LD Systems Icoa Sub 15 A

ICOA SUB: A Bass Reinforcement Designed for Modern Systems

The ICOA SUB 18 4 was designed to meet a simple need: to add solid, controlled bass to a sound system while improving overall clarity. By entrusting low frequencies to the subwoofer, the main speaker works more comfortably: less strain on its woofers, fewer constraints on transients, and a cleaner sound on vocals and instruments, even at higher levels.

Who Is It For and What Are Its Uses?

This 18-inch active subwoofer is aimed at DJs, bands, orchestras, singer-songwriters, event professionals, and venues that want a present low end without sacrificing clarity. It is also very suitable for conferences and multimedia presentations: the bass adds dimension to audio/video content while maintaining optimal intelligibility thanks to appropriate filtering.

DynX DSP, Cardioid Mode, and Settings: Control at the Service of the Mix

Useful Presets and a Crossover Adapted to Your System

The DynX DSP processing offers 4 presets to quickly adapt the subwoofer to your setup. You can select one of the three crossover frequencies (80, 100, or 120 Hz) to achieve a coherent blend with your main speakers, depending on their size and low-frequency response.

Time Alignment and Phase Management

For cleaner bass that is better "locked in" with the rest of the system, the ICOA SUB 18 4 allows you to change the polarity and adjust a Line Delay up to 10 m. This is especially useful when subs are not placed on the same plane as the tops or when stage layout requires offset placement.

More Power as Your Setup Grows, and Cardioid Mode

If your needs evolve, you can use multiple subs in parallel to increase coverage and sound pressure. With two ICOA SUBs, the preconfigured cardioid mode helps better control bass dispersion: by aiming one sub to the rear and activating the dedicated preset, you reduce energy sent behind the system while maintaining forward impact.

Technical specifications

Battery	No	Cutaway	No
Number of channels	2 channels	Speaker structure	wood
Bluetooth	No	Inputs	combo XLR/jack
Speaker diameter	18", 15"	Outputs	XLR
Number of speakers	1	Color	Black
EQ	No	Power output	600 W

Product type	Sound reinforcement subwoofer	Max SPL (peak)	133 dB
Type	Active	Protection circuits	limiter activation, excursion limiter, overload, overheating, overvoltage
Woofer/midrange diameter	18 "	Controls	encoder/button
Woofer diameter	457.2 mm	Indicators	LCD screen
Woofer magnet	Ferrite	Line inputs	2
Woofer brand	Custom	Line input connectors	XLR/6.35 mm combo jacks (balanced)
Woofer voice coil	4 "	Line outputs	2
Woofer voice coil (mm)	100 mm	Line output connectors	XLR
Amplifier	Class D	Power supply voltage	100 - 240 V
Power (RMS)	600 W	Max power consumption	675 W
Power (peak)	2400 W	Operating temperature	0 - 40 degC
Frequency response (-10dB)	29 Hz, depending on preset	Relative humidity	< 60%, non-condensing