{"product_id":"audiocenter-sa-active-subwoofers","title":"AudioCenter SA Active Subwoofers — Select Model","description":"\u003ch2\u003eAudioCenter SA Active DSP Subwoofers\u003c\/h2\u003e\u003cp\u003eThe AudioCenter SA active subwoofers are self-powered low-frequency cabinets designed to complement SA-series full-range loudspeakers and other professional PA systems. Select the SA3118 single-18-inch subwoofer or SA3218 dual-18-inch subwoofer above; the product image, SKU, price and model-specific description update to the selected cabinet.\u003c\/p\u003e\u003cp\u003eBoth models combine customized 18-inch drivers with 4-inch voice coils, Class-D amplification and integrated 48 kHz DSP. Selectable 80 Hz, 100 Hz and 120 Hz low-pass presets allow the crossover point to be matched to different top cabinets and system layouts. Professional XLR input and linked XLR output simplify signal distribution through multi-cabinet active systems.\u003c\/p\u003e\u003ch3\u003eChoose the SA subwoofer\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSA3118:\u003c\/strong\u003e single 18-inch configuration with 1,000 watts RMS \/ 2,000 watts peak, a published 35 Hz–150 Hz response and 134 dB peak calculated SPL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSA3218:\u003c\/strong\u003e dual 18-inch configuration with 2,000 watts RMS \/ 4,000 watts peak, a published 32 Hz–150 Hz response and 140 dB peak calculated SPL.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe heavy-duty CNC-machined plywood enclosures and professional connection layout make these cabinets appropriate for event, rental, DJ, live-performance, worship and fixed-installation systems. Review the selected variant details below for exact size, weight and model-specific features.\u003c\/p\u003e","brand":"AudioCenter","offers":[{"title":"SA3118 — Single 18 Inch","offer_id":51272498577641,"sku":"SA3118","price":939.0,"currency_code":"USD","in_stock":true},{"title":"SA3218 — Dual 18 Inch","offer_id":51707349827817,"sku":"SA3218","price":1645.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0311\/8134\/0811\/files\/sa3118-1000x619.webp?v=1781526938","url":"https:\/\/smscaraudio.com\/products\/audiocenter-sa-active-subwoofers","provider":"SMS Car Audio","version":"1.0","type":"link"}