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<h3 class="uppercase text-xl font-bold text-neutral-500 mb-3 sm:mb-4">Description</h3>
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<div>Deep impact — the CELTO ACS218 unleashes a commanding 3000W RMS (6000W Peak) with profound, controlled low-end down to 30 Hz in a compact, self-powered dual 18" design. This high-performance subwoofer perfectly complements ACS10 arrays, delivering seamless extension for dynamic, musical bass in any configuration. Suited for live music, corporate events, auditoriums, houses of worship, entertainment venues, and portable systems requiring powerful yet precise reinforcement. Twin custom 18" die-cast woofers with 4" PI-grade voice coils and Kevlar-loaded cones provide exceptional excursion and clarity. Integrated 4th-generation Class D amplifier with DSP (crossover, EQ, phase, limiter) and presets (Flat/Punch/Deep) ensure optimal performance and protection. Heavy-braced Baltic birch plywood cabinet with tongue-and-groove assembly and touring-grade rubberized PolyUrea finish stands up to rigorous use. Calculated 139 dB peak SPL with smart thermal management for sustained high-output operation. Balanced XLR in/thru and PowerCon connectivity make integration truly plug-and-play. The ACS218 proves that earth-moving bass can be both devastatingly deep and elegantly compact—no need to sacrifice space for seismic results</div>
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<h3 class="uppercase text-xl font-bold text-neutral-500 mb-3 sm:mb-4">Key Features</h3>
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<li>Compact self-powered dual 18" subwoofer with 3000W RMS (6000W Peak) Class D amplification</li>
<li>Deep, controlled extension down to 30 Hz with musical clarity and punch</li>
<li>Twin custom 18" die-cast woofers (4" PI-grade voice coils, Kevlar-loaded cones) for high excursion and durability</li>
<li>Integrated DSP with selectable presets (Flat / Punch / Deep), full protection</li>
<li>Calculated 139 dB peak SPL in a transport-friendly, heavily braced cabinet</li>
<li>Seamless integration with ACS10 arrays (ground-stacked or pole-mounted)</li>
<li>Active PFC + SMPS for stable, efficient power delivery (accept universal mains from 90V to 260V)</li>
<li>Baltic birch plywood with tongue-and-groove assembly and rubberized PolyUrea finish</li>
<li>True plug-and-play connectivity (balanced XLR In/Thru + Powercon)</li>
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<h3 class="uppercase text-xl font-bold text-neutral-500 mb-4 sm:mb-6">Technical specifications</h3>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Speaker type</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">Self-powered , active subwoofer</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Maximum SPL (calculated)</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">139 dB Peak</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Frequency response (-6 dB no preset)</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">30~95 Hz</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Nominal directivity (-6 dB)</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">Omnidirectional</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Design</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">Dual 18” (2x18”) subwoofer</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Transducers</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">CELTO 18SW1201-4 with PI grade In/Out voice coil and Kevlar™ loaded paper cone</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Amplifier Module</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">CELTO SPM3000S with aluminium heatsink</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Power Supply</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">CELTO Pulsar with AC</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Amplifier Type</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">4 generaon CELTO TrueSound proprietary class D</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Power Output</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">6000 W Peak / 3000 W RMS</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Preamplifier</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">-120dB noise floor op-amps, MUSE™ Fine Gold capacitors</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">DSP Architecture</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">115dB 32-bit AKM AD/DA converters, 56-bit accumulators</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">DSP Control</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">Crossover, EQ, Phase and Limiter</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">DSP Presets</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">Flat / Punch / Deep</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Connectivity</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">Balanced XLR In/Thru, Powercon In/Out</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Enclosure</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">Heavy Braced Exterior grade Birch Plywood with tongue and groove assembly</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Cabinet finish</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">Touring grade Rubberized PolyUrea coating</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Floor monitor use</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">N/A</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Flying hardware</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">N/A</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Mounting hardware</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">2x M20 Thread sockets + 2x M10 Threads</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">LF</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">2x18"CELTO 18SW1201-4</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Woofer Chassis</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">Die Cast Aluminium</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Woofer Voice coil</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">4" / 100 mm long throw</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Speaker size (HxWxD)</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">1100 x 580 x 740 mm</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Speaker Weight</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">83 kg</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Shipping information</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">92 kg<br>1220 x 680 x 850 mm</td>
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<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 font-semibold text-xs sm:text-sm text-neutral-100 align-top">Accessories</td>
<td class="px-3 py-2 sm:px-4 sm:py-3 md:px-6 text-xs sm:text-sm text-neutral-300">ACS218-SBAG (padded cover bag)<br>CB700 (connection bar)<br>SUBWHKIT100C (castor wheel kit)</td>
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