LD Systems ICOA SUB Pro 21
Powered 21 High-Performance Bass Reflex Active Subwoofer
FREE UK Delivery
Earn 2075 Loyalty Points
Want to Click and Collect or try items at our Guildford Store?
The store is open 10am - 6pm Monday to Saturday and 11am - 5pm Sunday and bank holidays.
The stock information shows the quantity of units that are available to purchase at the Guildford store and the quantity of units that are available at our off-site Guildford warehouse. These stock levels are updated in real time.
Our Click and Collect service is available at our Guildford store from 10am - 6pm Monday to Saturday, and 11am - 5pm on Sunday. You can either choose click and collect as your delivery option online or, during store opening hours, call our sales team at 01483 456777 to place a 10% deposit.
If you have placed your order online, you will receive a confirmation email of your order and a separate follow-up text or email to confirm when your item is ready for collection.
Please do not come to the store before you have received the follow-up message, as your order may not yet be ready at the store.
If the only available stock is in our off-site warehouse it can be brought to the store location for you to try - you just need to contact the store within opening hours. Please note any requests received after 3.30pm will not arrive at the store until the following morning.
Please be aware that, unless you have paid a deposit to reserve the item, it will continue to be free, both online and in-store, for another customer to buy. Therefore we would advise you to place a 10% deposit by either using the on-line click and collect service or calling us 01483 456777.
SKU: LDICOASUB21APRO
You might also need
Product Description
The ICOA PRO SUB 21 A is a powerful 21-inch high-performance bass reflex subwoofer designed for professional audio applications. Delivering deep, precise bass down to 29 Hz with a peak output of 3,000 W and 136 dB max SPL, this subwoofer is ideal for mobile DJs, live events, festivals, clubs and permanent installations. Its 21-inch neodymium woofer with a 4.5-inch voice coil ensures fast, tight low-end response, while the Class D amplifier provides robust 1,500 W RMS power. The compact birch plywood cabinet with polyurea coating is rugged yet lightweight for touring and installation use. Advanced SysCore DSP offers 4-band parametric EQ, delay up to 50 metres, multiple crossover frequencies, and presets for low-latency and cardioid modes. Connectivity is flexible with dual XLR inputs and outputs plus powerCON loop-through. The system can be controlled remotely via a free app on iOS or Android, allowing wireless configuration and multi-speaker setups. Ergonomic handles, M20 pole flanges, stacking grooves and an optional castor board make transport and setup effortless. Fanless cooling keeps the electronics safe without noise interference. The ICOA PRO SUB 21 A combines premium build quality with powerful sound performance, making it a reliable choice for demanding professional sound reinforcement.
Key Features:
- Powerful 21-inch Neodymium Woofer:
Delivers tight, precise bass response with a 4.5-inch voice coil for enhanced low-frequency performance down to 29 Hz. - Advanced SysCore DSP with App Control:
Provides 4-band parametric EQ, delay, presets and wireless control via a free smartphone or tablet app. - Robust, Compact Cabinet Design:
Made from 18 mm birch plywood with polyurea coating and equipped with ergonomic handles and stacking features for easy transport and setup.
High-Performance Audio Engineering:
The ICOA PRO SUB 21 A’s engineering centres on a long-throw 21-inch neodymium woofer paired with a powerful Class D amplifier delivering 1,500 W RMS power. This combination ensures clean, distortion-free bass with a maximum SPL of 136 dB. Four optimised bass reflex ports enhance the low-frequency extension and air movement, producing a rich and dynamic sound ideal for large venues. The advanced DSP system employs FIR and IIR filters with multiband limiters, safeguarding the system during demanding performances while preserving audio integrity even at high volumes.
Flexible Integration and Control:
This subwoofer offers versatile connectivity with two XLR inputs, two XLR outputs and powerCON loop-through power connections, allowing straightforward system expansion and integration. The SysCore DSP includes multiple crossover frequencies and adjustable delay up to 50 metres, enabling perfect alignment with various speaker setups. The free ICOA PRO app allows users to control multiple units wirelessly, create stereo or multi-sub configurations, and stream music via Bluetooth 5.1 with TWS functionality, streamlining the setup process for professional sound engineers.
Durable and User-Friendly Design:
Designed with touring and installation professionals in mind, the ICOA PRO SUB 21 A features a compact and sturdy birch plywood cabinet with an ultra-resistant polyurea finish. Eight ergonomic handles ensure secure handling from all sides, while M20 threads and stacking grooves provide flexible mounting options. The fanless passive cooling system operates silently, protecting electronics with airflow assistance. Additionally, optional accessories such as a castor board and protective covers facilitate transport and protection during use.
Specifications:
- Peak output power: 3,000 W
- RMS output power: 1,500 W
- Amp class: Class D
- Max. SPL peak (pink noise, halfspace/1 m): 136 dB
- Frequency response (-10 dB): 29 - 120 Hz
- Inputs: 2 x XLR 3-pole female
- Outputs: 2 x XLR 3-pole male
- Bass driver size: 21 inches (547 mm)
- Voice coil diameter: 4.5 inches
- Cabinet material: 18 mm birch plywood with polyurea coating
- Dimensions (W x H x D): 565.5 x 700 x 698.8 mm
- Weight: 57 kg
- Bluetooth version: 5.1 (SBC, AAC codecs)
- Delay adjustment: up to 50 metres
- Power supply: 100-240 V AC, 50-60 Hz with powerCON loop-through
- Cooling: Fanless passive with airflow assistance