Description
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.
Key Features
- Compact self-powered dual 18" subwoofer with 3000W RMS (6000W peak) Class D amplification
- Deep, controlled extension down to 30 Hz with musical clarity and punch
- Twin custom 18" die-cast woofers (4" PI-grade voice coils, Kevlar-loaded cones) for high excursion and durability
- Integrated DSP with selectable presets (Flat / Punch / Deep), full protection, and cardioid options
- Calculated 139 dB peak SPL in a transport-friendly, heavily braced cabinet
- Seamless integration with ACS10 arrays (ground-stacked or pole-mounted)
- Baltic birch plywood with tongue-and-groove assembly and rubberized PolyUrea finish
- True plug-and-play connectivity (balanced XLR in/thru + PowerCon)
Applications
Portable
Professional sound, on demand
Touring
Engineered to endure
Technical specifications
| Speaker type | Self-powered , active subwoofer |
| Maximum SPL (calculated) | 139 dB Peak |
| Frequency response (-6 dB no preset) | 30~95 Hz |
| Nominal directivity (-6 dB) | Omnidireconal |
| Design | Dual 18” (2x18”) subwoofer |
| Transducers | CELTO 18SW1201-4 with PI grade In/Out voice coil and Kevlar™ loaded paper cone |
| Amplifier Module | CELTO SPM3000S with alumium heatsink |
| Power Supply | CELTO Pulsar with AC |
| Amplifier Type | 4 generaon CELTO TrueSound proprietary class D |
| Power Output | 6000 W Peak / 3000 W RMS |
| Preamplifier | -120dB noise floor op-amps, MUSE™ Fine Gold capacitors |
| DSP Architecture | 115dB 32-bit AKM AD/DA converters, 56-bit accumulators |
| DSP Control | Crossover, EQ, Phase and Limiter |
| DSP Presets | Flat / Punch / Deep |
| Connectivity | Balanced XLR In/Thru, PowerCon In/Out |
| Enclosure | Heavy Braced Exterior grade Birch Plywood with tongue and groove assembly |
| Cabinet finish | Touring grade Rubberized PolyUrea coating |
| Floor monitor use | N/A |
| Flying hardware | N/A |
| Mounting hardware | 2x M20 Thread sockets + 2x M10 Threads |
| LF | 2x18"CELTO 18SW1201-4 |
| Woofer Chassis | Die Cast Aluminium |
| Woofer Voice coil | 4" / 100 mm long throw |
| Speaker size (HxWxD) | 1100 x 580 x 740 mm |
| Speaker Weight | 83 kg |
| Shipping information |
92 kg 1220 x 680 x 850 mm |
| Accessories |
ACS218-SBAG (padded cover bag) CB700 (connection bar) SUBWHKIT100C (castor wheel kit) |
Expand your system
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