L-Acoustics - SB15M
The L-Acoustics SB15M is a compact 15-inch passive subwoofer built for permanent installation in venues requiring high-output bass reinforcement from a moderate-footprint enclosure, with selectable omnidirectional or cardioid low-frequency directivity.
Specifications
- Transducer: 1 x 15-inch cone driver
- Acoustical load: Bass-reflex with L-VENTS laminar venting
- Maximum SPL: 137 dB (with LA2Xi bridge mode, LA4X, LA8, or LA12X)
- Low frequency limit: 40 Hz (-10 dB)
- Nominal impedance: 8 ohms
- Directivity: Omnidirectional or cardioid (via dual-subwoofer DSP configuration)
- Dimensions (H x W x D): 580 x 429 x 520 mm (22.8 x 17.3 x 20.5 in)
- Weight: 36 kg / 79 lb
- Cabinet material: Premium-grade Baltic birch plywood
- Finish options: Dark grey-brown (Pantone 426 C), pure white (RAL 9010), custom RAL on request
- Front grille: Coated steel with acoustically neutral 3D fabric
- Connectors: 2 x 4-point speakON
- Rigging: Two handles, coupling bars, locking tabs, 35 mm pole socket
- IP rating: IP55
- Compatible amplifiers: LA2Xi (bridge mode), LA4X, LA8, LA12X
Applications
The SB15M suits fixed installations in theatres, houses of worship, conference centres, and live performance venues where moderate cabinet size must coexist with high headroom. Cardioid configuration, achieved by pairing two units with appropriate DSP presets, reduces low-frequency energy behind the subwoofer array and improves clarity on stage.
Frequently asked questions
How does cardioid mode work on the SB15M?
Cardioid configuration is achieved by combining two SB15M units with specific DSP presets in an L-Acoustics amplified controller. This arrangement reduces rear bass radiation while maintaining full output in the audience area.
What is the difference between the SB15M and larger L-Acoustics subwoofers?
The SB15M is a single 15-inch driver with a maximum SPL of 137 dB and a low-frequency limit of 40 Hz. It is positioned between the ultra-compact SB10 family and the high-power 18-inch SB18 series, offering a balance of output and cabinet size for mid-scale permanent installations.
Is the SB15M weatherproof?
Yes. The SB15M carries an IP55 rating, providing protection against dust and water jets, suitable for covered outdoor and semi-exposed permanent installations.
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.
-
Shipping Information
Use this text to answer questions in as much detail as possible for your customers.
-
Customer Support
Use this text to answer questions in as much detail as possible for your customers.
-
FAQ’s
Use this text to answer questions in as much detail as possible for your customers.
-
Contact Us
Use this text to answer questions in as much detail as possible for your customers.
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.