Description
The LD Systems ICOA PRO SUB 21 A is a powerful 21" active bass reflex subwoofer designed to deliver deep, punchy, and precise bass for demanding professional setups. Equipped with a 4.5" neodymium voice coil and powered by a 1500W RMS (3000W peak) Class-D amplifier, this subwoofer reaches up to 136 dB SPL and extends down to 29 Hz—making it perfect for mobile DJs, live events, clubs, and fixed installations.
Its advanced SysCore DSP provides smart FIR/IIR filtering, adjustable delay (up to 50 m), and six application presets, including cardioid and low-latency modes. You can configure and control the subwoofer via the onboard color display with one-knob control or wirelessly using the free ICOA PRO app over Bluetooth 5.1 with True Wireless Stereo and Mirroring.
Built into a rugged birch plywood cabinet with a shock-resistant grille and durable polyurea coating, it includes M20 pole mounts, stacking recesses, ergonomic handles, and airflow-optimized ports for professional, reliable performance on the road or on stage.
Product Specifications:
Peak Output Power: 3000W
RMS Output Power: 1500W
Amplifier Class: Class D
Max SPL (Pink Noise, 1m): 136 dB
Frequency Response: 29 Hz – 80 Hz
Enclosure: 15–18 mm birch plywood with polyurea coating
Handles: 8 ergonomic handles
Mounting: 2x M20 threaded pole mounts (vertical & horizontal)
Cooling: Fanless with airflow-assisted design
Driver
Size: 21" (533.4 mm)
Magnet Type: Ferrite
Voice Coil: 4.5" (114.3 mm)
Inputs/Outputs
Inputs: 2x XLR (3-pole, female)
Outputs: 2x XLR Thru (3-pole, male)
Power Connector: PowerCON with loop-through
DSP & Signal Processing
SysCore DSP with FIR/IIR filters
AD/DA Conversion: 24-bit / 48 kHz
SNR: ≥108 dB
Delay: Up to 50 meters
Presets: 6 (including cardioid and low-latency modes)
EQ: 4-band parametric EQ
Bluetooth
Version: 5.1
Features: Audio Streaming (A2DP), TWS, TWS Mirroring, App Control
Codecs: SBC, AAC
Power Supply
Voltage: 100–240V AC, 50/60 Hz
Rated Power: 1300W
Power Supply Type: SMPS
Fuse: T10AH/250V
Environmental
Operating Temp: 32°F to 104°F (0°C to 40°C)
Max Humidity: 80% (non-condensing)
Included Items
1x LD Systems ICOA PRO SUB 21 A
1x Power Cord
Dimensions (W x H x D): 22.25" x 27.56" x 27.52"
Weight: 125.2 lbs (56.8 kg)
Shipping Dimensions and Weight
Shipping Dimensions (W x H x D): 26" x 30" x 30"
Shipping Weight: 140 lbs
Get the gear you need now with easy financing
Get the gear you need now with Financing and Lease options. As an artist or sound professional your business needs high quality speakers, lighting and cases to do your job, be professional and competitive.
Choose Shop Pay or After Pay in checkout for instant financing application. We also offer Acima Leasing, Synchrony, Progressive or Snap financing just give us a call 1-800-700-4542.
*Our online prices are always honored instore guaranteed.
Military & First Responder Discounts
We're proud to support those who serve. Active-duty military, veterans, and first responders qualify for a special discount on your gear. See our Military Discount details here and how to redeem.