What is the peak power output of the ICOA SUB 15A?

The subwoofer is equipped with a Class D amplifier that delivers a peak power of 1600 watts. This allows for high-impact bass response and sufficient headroom for demanding live performances.

How deep does the bass frequency response go?

The ICOA SUB 15A is capable of producing low frequencies down to 36 Hz. This depth ensures a full-bodied sound suitable for bass-heavy genres and cinematic multimedia presentations.

What is the maximum Sound Pressure Level (SPL)?

The unit reaches a maximum SPL of 131 dB. This output level is high enough to provide significant low-end reinforcement in medium to large venue settings.

What is DynX DSP technology?

DynX DSP is LD Systems' proprietary digital signal processing technology. It provides optimsed presets and crossover settings to ensure the subwoofer performs with precision and stays protected at high volumes.

Does the ICOA SUB 15A support cardioid configurations?

Yes, the integrated DSP includes a cardioid mode. When used in arrays, this feature helps direct the bass energy toward the audience while cancelling out sound behind the subwoofer to keep the stage quiet.

What material is the cabinet made from?

The housing is constructed from rugged plywood. This material is chosen for its acoustic properties and its ability to withstand the physical demands of transport and live use.

Can I stack multiple units safely?

Yes, the cabinet features a secure stacking design. The indentations on the housing ensure that multiple ICOA SUB 15A units remain stable when placed on top of one another.

What type of amplifier is used in this model?

The subwoofer uses a highly efficient Class D amplifier. Class D technology is preferred for PA equipment because it provides high power output with minimal heat generation and reduced weight.

What applications is the ICOA SUB 15A best suited for?

It is designed for DJs, live bands, and multimedia presentations. Its versatile DSP and high SPL make it a flexible choice for both mobile entertainers and fixed event spaces.

Are there adjustable crossover frequencies?

Yes, the DynX DSP allows for customizable crossover presets. This makes it easy to align the subwoofer's frequency range with various sizes and brands of full-range PA speakers.

How does the ICOA SUB 15A compare to the QSC KLA181?

While the QSC KLA181 is a larger 18-inch subwoofer, the ICOA SUB 15A offers a more portable 15-inch form factor. The LD Systems model provides modern DSP features like cardioid mode which may not be present on all older 18-inch designs.

Is this subwoofer suitable for use with RCF ART series speakers?

Yes, the ICOA SUB 15A can be used as a low-end extension for speakers like the RCF ART 735-A MK5. The adjustable DSP settings allow users to match the crossover point for a balanced system sound.

Gear article

LD Systems ICOA SUB 15A 15" Active PA Subwoofer

The LD Systems ICOA SUB 15A is a high-performance active subwoofer featuring a 15-inch driver and a Class D amplifier capable of 1600 watts peak power. Designed for professional reinforcement in DJ sets, live bands, and multimedia applications, it delivers low-frequency extension down to 36 Hz with a maximum SPL of 131 dB.

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Overview

The LD Systems ICOA SUB 15A serves as a foundational low-end component within the ICOA series, specifically engineered to provide a robust bass response for mobile performers and fixed installations. Utilizing a 15-inch woofer, the unit balances portability with the significant air displacement required for larger venues. The system is built into a rugged plywood enclosure, designed to withstand the rigours of touring while maintaining acoustic rigidity.

Technical Features and DSP

At the heart of the ICOA SUB 15A is a high-efficiency Class D amplifier providing 1600 watts of peak power. The integration of proprietary DynX DSP technology allows users to fine-tune the output via customisable presets. These presets include adjustable crossover frequencies, enabling seamless integration with various full-range tops. Additionally, the unit features a cardioid mode, which is essential for multi-subwoofer arrays to direct sound forward and reduce unwanted low-frequency build-up on stage.

Sound Character and Performance

The subwoofer is characterised by a precise and powerful bass delivery. Reaching down to 36 Hz, it provides a deep tactile feel suitable for electronic music and live kick drums. With a maximum SPL of 131 dB, it maintains clarity even at high volumes. The digital processing ensures that the low-end remains controlled, preventing the muddiness often associated with high-output 15-inch cabinets.

Physical Design and Integration

The physical construction of the ICOA SUB 15A prioritises durability and ease of use. The plywood housing features a secure stacking design, allowing multiple units to be safely piled for increased output. Its ergonomic handles facilitate transport, while the standard M20 threaded pole mount allows for the mounting of full-range speakers directly above the sub. The unit is typically priced around £633, positioning it as a mid-tier professional solution.

Comparison to Alternatives

When compared to larger 18-inch units like the QSC KLA181, the ICOA SUB 15A offers a more compact footprint while still delivering substantial SPL. It provides a more powerful and DSP-rich alternative to entry-level models such as the SubZero P15X or the dB Technologies B-Hype 15. While it lacks the walnut aesthetic of lifestyle-oriented units like the AVCOM 8" Active Subwoofer, its rugged build and cardioid functionality make it better suited for professional stage use alongside monitors like the RCF NX 915-SMA or full-range speakers like the RCF ART 735-A MK5.

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Frequently asked questions

What is the peak power output of the ICOA SUB 15A?: The subwoofer is equipped with a Class D amplifier that delivers a peak power of 1600 watts. This allows for high-impact bass response and sufficient headroom for demanding live performances.
How deep does the bass frequency response go?: The ICOA SUB 15A is capable of producing low frequencies down to 36 Hz. This depth ensures a full-bodied sound suitable for bass-heavy genres and cinematic multimedia presentations.
What is the maximum Sound Pressure Level (SPL)?: The unit reaches a maximum SPL of 131 dB. This output level is high enough to provide significant low-end reinforcement in medium to large venue settings.
What is DynX DSP technology?: DynX DSP is LD Systems' proprietary digital signal processing technology. It provides optimsed presets and crossover settings to ensure the subwoofer performs with precision and stays protected at high volumes.
Does the ICOA SUB 15A support cardioid configurations?: Yes, the integrated DSP includes a cardioid mode. When used in arrays, this feature helps direct the bass energy toward the audience while cancelling out sound behind the subwoofer to keep the stage quiet.
What material is the cabinet made from?: The housing is constructed from rugged plywood. This material is chosen for its acoustic properties and its ability to withstand the physical demands of transport and live use.
Can I stack multiple units safely?: Yes, the cabinet features a secure stacking design. The indentations on the housing ensure that multiple ICOA SUB 15A units remain stable when placed on top of one another.
What type of amplifier is used in this model?: The subwoofer uses a highly efficient Class D amplifier. Class D technology is preferred for PA equipment because it provides high power output with minimal heat generation and reduced weight.
What applications is the ICOA SUB 15A best suited for?: It is designed for DJs, live bands, and multimedia presentations. Its versatile DSP and high SPL make it a flexible choice for both mobile entertainers and fixed event spaces.
Are there adjustable crossover frequencies?: Yes, the DynX DSP allows for customizable crossover presets. This makes it easy to align the subwoofer's frequency range with various sizes and brands of full-range PA speakers.
How does the ICOA SUB 15A compare to the QSC KLA181?: While the QSC KLA181 is a larger 18-inch subwoofer, the ICOA SUB 15A offers a more portable 15-inch form factor. The LD Systems model provides modern DSP features like cardioid mode which may not be present on all older 18-inch designs.
Is this subwoofer suitable for use with RCF ART series speakers?: Yes, the ICOA SUB 15A can be used as a low-end extension for speakers like the RCF ART 735-A MK5. The adjustable DSP settings allow users to match the crossover point for a balanced system sound.