HK Audio L9-118SA
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Manufacturer Information
HK Audio
https://www.musicandsales.com
info@musicandsales.com
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Algam SAS
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LINEAR 9: HK Audio's range tailored for demanding performances
Designed and manufactured in Germany, the LINEAR 9 series represents the top tier of the LINEAR family at HK Audio. The goal is clear: to offer a system ready for rental and event use, capable of withstanding operational constraints while ensuring a consistent response from one setup to another. The LINEAR 9 118 Sub A fits this logic with a modular approach, deployment optimization, and sonic coherence to build a scalable system according to venue size and desired sound pressure level.For performances, touring, clubs, and events
The HK Audio LINEAR 9 118 Sub A is aimed at contractors, technicians, stage managers, and touring crews who need an active subwoofer that is easy to integrate, quick to adjust, and reliable day-to-day. It is also well suited for clubs, multipurpose venues, and corporate events where a present but clean bass is expected, without overwhelming the stage or complicating setup.Its compactness facilitates transport, storage, and setup, and its design allows pairing with various satellites to compose a powerful front-of-house system, a bass extension for an existing system, or a modular configuration that adapts to the venue. In practice, it is a low-frequency reinforcement tool designed to keep up with your pace: rigging, soundcheck, recall of settings, and moving on.
Network, DSP, and cardioid presets: a workflow designed to save time
Centralized settings and system consistency
Thanks to networking, each speaker can be configured and controlled remotely via a dedicated app. You can access DSP parameters to harmonize the overall sound, adapt the response to the venue, and save settings. This approach provides real comfort during shows: you standardize your workflow, reduce last-minute "by ear" adjustments, and achieve better repeatability from event to event.A cardioid mode easy to implement
The 118 Sub A includes cardioid presets that simplify managing low-frequency energy. The benefit is immediate on stage and in live contexts: limiting what "bleeds" into microphones, reducing bass buildup behind the system, and improving clarity. The result is a cleaner and more controlled bass sensation, particularly appreciated in reverberant rooms, compact stages, and configurations where sub placement strongly influences overall balance.Professional power supply and mains distribution via PowerCon-Link
The PowerCon connectors secure power supply in professional environments. The PowerCon-Link allows rational mains distribution from the subwoofer to the rest of the system: a tangible advantage to reduce cabling, speed up setup, and keep the stage neater. From a fleet management perspective, it is also an efficient way to industrialize cabling and limit connection errors during quick setups.Tour-grade construction and Class D amplification
The birch plywood enclosure and polyurethane coating are designed for intensive use: handling, loading, stacking, and transport stresses. The latest generation Class D amplification prioritizes efficiency and reliability while remaining consistent with current contractor needs: available power, DSP integration, and stable operation over time.Technical specifications
| Category | Soundsystem |
| Type | active subwoofer |
| Insert type | M20 |
| Amplification | Active amplified |
| Controls | volume, limiter, high pass filter switch, mute switch, low pass filter control, polarity switch, delay, equalization |
| Speaker diameter | 18" |
| DSP | Yes |
| Baseplate width | 20 mm |
| Frequency response | 42 Hz - X-over |
| SPL max | 129 dB |
| Speaker structure | multi-ply birch |
| Transport | 2 handles |
| Inputs | 2 x XLR, RJ45 |
| Outputs | 2 x XLR line out, RJ45 |
| Color | Black |
| Power output | 1100 W |
| Weight | 41.5 kg |
| Dimensions (mm) | 55 x 56 x 69 cm |
| Load type | compact "bass-reflex" design |
| PowerCon-Link output | powers four satellites or up to three additional subwoofers |
Questions frequently asked
Can the HK Audio L9-118SA operate in a cardioid configuration?
Cardioid presets are built into the DSP to better control low-frequency energy. This setup helps reduce bass levels behind the system, particularly towards the stage and microphones.
What power output and SPL level does this 18-inch subwoofer deliver?
The class D amplifier provides 1100 W, and the maximum specified level reaches 129 dB SPL. The 18-inch driver is loaded in a compact bass-reflex cabinet, with a response starting from 42 Hz up to the cutoff frequency.
What audio and network connections are available?
Two XLR inputs, two XLR line outputs, as well as RJ45 input and output ports are included. The network connection allows remote control and configuration via the dedicated app.
Can speakers be powered from the PowerCon-Link output?
The PowerCon-Link output can power up to four satellites or three additional subwoofers. This secure power distribution simplifies cabling for a sound reinforcement system.
Is the L9-118SA suitable for touring and live performances?
Its birch plywood enclosure is coated with polyurethane designed to withstand transport and handling stresses. With two handles and weighing 41.5 kg, its dimensions are 55 x 56 x 69 cm. An M20 socket allows mounting a satellite speaker on a pole.



