L-Acoustics - KS28
The L-Acoustics KS28 is a reference high-power subwoofer designed for large-scale live sound reinforcement. Loaded with dual 18-inch neodymium cone drivers and the proprietary L-VENTS laminar venting system, it delivers extremely high output with low turbulence noise, suitable for concerts, festivals, and touring rigs.
Specifications
- Maximum SPL: 143 dB peak at 1 m, half-space
- Low Frequency Limit: 25 Hz (-10 dB)
- Transducers: 2 x 18-inch neodymium cone drivers
- Nominal Impedance: 4 ohms
- Acoustical Load: Bass-reflex with L-VENTS technology
- Directivity: Standard or cardioid configurations
- Dimensions (L x W x H): 1340 mm x 550 mm x 719 mm
- Weight: 79 kg
- IP Rating: IP55
- Connector: 4-point speakON
- Recommended Amplifier: LA12X amplified controller
Applications
The KS28 is used in touring, festivals, and fixed installation contexts where very high sub-bass output is required. Cardioid configuration reduces rear spill on stage. Ground stacking and flown rigging are both supported via its 2-point rigging system.
Standards and compliance
IP55 rated for resistance to dust ingress and water jets. Cabinet constructed from premium Baltic beech and birch plywood to touring-grade standards.
Frequently asked questions
What directivity options does the KS28 support?
The KS28 operates in either standard omnidirectional mode or cardioid configuration. Cardioid mode reduces rear-directed sound, which helps control low-frequency energy reaching the stage.
What amplifier is recommended for the KS28?
L-Acoustics recommends the LA12X amplified controller for driving the KS28.
Is the KS28 suitable for outdoor use?
Yes. The KS28 carries an IP55 rating, confirming resistance to dust and water jets, making it suitable for outdoor festivals and touring environments.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
What is your return policy?
All refunds and returns are determined by the manufacturer's terms of sale. Change-of-mind refunds are not accepted, but all valid warranty claims will be managed by AKA Acoustics in compliance with consumer law.
How long will it take to receive my order?
Freight lead times will be provided upon order confirmation. Standard items typically ship within 4–6 weeks, while custom orders may take 6–12 weeks.
Is my payment information secure?
Yes, all payments are securely processed through Stripe and are protected under their Terms of Service. AKA Acoustics do not store any payment information ourselves.
How are freight costs calculated?
Freight costs are determined at the time of quotation to ensure accurate pricing based on your specific order. For any questions, please email sales@akaacoustics.com
How can I contact support?
For account inquiries, email accounts@akaacoustics.com. For order support, email sales@akaacoustics.com.