ADAM Audio Sub2100 21-Inch Front-Firing Powered Active Subwoofer

The Sub2100 is a high-power studio subwoofer designed for large control rooms and critical listening environments. Its massive 21.5″ paper-cone driver reproduces frequencies as low as 18 Hz, adding tight, authoritative bass that complements any near- or midfield monitor setup. A robust 1,000 W RMS (1,200 W peak) ICE™ amplifier delivers deep, distortion-free output even at high SPLs.

Controls on the rear panel let you dial in the perfect low-end balance: adjustable crossover from 50–150 Hz, gain control, and 0°/180° phase switch ensure seamless integration. With balanced XLR and unbalanced RCA inputs and outputs (including a sub-out for daisy-chaining), the Sub2100 fits effortlessly into any professional audio system.

Key Features

• 21.5″ Paper-Cone Driver: Deep bass extension down to 18 Hz
• 1,000 W RMS / 1,200 W Peak Amplifier: ICE™ PWM design for clean, efficient power
• Adjustable Crossover: 50–150 Hz front-panel control
• Phase Inversion: 0° or 180° to align with satellite monitors
• High SPL Capability: Up to 128 dB peak at 1 m
• Flexible I/O: 2× XLR balanced in, 3× XLR balanced out, 2× RCA in, 2× RCA out
• Front-Firing Port: Bass-reflex design with isolation feet to reduce cabinet resonance

Technical Specifications

• Frequency Response: 18 Hz – 150 Hz
• Crossover Frequency: 50 Hz – 150 Hz
• Max SPL: ≥128 dB peak @ 1 m
• THD: ≤1 % above 60 Hz
• Input Impedance: 10 kΩ
• Enclosure: Front-firing bass-reflex, unshielded
• Power Consumption: 1,200 W peak
• Warranty: 5 years (2 + 3 with registration)

What's In the Box

• 1x ADAM Audio Sub2100 Subwoofer
• 1x Power Cord
• 1x Quick Start Guide & User Manual