{"title":"Subwoofers and Bass Module","description":"\u003cp\u003e\u003c\/p\u003e","products":[{"product_id":"diy-speaker-kit-sdx12-and-dual-apr12-passive-radiator-flat-pack-bundle","title":"DIY Speaker Kit | SDX12 and Dual APR12 Passive Radiator Flat Pack Bundle","description":"\u003cp\u003eOur dual APR12 passive radiator kit offers the ultimate in deep bass performance from our SDX12 subwoofers. The well-braced enclosure and passive radiators with 15 washers (675 g added mass) tune the SDX12 to 22 Hz and, with an 80Hz low pass filter, have an f3 of approximately 20 Hz and usable extension in room down to 10 Hz. With the included panels, you have the ability to make a separately enclosed area for a plate amplifier of your choice with a jig saw.\u003c\/p\u003e\u003cp\u003eThe enclosure is made of 1\" thick sides, top, back, and bottom. The front panel for the subwoofer cutout will be 1.5\" thick when fully assembled. All bracing is 1\/2\" thick and interlocking. This makes for an extremely dead and heavy enclosure. 18.5\" x 18.5\" x 18.5\" external dimensions.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe kit comes with the following:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1 x SDX12 Subwoofer\u003c\/li\u003e\n\u003cli\u003e2 x APR12 Passive Radiators\u003c\/li\u003e\n\u003cli\u003e1 x 2.2 ft^3 Flat Pack Enclosure (2.0 ft^3 with optional internal amplifier chamber)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-family: Helvetica;\"\u003e\u003ca href=\"\/pages\/instructions\"\u003eInstructions\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":53693395829104,"sku":"11","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/1264\/6000\/files\/5013738335.jpg?v=1777295849"},{"product_id":"diy-subwoofer-kit-sdx12-and-sealed-flat-pack","title":"DIY Subwoofer Kit | SDX12 and Sealed Flat Pack","description":"\u003cp\u003eThis SDX12 kit comes with a sealed, 1.0 cubic foot cabinet. In this configuration, the SDX12 has an f3 of about 40 Hz with a smooth sealed box rolloff. If you have an amplifier with boost, you can add 6 dB of boost with a Q of 1 centered at 25 Hz and you will end up with about a 23 Hz f3.\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe flatpack comes fully rabbeted and dadoed for easy assembly with well braced 0.75\" walls and a 1.5\" front baffle.  14\" x 14\" x 14\" external dimensions.\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-family: Helvetica;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-family: Helvetica;\"\u003e\u003ca href=\"\/pages\/instructions\"\u003e\u003cspan style=\"font-family: Helvetica;\"\u003eInstructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-family: Helvetica;\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":53693396648304,"sku":"13","price":599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/1264\/6000\/files\/5223099308.jpg?v=1777295835"},{"product_id":"diy-subwoofer-kit-sdx10-and-sealed-flat-pack","title":"DIY Subwoofer Kit |SDX10 and Sealed Flat Pack","description":"\u003cp\u003eThis SDX10 kit comes with a sealed, 1.0 cubic foot cabinet. In this configuration, the SDX10 has an f3 of about 40 Hz with a smooth sealed box rolloff. If you have an amplifier (not included) with boost, you can add 6 dB of boost with a Q of 1 centered at 25 Hz and you will end up with about a 23 Hz f3.\u003c\/p\u003e\u003cp\u003eThe flatpack comes fully rabbeted and dadoed for easy assembly with well braced 0.75\" walls and a 1.5\" front baffle.  14\" x 14\" x 14\" external dimensions.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-family: Helvetica;\"\u003e\u003ca href=\"\/pages\/instructions\"\u003e\u003cspan style=\"font-family: Helvetica;\"\u003eInstructions\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cspan style=\"font-family: Helvetica;\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"vendor-unknown","offers":[{"title":"Default Title","offer_id":53693396713840,"sku":"14","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/1264\/6000\/files\/5017795937.jpg?v=1777295836"},{"product_id":"diy-speaker-kit-3-way-bass-module-add-on-pair","title":"DIY Speaker Kit | 3-Way Bass Module Add-On (Pair)","description":"\u003cp\u003e\u003cstrong\u003e**Priced Per Pair**\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe \"bass module\" is an add on for the 1TD\/1TD-X or Torii bookshelf to convert your existing speaker into a floor standing 3-way speaker. It utilizes our low distortion SDX10 subwoofer with 22 mm of verified Klippel xmax with our matching APR10 passive radiator to extend the bass response down to 20 Hz.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Benefits:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTrue 3-way system with a crossover point around 220 Hz - not a sat\/sub system\u003c\/li\u003e\n\u003cli\u003eExtended bass response (20 Hz) with greater clarity and punch\u003c\/li\u003e\n\u003cli\u003eBetter midrange clarity due to reduced excursion on the woofer in the existing bookshelf\u003c\/li\u003e\n\u003cli\u003eHigher output levels - 22 mm Klippel verified xmax on the SDX10\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow it works:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe woofer module comes with a passive crossover that gets installed between two sets of biding posts. Your amp connects to the first set of binding posts, which goes to the new crossover. That crossover has an output to the SDX10 and a second set of binding posts. The second set of binding posts get connected to your existing bookshelf with a short run of speaker wire. This keeps the whole system passive but also makes it a true 3-way. Make sure you add 3 washers to each passive radiator when assembling.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's included:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2x SDX10\u003c\/li\u003e\n\u003cli\u003e2x APR10 with washers (add 6 to each APR for punchier bass increasing to 9 for smoother, more extended bass)\u003c\/li\u003e\n\u003cli\u003e4x Pairs Binding Posts\u003c\/li\u003e\n\u003cli\u003e2x SmartNode Crossover Boards\u003c\/li\u003e\n\u003cli\u003eCrossover Parts (upgraded parts shown, standard pictures coming soon)\u003c\/li\u003e\n\u003cli\u003eScrews\u003c\/li\u003e\n\u003cli\u003eWire\u003c\/li\u003e\n\u003cli\u003eQuick Connects\u003c\/li\u003e\n\u003cli\u003eOptional flat pack (self assembly required)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFrequency Response (with existing bookshelf): 23 Hz to 20 kHz, +\/- 3 dB\u003c\/li\u003e\n\u003cli\u003eImpedance: 4 Ohm nominal\u003c\/li\u003e\n\u003cli\u003eRecommended wattage: 50 - 300 watts or more\u003c\/li\u003e\n\u003cli\u003eWeight (assembled): 72 lbs each\u003c\/li\u003e\n\u003cli\u003eDimensions: 26\" H x 8.5\" W x 12\" D\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1003\/1264\/6000\/files\/css-3-way-bass-module-add-on-pair-plans.pdf?v=1791508507\"\u003ePlans\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"CSS Audio","offers":[{"title":"No Flat Packs \/ Standard - Basic Crossover Parts","offer_id":67646741807472,"sku":"00032-A","price":949.0,"currency_code":"USD","in_stock":true},{"title":"No Flat Packs \/ Superior - High End Parts","offer_id":67646741840240,"sku":"00032-C","price":1449.0,"currency_code":"USD","in_stock":true},{"title":"With Flat Packs \/ Standard - Basic Crossover Parts","offer_id":67646741873008,"sku":"00032-B","price":1349.0,"currency_code":"USD","in_stock":true},{"title":"With Flat Packs \/ Superior - High End Parts","offer_id":67646741905776,"sku":"00032-D","price":1849.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/1264\/6000\/files\/5007994453.jpg?v=1791318230"},{"product_id":"diy-subwoofer-kit-sealed-sdx12-with-1000-watt-plate-amp","title":"DIY Subwoofer Kit | Sealed SDX12 with 1000 Watt Plate Amp","description":"\u003cp\u003eBuild a compact, high-performance subwoofer without having to piece together the components yourself. This kit combines our \u003cstrong\u003eCSS SDX12 12\" XBL² subwoofer driver\u003c\/strong\u003e with a \u003cstrong\u003e1000-watt plate amplifier\u003c\/strong\u003e and a properly sized sealed enclosure to deliver deep, clean bass with excellent transient response and very high output capability.\u003c\/p\u003e\u003cp\u003eIn its natural sealed alignment, the SDX12 reaches an \u003cstrong\u003eF3 of approximately 41 Hz\u003c\/strong\u003e. While that may not look exceptionally deep on paper, the SDX12 has the excursion capability and motor strength to take advantage of electronic equalization. Using the amplifier's built-in \u003cstrong\u003eparametric EQ (PEQ)\u003c\/strong\u003e, the system can be extended significantly deeper while maintaining the benefits of a compact sealed enclosure.\u003c\/p\u003e\u003cp\u003eFor a target response extending to approximately \u003cstrong\u003e21 Hz F3\u003c\/strong\u003e, set the PEQ to:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 24 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain:\u003c\/strong\u003e +6 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e 1.0\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWith these settings, the sealed SDX12 transforms into a genuinely full-range subwoofer capable of reaching into the lowest octave of music and movie content, while retaining the controlled, well-damped character that makes sealed subwoofers so appealing.\u003c\/p\u003e\u003cp\u003eThe included \u003cstrong\u003e1000-watt plate amplifier\u003c\/strong\u003e provides plenty of power for the SDX12 and gives you the flexibility to fine-tune the subwoofer to your room and system using its onboard DSP and PEQ controls.\u003c\/p\u003e\u003ch3\u003eEverything You Need in One Kit\u003c\/h3\u003e\u003cp\u003eWe've put together everything you need to build a \u003cstrong\u003eworld-class sealed subwoofer\u003c\/strong\u003e in one package. There's no need to source a compatible amplifier, calculate the enclosure, or track down the small parts separately. The driver, amplifier, cabinet components, and necessary hardware are all matched to work together as a complete system.\u003c\/p\u003e\u003cp\u003eOnce assembled, you get a subwoofer that combines:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003elow distortion and high excursion capability of the CSS SDX12\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e1000 watts of amplification\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eA compact and easy-to-build \u003cstrong\u003esealed enclosure\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBuilt-in \u003cstrong\u003ePEQ for deep-bass extension and room integration\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eApproximately \u003cstrong\u003e21 Hz F3 with the recommended EQ settings\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe ability to further adjust the response to suit your room and listening preferences\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you're looking for the performance of a serious high-end subwoofer but want the value and satisfaction that comes from building it yourself, the Sealed SDX12 kit gives you everything needed to do it.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eDimensions: 14\" x 14\" x 20\"\u003c\/p\u003e\u003cp\u003eWeight: 97 lbs assembled\u003c\/p\u003e","brand":"CSS Audio","offers":[{"title":"Default Title","offer_id":67646748197232,"sku":"00079","price":1099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/1264\/6000\/files\/6150497343.jpg?v=1791318289"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/1264\/6000\/collections\/3976299561.jpg?v=1777295681","url":"https:\/\/www.css-audio.com\/collections\/subwoofers-and-bass-module.oembed","provider":"CSS","version":"1.0","type":"link"}