Samson RS1800A 18-Inch 1000W Class D Active Subwoofer: Power Your Sound with Deep, Accurate Bass
Unleash earth-shaking bass for portable gigs, fixed installations, or DJ sets with the Samson RS1800A. This powerful 18-inch active subwoofer features a 1000-watt Class-D amplifier that delivers tight, punchy low end without breaking a sweat.

The RS1800A integrates seamlessly into any sound system. Balanced stereo XLR inputs and outputs connect to mixers, speakers, and other equipment. High-pass outputs ensure your main speakers only receive higher frequencies, resulting in a clearer, more defined overall sound. A variable low-pass filter lets you fine-tune the subwoofer's response for different environments.

The RS1800A's internally braced wood cabinet provides exceptional sonic clarity and durability. Its heavy-duty epoxy finish protects against wear and tear, making it ideal for both fixed installations and mobile use.

Uncompromising Power and Control
The 1000-watt Class-D amplifier delivers powerful, tight bass that won't distort or falter, even at high volumes. The 18-inch woofer with a 4.5-inch voice coil ensures deep, impactful sound that brings music to life, pulsates through DJ sets, and fills worship services with brilliance.

Effortless System Integration
Balanced stereo XLR inputs and outputs provide flexible connectivity to mixers, speakers, and other equipment. High-pass outputs ensure your main speakers only receive higher frequencies for a clearer overall sound. A variable low-pass filter allows you to fine-tune the subwoofer's response to perfectly match your environment. Additionally, a system polarity switch ensures seamless integration with your existing PA system.

Built to Perform Anywhere
The RS1800A's internally braced wood cabinet guarantees exceptional sonic clarity while maintaining durability. The heavy-duty epoxy finish protects the subwoofer from wear and tear, making it ideal for both fixed installations and mobile use.

The Samson RS1800A subwoofer is the perfect choice for musicians, DJs, and sound professionals who demand powerful, precise low frequencies. Add the RS1800A to your sound system and experience the difference a dedicated subwoofer can make.

Key Features

• 1000 watts of peak power delivers powerful sound reinforcement, ideal for large venues or open-air events.
  
• 18-inch woofer with a 4.5-inch voice coil produces deep, low-frequency bass for a rich and immersive listening experience.
  
• Class D amplifier ensures efficient power delivery and clean audio reproduction, minimizing distortion even at high volumes.
  
• Balanced XLR stereo inputs provide professional connectivity for mixers and other balanced audio equipment.
  
• Full range: Allows for versatile speaker configurations by sending both low and high frequencies to additional speakers.
  
• High pass: Enables you to connect satellite speakers and filter out low frequencies, protecting them from damage and ensuring optimal sound quality.
  
• Variable crossover grants you precise control over the low-frequency output, tailoring the subwoofer's response to your specific needs and listening environment.
  
• Phase switch fine-tunes speaker alignment for optimal sound wave coherence and powerful bass.
  
• Solid wood cabinet construction increases durability and provides superior acoustic resonance for a more natural and pleasing sound.
  
• 1 3/8-inch pole mount receptacle simplifies speaker placement by allowing you to easily mount the subwoofer on a speaker stand or pole.

Technical Specifications

Output Power
1000 watts
Design
Class D
Sensitivity (1w/1m)
90 dB/SPL
Frequency Response
47 Hz - 118 Hz
Low Frequency
18” (457 mm) woofer, 4.5” (114 mm) Voice Coil
Max. SPL (1m)
116 dB
Filter Type
24 dB/Oct
Crossover Filter
55 Hz - 150 Hz (-3dB)
Indicators
Power/Limiter
Inputs
2x XLR Balanced
Outputs
2x Full Range XLR Balanced 2x 120 Hz (-3dB) High Pass XLR Balanced
Pole Mount
1 3/8” (35 mm)
Dimensions
22.76” x 22.28” x 27.52” / 578mm x 566mm x 699mm
Weight
91.5 lb / 41.4 kg