RCF SUB 18-AS Active 18" Subwoofer 2200W

The SUB 18-AS is a professional-grade, high-output 18" active subwoofer designed to deliver deep, controlled bass for live sound and portable PA applications. Equipped with a powerful 2200W Class-D amplifier and a precision-engineered 18" transducer with a 4.0" voice coil, it delivers up to 135 dB SPL with extended low-end response down to 35 Hz. Ideal for pairing with 10", 12", or 15" full-range speakers, the SUB 18-AS features advanced Bass Motion Control for consistent performance at any volume. The rugged enclosure is crafted from Baltic birch plywood and finished with a durable polyurea coating to withstand the demands of touring and mobile setups. Rear panel controls include volume, polarity, and selectable low-pass crossover, while input options include mono/stereo combo XLR/TRS and stereo XLR crossover outputs for flexible system integration.

Features:
2200W peak power Class-D amplifier for powerful, efficient performance
135 dB maximum SPL for high-output bass reinforcement
Extended frequency response from 35 Hz to 400 Hz
Custom 18" woofer with 4.0" voice coil for deep, punchy bass
Bass Motion Control algorithm ensures clarity and dynamic response
Combo XLR/TRS inputs (mono/stereo), XLR link and stereo XLR crossover outputs
Rear panel controls for volume, polarity, and low-pass frequency selection
Tour-grade Baltic birch plywood cabinet with durable polyurea coating
Steel grille for transducer protection
M20 threaded pole mount and dual side handles for portability
Convection cooling for silent, maintenance-free operation
CE certified and built for professional touring and installation use

Specifications:

Acoustical
Frequency Response: 20 Hz – 400 Hz
Max SPL @ 1m: 135 dB
Woofer: 1 x 18", 4.0" voice coil

Input/Output
Input Signal: Balanced / Unbalanced
Input Connectors: Combo XLR / ¼” Jack
Output Connectors: XLR
Input Sensitivity: -2 dBu / +4 dBu

Processing
Protections: Thermal
Limiter: Soft limiter
Controls: Volume, polarity, low-pass filter frequency

Amplification
Total Power: 2200 W peak
Cooling: Convection
Power Connection: VDE

Construction
Cabinet Material: Baltic birch plywood
Finish: Black polyurea coating
Grille: Steel
Handles: 2 side-mounted
Pole Mount: M20 threaded insert

Dimensions & Weight
Height: 693 mm / 27.28 inches
Width: 505 mm / 19.88 inches
Depth: 685 mm / 26.97 inches
Weight: 37.6 kg / 82.89 lbs