24% Off

dB Technologies SIGMA S218 2700W Active Bass Reflex Subwoofer with 2x 18" Woofers

SKU: DBSIGMAS218 MFR: SIGMA S218
Earn VIP Reward Points

Key Features

  • Experience powerful bass with this active subwoofer's dual 18" woofers for deep sound.
  • Achieve exceptional audio clarity with a frequency response of 42 - 120 Hz for rich sound.
  • Maximize your sound impact with a peak power of 3600W, perfect for large venues and events.
  • Enjoy lasting performance with a durable plywood housing, designed to withstand rigorous use.
  • Easily integrate into any setup with XLR inputs/outputs for flexible connectivity options.
  • Customize your sound with onboard controls for subwoofer level, delay, and crossover settings.
See More Product Details
Special Order?Estimated to Ship: 09/05/2025
Free Shipping

See Options

1

Protect your gear with Adorama Protect.* Learn more

2 Year

$299.99

3 Year

$449.99

5 Year

$949.99

Available to U.S. customers only.

Need help? Ask our experts.

Overview
Compare
Specs
Protection
Q&A

Questions & Answers

Reviews about this item

Review Summary

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Failure Protection

Failure Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500

dB Technologies SIGMA S218 Specifications

Speaker Type

Speaker Type

Jump to...
  • Speaker Type

    Active Bass Reflex Subwoofer

Acoustical Data

Jump to...
  • Frequency Response [-10dB]

    42 - 120 Hz

  • Max SPL

    138 dB

  • Directivity

    Omnidirectional

  • LF

    2x 18" (45.72cm)

  • Voice Coil LF

    4" (10.16cm)

Amplifier

Jump to...
  • Amp Technology

    Digipro G3

  • Amp Class

    Class D

  • PRG Power

    2700W

  • RMS Power

    1800W

  • Peak Power

    3600W

Processor

Jump to...
  • Controller

    Analog/Digital

  • Limiter

    Peak, RMS, Thermal

  • Crossover Frequency

    90 / 120 Hz

  • LF X-Over out slope

    24 dB/Octave

  • Internal Controller

    28-bit/56-bit DSP

Controls

Jump to...
  • Controls

    Subwoofer level, Subwoofer setup (Delay, Polarity), X-Over, Outputs Mode

Input/Output

Jump to...
  • Signal Input

    2x XLR

  • Signal Output

    2x XLR X-Over Out/ Link Out

Power Supply

Jump to...
  • Absorption

    At 1/8th of power in medium use conditions: 2.45A / 290W (220-240V) - 4A / 290W (100-120V)
    At 1/3rd of power in maximum use conditions: 5.25A / 680W (220-240V) - 8.57A / 660W (100-120V)
    Full-power rated absorption: 6A (220-240V) - 12A (100-120V)
    With speaker on in no-signal condition (idle): 41W
    Inrush current: 88.67A
    Total current and power allowed in a daisy-chained system: 10A / 2300W (220-240V) - 3A / 330W (100-120V)

Mechanics

Jump to...
  • Housing

    Plywood

  • Grille

    NC-machined

  • Handles

    4 (2x Side)

  • Pole Mount

    Yes, 36mm (1.42") (provision: M20)

  • Dimensions (WxHxD)

    500 x 1210 x 530mm (19.69 x 47.64 x 20.87")

  • Weight

    59.8kg (131.84 lbs)

About dB Technologies SIGMA S218

Experience the unparalleled power and precision of the SIGMA S218, a top-tier addition to the SIGMA series, renowned for its professional-grade live amplification capabilities. This active bass reflex subwoofer is meticulously designed to complement the SIGMA S115 F, creating a harmonious full-range cluster that excels in both live performances and installed sound applications.

The SIGMA S218 is outfitted with a pair of robust 18" woofers, each featuring a 4" voice coil, delivering a rich, resonant bass that truly brings your audio to life. Powered by a CLASS D Digipro G3 2700W PRG, this subwoofer ensures high-quality sound reproduction with minimal distortion, even at high volumes.

One of the standout features of the SIGMA S218 is its dual input and output system, which offers the flexibility of mono or stereo configuration. This allows for a tailored sound experience that suits your specific needs and preferences.

Furthermore, the SIGMA S218 is equipped with on-board Phase and Delay controls. These features provide you with the ability to fine-tune your system in any situation, ensuring optimal performance from this powerful yet precise PA system.

In summary, the SIGMA S218 2700W Active Bass Reflex Subwoofer is more than just a piece of audio equipment; it's a testament to SIGMA's commitment to delivering superior sound quality and innovative design.

dB Technologies SIGMA S218 Features

  • Active bass reflex subwoofer from the professional-grade SIGMA series
  • Equipped with dual 18" woofers and a 4" voice coil for rich, resonant bass
  • Powered by a CLASS D Digipro G3 2700W PRG for high-quality sound reproduction
  • Dual input and output system for flexible mono or stereo configuration
  • On-board Phase and Delay controls for precise sound customization
  • Ideal for both live performances and installed sound applications

Key Features

  • Experience powerful bass with this active subwoofer's dual 18" woofers for deep sound.
  • Achieve exceptional audio clarity with a frequency response of 42 - 120 Hz for rich sound.
  • Maximize your sound impact with a peak power of 3600W, perfect for large venues and events.
  • Enjoy lasting performance with a durable plywood housing, designed to withstand rigorous use.
  • Easily integrate into any setup with XLR inputs/outputs for flexible connectivity options.
  • Customize your sound with onboard controls for subwoofer level, delay, and crossover settings.

What's in the box:

  • dB Technologies SIGMA S218 2700W Active Bass Reflex Subwoofer (2x 18 " Woofers)
  • powerCON Power Cable
  • Fuses Rated for Operation in the 100-120V Range
  • Quick Start User Manual
  • dB Technologies 2 Year Warranty