Beta SLA218SP active subwoofer

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Dual 18-inch high-power low-frequency drivers for deep and powerful bass output
Built-in 4000W RMS Class-D amplifier delivers high efficiency with low heat generation
Extended low-frequency response from 35 Hz to 200 Hz for tight and punchy bass
Integrated DSP with 1.8″ TFT display for easy control, presets, and system monitoring
High maximum SPL up to 131 dB peak, ideal for large venues and outdoor events
Rugged 18 mm plywood enclosure ensures durability for touring and professional use
Powder-coated steel grille with water-resistant cloth for added protection
Multiple protection circuits including overload, overheat, and short-circuit safety
Designed for seamless integration with line array and professional PA systems

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Description
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The Beta3 SLA218SP Dual 18-inch Active Subwoofer is a high-performance, professional-grade bass system engineered for large-scale sound reinforcement applications. Designed for concerts, line array systems, DJ events, auditoriums, clubs, and outdoor shows, this subwoofer delivers deep, powerful, and distortion-free low frequencies that enhance the overall audio experience. Equipped with two high-efficiency 18″ low-frequency drivers and a built-in 4000W RMS Class-D power amplifier, produces exceptional low-end impact with outstanding clarity. Its extended 35 Hz – 200 Hz frequency response ensures tight and punchy bass reproduction, making it ideal for music genres requiring strong sub-bass performance.

1. Is the Beta3 SLA218SP an active or passive subwoofer?
A-1 The SLA218SP is a fully active (powered) subwoofer with a built-in amplifier and DSP, so no external power amplifier is required.

2. What type of events is this subwoofer suitable for?
A-2 It is ideal for concerts, DJ shows, weddings, auditoriums, clubs, outdoor events, and large PA systems.

3. Can it be used with line array speakers?
A-3 Yes, the SLA218SP is specifically designed to work perfectly with SLA series line array systems and other professional PA speakers.

4. Does it have built-in protection?
A-4 Yes, it includes overload, over-temperature, DC, and limiter protection, ensuring safe and reliable operation.

5. Is this product suitable for Indian power conditions?
A-5 Absolutely. It supports a wide 100V–240V AC voltage range, making it suitable for use across all regions of India.

Specifications

Brand	Beta3
Model	SLA218SP
Product Type	Active / Powered Dual 18″ Subwoofer
Drivers	2 × 18″ low-frequency drivers
Voice Coil	100 mm high-temperature voice coils
Amplifier Type	Built-in Class-D power amplifier with DSP
Total Power (RMS)	4000 W RMS
Frequency Response (-10 dB)	35 Hz – 200 Hz
Maximum SPL (1 m)	125 dB (Continuous) / 131 dB (Peak)
Input Impedance	Balanced ≥ 20 k Ω / Unbalanced 10 k Ω
Input Connector	1 × XLR balanced input
DSP & Control	Integrated DSP, 1.8″ TFT display, 16 scene modes, system pre sets
Protection Circuits	Over-temperature, overload, DC & short-circuit protection
Enclosure Material	18 mm high-grade plywood cabinet
Grille	Powder-coated Q235 steel grille with water-resistant cloth
Cooling	Intelligent forced-air cooling
Operating Voltage	AC 100 V – 240 V, 50 / 60 Hz
Dimensions (W × D × H)	976 × 774 × 710 mm
Net Weight	92 kg
Application	Concerts, line array systems, DJs, large venues, outdoor events