170866991197,"title":"D4","option1":"D4","option2":null,"option3":null,"sku":"SW-SAV218D4","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Sundown Audio SA-Series SA-18 v.2 18\" 1000W Subwoofer - D4","public_title":"D4","options":["D4"],"price":49999,"weight":19051,"compare_at_price":null,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":42170867023965,"title":"D2","option1":"D2","option2":null,"option3":null,"sku":"SW-SAV218D2","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Sundown Audio SA-Series SA-18 v.2 18\" 1000W Subwoofer - D2","public_title":"D2","options":["D2"],"price":49999,"weight":19051,"compare_at_price":null,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-617088.png?v=1715629829","\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-206537.png?v=1715629829","\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-859319.png?v=1715629829","\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-828315.png?v=1715629829","\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-759719.png?v=1715629829","\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-350523.png?v=1715629829"],"featured_image":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-617088.png?v=1715629829","options":["Impedance"],"media":[{"alt":"Two large Sundown Audio SA-Series SA-18 v.2 18\" subwoofers in black, featuring reflective surfaces and prominently displayed brand logos, are positioned side by side. One subwoofer is angled to reveal its speaker cone, while the other showcases its back with a sleek metal casing. These SPL competition grade marvels deliver a powerful sound performance at 1000-watts RMS.","id":27201385955421,"position":1,"preview_image":{"aspect_ratio":1.0,"height":580,"width":580,"src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-617088.png?v=1715629829"},"aspect_ratio":1.0,"height":580,"media_type":"image","src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-617088.png?v=1715629829","width":580},{"alt":"An 18-inch SA-18 v.2 Subwoofer from Sundown Audio, featuring a black and gray design with the brand's name visible on the cone, rests against a simple light gray background, highlighting its circular shape and intricate contours. This SPL competition-grade subwoofer delivers an impressive 1000 watts RMS power for outstanding performance.","id":27201385988189,"position":2,"preview_image":{"aspect_ratio":1.0,"height":580,"width":580,"src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-206537.png?v=1715629829"},"aspect_ratio":1.0,"height":580,"media_type":"image","src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-206537.png?v=1715629829","width":580},{"alt":"The Sundown Audio SA-Series SA-18 v.2 18\" 1000W Subwoofer is a sleek black audio powerhouse, featuring a circular silver top and a robust metal frame. Engineered for SPL competition-grade performance, it showcases visible wiring terminals on the side, all highlighted against a crisp white background.","id":27201386020957,"position":3,"preview_image":{"aspect_ratio":1.0,"height":580,"width":580,"src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-859319.png?v=1715629829"},"aspect_ratio":1.0,"height":580,"media_type":"image","src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-859319.png?v=1715629829","width":580},{"alt":"The Sundown Audio SA-Series SA-18 v.2 18\" Subwoofer features a robust, ribbed cone and a sturdy metal frame, ideal for SPL competition-grade performance. Delivering an impressive 1000-watts RMS power, its sleek black design is subtly branded with the Sundown Audio name embossed on the base, reflecting elegantly on a glossy surface.","id":27201386053725,"position":4,"preview_image":{"aspect_ratio":1.0,"height":580,"width":580,"src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-828315.png?v=1715629829"},"aspect_ratio":1.0,"height":580,"media_type":"image","src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-828315.png?v=1715629829","width":580},{"alt":"An 18-inch Sundown Audio SA-Series SA-18 v.2 Subwoofer in black, featuring a textured cone and a central dome with the Sundown Audio logo. This SPL competition grade speaker's circular design includes detailed screws around the edge and delivers an impressive 1000 watts RMS.","id":27201386086493,"position":5,"preview_image":{"aspect_ratio":1.0,"height":580,"width":580,"src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-759719.png?v=1715629829"},"aspect_ratio":1.0,"height":580,"media_type":"image","src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-759719.png?v=1715629829","width":580},{"alt":"Close-up of the internal components of a Sundown Audio SA-Series SA-18 v.2 18\" 1000W Subwoofer, showcasing braided wires connected to metal terminals and an intricate black diaphragm. The SPL competition-grade terminals are clearly marked with positive and negative symbols to ensure optimal performance.","id":27201386119261,"position":6,"preview_image":{"aspect_ratio":1.0,"height":580,"width":580,"src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-350523.png?v=1715629829"},"aspect_ratio":1.0,"height":580,"media_type":"image","src":"\/\/sparkedinnovations.com\/cdn\/shop\/files\/sa-series-v2-18-1000w-subwoofer-350523.png?v=1715629829","width":580}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eSA v.2 Series DVC Subwoofer\u003c\/h3\u003e\n\u003cdiv class=\"uk-panel uk-margin\" data-mce-fragment=\"1\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe Sundown SA series has been our most popular line since its original introduction in 2009. What better way to create a new version 2 than to upgrade, literally, every single part of the woofer? We started with a larger, more powerful motor to drive the larger 2.75” coil and stronger soft parts – this maintains the perfect balance of the original SA series while also increasing the power handling to 1000-watts RMS.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWhen designing the SA v.2 series we started out with an FEA optimized motor \u0026amp; coil design capable of 19mm of one-way linear excursion by 70% BL and just over 35mm of x-mech. This motor \u0026amp; coil setup was then mated up to an extremely robust double-layer spider with fully tied-on \u0026amp; doubled-up “XL” tinsel leads (84-Strands of Conductor per lead), an SPL competition grade paper cone, and a strong foam surround. The motor also features a large magnet ID shorting ring (faraday ring) to reduce distortion causes by inductance \u0026amp; inductance variation over stroke.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWe further improved the voice coil cooling system from the original SA series. This system allows our 2.75″ coil to match and exceed the thermal performance of many competing 3″ coil drivers on the market without requiring the usage of a much heavier voice coil than required for the design. The key to the SA series is, in fact, the perfect balance of motors force to mass. We have maintained that delicate balance in the v.2 through extensive testing and optimizations.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eWe then borrowed the new frame, aluminum surround bolt-on clamps, and aluminum vent rings that we tooled for the U-Series to further bring the SA to new heights of performance and reliability. At this point you can think of it as a little brother to the U Series.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis 18 inch model features a larger motor than the SA-10\/12\/15 v2 at a full 205mm diameter and a 60mm magnet stack height. The top plate is also thicker in order to more effectively move the higher mass 18″ soft parts. It has a large 234mm diameter spider pack for very high mechanical stroke capacity. It utilizes the same 2.75″ coil as the other SA v.2 series for a 1000-watt RMS power rating.\u003c\/p\u003e\n\u003cdiv class=\"cus-flex\"\u003e\n\u003cdiv class=\"box-1\"\u003e\n\u003ch3 class=\"el-title uk-text-danger uk-margin-top uk-margin-remove-bottom\"\u003eFeatures (SA-10\/12\/15\/18 v.2)\u003c\/h3\u003e\n\u003cdiv class=\"el-content uk-panel uk-margin-top\"\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eXmax\u003c\/strong\u003e = 19mm one-way by 70% BL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRMS Power\u003c\/strong\u003e = 1000-watts\u003c\/li\u003e\n\u003cli\u003eVented magnetic gap\u003c\/li\u003e\n\u003cli\u003eOptimized high-velocity pole vent\u003c\/li\u003e\n\u003cli\u003eInnovative high-velocity vented frame spacer ring\u003c\/li\u003e\n\u003cli\u003eBlack Aluminum 2.75” voice coil former for superior heat dissipation\u003c\/li\u003e\n\u003cli\u003eHigh Temperature copper voice coil wire\u003c\/li\u003e\n\u003cli\u003eLarge aluminum faraday ring (Magnet ID)\u003c\/li\u003e\n\u003cli\u003eSpring Loaded Terminals\u003c\/li\u003e\n\u003cli\u003eStitched-On Double “XL” Tinsel Leads to prevent fatigue and failure\u003c\/li\u003e\n\u003cli\u003eHigh strength cast aluminum frame\u003c\/li\u003e\n\u003cli\u003eOptimized for small ported, sealed, \u0026amp; band-pass enclosure\u003cbr\u003e\u003cbr\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eList of upgrades compared to the v1 SA series (Rev.1,2,3):\u003c\/strong\u003e\u003c\/p\u003e\n\u003col type=\"1\" start=\"1\" data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMagnet outer diameter increased from 180mm to 190mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMagnet slugs increased from 25mm to 27mm in height (total 4mm more height)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eMotor structure fully bolted together with 3x M6 bolts (eliminates the possibility of motor shifting)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eTop-Plate “Slits” implemented as with the X and Z series. Increased cooling \u0026amp; reduced distortion.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eImproved gap venting — more \/ flared gap vents.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eImprove pole-vent design — smoothly flared on both sides.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eCoil increased from 63.5mm (2.5″) to 70mm (2.75″) in diameter. Higher thermal capacity.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eNew “U series” style cast-aluminum frame for taller cones (more x-mech both top-side from cone to spider and bottom from spider to top plate)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAluminum cast gasket to bolt-on surround.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eAluminum cast vent ring to enhance thermal transfer from motor to the frame.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eStandard with double “XL” leads and “bolted-on” spider\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eLarger and thicker surround (same tooling as U series).\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eStrongest paper cones we have ever produced… new two-piece mold technique.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e“Large Flange” dust cap just like our larger woofers. Essentially eliminates dust-cap glue failure.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eLarger spider diameter on the 12\/15″ models (the 10″ retains the same 188mm spider)… 12″ up to ~200mm and 15″ up to ~210mm\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eImproved spider material for longer life.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box-2\"\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"uk-margin\"\u003e\n\u003ctable class=\"uk-table uk-table-striped uk-table-small\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"uk-text-nowrap\"\u003eT\/S SPECS\u003c\/th\u003e\n\u003cth class=\"uk-text-nowrap\"\u003e\u003cstrong\u003eSAV2 18″ D2\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth class=\"uk-text-nowrap\"\u003e\u003cstrong\u003eSAV2 18″ D4\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRE (Ohms)\u003c\/td\u003e\n\u003ctd\u003e3.97\u003c\/td\u003e\n\u003ctd\u003e6.06\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFS (Hz)\u003c\/td\u003e\n\u003ctd\u003e29.051\u003c\/td\u003e\n\u003ctd\u003e31.868\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVAS (L)\u003c\/td\u003e\n\u003ctd\u003e114.234\u003c\/td\u003e\n\u003ctd\u003e106.964\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQes\u003c\/td\u003e\n\u003ctd\u003e0.424\u003c\/td\u003e\n\u003ctd\u003e0.458\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQms\u003c\/td\u003e\n\u003ctd\u003e3.052\u003c\/td\u003e\n\u003ctd\u003e2.853\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQts\u003c\/td\u003e\n\u003ctd\u003e0.372\u003c\/td\u003e\n\u003ctd\u003e0.395\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLe (mH)\u003c\/td\u003e\n\u003ctd\u003e3.6326\u003c\/td\u003e\n\u003ctd\u003e4.7903\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBL (NA)\u003c\/td\u003e\n\u003ctd\u003e32.523\u003c\/td\u003e\n\u003ctd\u003e38.159\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMms (Grams)\u003c\/td\u003e\n\u003ctd\u003e619.174\u003c\/td\u003e\n\u003ctd\u003e549.519\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCms (uM\/N)\u003c\/td\u003e\n\u003ctd\u003e48.474\u003c\/td\u003e\n\u003ctd\u003e45.389\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSens (dB @ 1w\/1m)\u003c\/td\u003e\n\u003ctd\u003e90.1\u003c\/td\u003e\n\u003ctd\u003e90.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box-3\"\u003e\n\u003ch3\u003eEnclosure Specifications\u003c\/h3\u003e\n\u003ctable class=\"uk-table uk-table-striped uk-table-small\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eSealed Enclosure\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e2.0 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003ePorted Enclosure\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e3.0 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRecommended Tuning\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e35Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eRecommended Port Area\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e44 sq in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eDisplacement\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eDepth\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e8.65\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eOutside Diameter\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e15.59″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003eCut-Out\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e14.01″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-mce-fragment=\"1\"\u003e\n\u003ctd data-mce-fragment=\"1\"\u003ePhysical Dimensions\u003c\/td\u003e\n\u003ctd data-mce-fragment=\"1\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-18v2.pdf?v=1688790885\"\u003eDownload\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"box-4\"\u003e\n\u003ch3\u003eEnclosure Designs\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-Information.jpg?v=1688790886\" alt=\"An image illustrating design details and specifications for a Bassahaulic Designs speaker enclosure, customized for the Sundown Audio SA-Series v.2 18\u0026quot; Subwoofer. The image features dimensions, port size, and tuning frequency, with a reminder to verify measurements against 2D renderings to ensure suitability for accommodating the subwoofer's 1000-watt RMS power capacity.\"\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-0.jpg?v=1688790887\" alt='3D model of a wooden speaker box designed for the Sundown Audio SA-Series v.2 18\" 1000W Subwoofer, featuring a large circular cutout on top. It includes a 1000-watts RMS capacity and has a rectangular, vented opening on one side. The simple design highlights detailed wood grain texture with the Sundown Audio logo in the bottom left corner.'\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-1.jpg?v=1688790887\" alt=\"The Sundown Audio SA-Series v.2 18\u0026quot; 1000W Subwoofer enclosure is a precisely crafted rectangular wooden box featuring a circular cutout on top and dimensions of 20 height, 36 width, and 25 depth. Designed to seamlessly accommodate the subwoofer's power handling capacity of up to 1000-watts RMS, it also showcases a logo in the bottom left corner.\"\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-2.jpg?v=1688790887\" alt='A 3D model of a wooden box designed specifically for the Sundown Audio SA-Series v.2 18\" 1000W Subwoofer is showcased, featuring precise dimensions marked in inches: 36 width, 14 1\/2 height, and 20 depth. This subwoofer-ready design includes a circular cutout on the top surface to accommodate up to 1000 watts RMS.'\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-3.jpg?v=1688790887\" alt=\"Illustration of a square wooden panel featuring a large circular cutout in the center, ideal for incorporating the Sundown Audio SA-Series v.2 subwoofer. Blue measurements reveal a 12-inch diameter for the cutout. A small Sundown Audio logo is placed in the bottom left corner, enhancing the design's compatibility with 1000 watts RMS.\"\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-4.jpg?v=1688790887\" alt='A technical drawing of a rectangular board for the Sundown Audio SA-Series v.2 18\" subwoofer features various dimensions. The board measures 39 inches wide and 36 inches tall, with an inset portion on the right side. It shows segment measurements and includes a Sundown Audio logo in the bottom left corner, designed to accommodate a 1000-watt RMS capacity.'\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-Cutsheet-1.png?v=1688790886\" alt='Diagram in orange and blue showing the dimensions of a Sundown Audio SA-Series v.2 box. Orange sections include: Back (14 1\/2 x 31 1\/2), two Sides (each 14 1\/2 x 28), and Top \u0026amp; Bottom (33 x 28). The blue section represents Port Wall #2, designed to accommodate the Sundown Audio SA-Series v.2 18\" Subwoofer with up to 1000 watts of power.'\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single-Cutsheet-2.png?v=1688790885\" alt='A diagram of a rectangular structure features two labeled sections: the Port Wall #1 on the left, measured at 21 inches high and 14.5 inches wide, and the Front positioned at the bottom, which is 26 inches wide and 14.5 inches high. The remaining area is a large blue section, specifically designed to house a Sundown Audio SA-Series v.2 18\" Subwoofer for optimal performance of 1000 watts RMS.'\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0770\/6669\/9062\/files\/SA-SAv2-U-18in-Single.zip?v=1688790887\"\u003e.Zip File\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e"}

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SA v.2 Series DVC Subwoofer

The Sundown SA series has been our most popular line since its original introduction in 2009. What better way to create a new version 2 than to upgrade, literally, every single part of the woofer? We started with a larger, more powerful motor to drive the larger 2.75” coil and stronger soft parts – this maintains the perfect balance of the original SA series while also increasing the power handling to 1000-watts RMS.

When designing the SA v.2 series we started out with an FEA optimized motor & coil design capable of 19mm of one-way linear excursion by 70% BL and just over 35mm of x-mech. This motor & coil setup was then mated up to an extremely robust double-layer spider with fully tied-on & doubled-up “XL” tinsel leads (84-Strands of Conductor per lead), an SPL competition grade paper cone, and a strong foam surround. The motor also features a large magnet ID shorting ring (faraday ring) to reduce distortion causes by inductance & inductance variation over stroke.

We further improved the voice coil cooling system from the original SA series. This system allows our 2.75″ coil to match and exceed the thermal performance of many competing 3″ coil drivers on the market without requiring the usage of a much heavier voice coil than required for the design. The key to the SA series is, in fact, the perfect balance of motors force to mass. We have maintained that delicate balance in the v.2 through extensive testing and optimizations.

We then borrowed the new frame, aluminum surround bolt-on clamps, and aluminum vent rings that we tooled for the U-Series to further bring the SA to new heights of performance and reliability. At this point you can think of it as a little brother to the U Series.

This 18 inch model features a larger motor than the SA-10/12/15 v2 at a full 205mm diameter and a 60mm magnet stack height. The top plate is also thicker in order to more effectively move the higher mass 18″ soft parts. It has a large 234mm diameter spider pack for very high mechanical stroke capacity. It utilizes the same 2.75″ coil as the other SA v.2 series for a 1000-watt RMS power rating.

Features (SA-10/12/15/18 v.2)

Xmax = 19mm one-way by 70% BL
RMS Power = 1000-watts
Vented magnetic gap
Optimized high-velocity pole vent
Innovative high-velocity vented frame spacer ring
Black Aluminum 2.75” voice coil former for superior heat dissipation
High Temperature copper voice coil wire
Large aluminum faraday ring (Magnet ID)
Spring Loaded Terminals
Stitched-On Double “XL” Tinsel Leads to prevent fatigue and failure
High strength cast aluminum frame
Optimized for small ported, sealed, & band-pass enclosure

List of upgrades compared to the v1 SA series (Rev.1,2,3):
1. Magnet outer diameter increased from 180mm to 190mm
2. Magnet slugs increased from 25mm to 27mm in height (total 4mm more height)
3. Motor structure fully bolted together with 3x M6 bolts (eliminates the possibility of motor shifting)
4. Top-Plate “Slits” implemented as with the X and Z series. Increased cooling & reduced distortion.
5. Improved gap venting — more / flared gap vents.
6. Improve pole-vent design — smoothly flared on both sides.
7. Coil increased from 63.5mm (2.5″) to 70mm (2.75″) in diameter. Higher thermal capacity.
8. New “U series” style cast-aluminum frame for taller cones (more x-mech both top-side from cone to spider and bottom from spider to top plate)
9. Aluminum cast gasket to bolt-on surround.
10. Aluminum cast vent ring to enhance thermal transfer from motor to the frame.
11. Standard with double “XL” leads and “bolted-on” spider
12. Larger and thicker surround (same tooling as U series).
13. Strongest paper cones we have ever produced… new two-piece mold technique.
14. “Large Flange” dust cap just like our larger woofers. Essentially eliminates dust-cap glue failure.
15. Larger spider diameter on the 12/15″ models (the 10″ retains the same 188mm spider)… 12″ up to ~200mm and 15″ up to ~210mm
16. Improved spider material for longer life.

Specifications

T/S SPECS	SAV2 18″ D2	SAV2 18″ D4
RE (Ohms)	3.97	6.06
FS (Hz)	29.051	31.868
VAS (L)	114.234	106.964
Qes	0.424	0.458
Qms	3.052	2.853
Qts	0.372	0.395
Le (mH)	3.6326	4.7903
BL (NA)	32.523	38.159
Mms (Grams)	619.174	549.519
Cms (uM/N)	48.474	45.389
Sens (dB @ 1w/1m)	90.1	90.7

Enclosure Specifications

Sealed Enclosure	2.0 cu ft
Ported Enclosure	3.0 cu ft
Recommended Tuning	35Hz
Recommended Port Area	44 sq in
Displacement
Depth	8.65"
Outside Diameter	15.59″
Cut-Out	14.01″
Physical Dimensions	Download