
ALPHAX S18
Deep, controlled cinema bass in a low profile.
A passive low-profile cinema subwoofer with a single 18″ LF driver covering 30 Hz – 200 Hz, rated at 800 W continuous and 3200 W peak, reaching 122 dB max SPL.
- 1 × 18″ LF driver for deep cinema low end
- 30 Hz – 200 Hz frequency response
- 800 W continuous / 3200 W peak at 8 Ω
- 122 dB max SPL with 99 dB sensitivity
- Low form factor design for flexible placement
- Multi-layer plywood with 2 × Neutrik Speakon NL4
Applications
- Cinemas
- Private Cinemas
- Home Theatres
- Screening Rooms
Why it matters
Why ALPHAX S18
Tight, impactful low end that fits into tight installation spaces
- 122 dBMAX SPL
- 30 – 200 HzFREQUENCY RESPONSE
- 800 WCONTINUOUS POWER
- 99 dBSENSITIVITY
- 47 kgNET WEIGHT
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Low form factor
A low-profile cabinet fits tight spaces behind and around the screen.
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18″ LF driver
A single high-output 18″ driver brings effects and music to life.
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Down to 30 Hz
30 Hz – 200 Hz response delivers tight, controlled cinema low end.
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Serious headroom
800 W continuous and 3200 W peak handling into 8 Ω.
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High output
Up to 122 dB max SPL with 99 dB sensitivity.
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Built for install
Black multi-layer plywood with 2 × Neutrik Speakon NL4 connectors.
Built for the cinema
A solid low-frequency foundation for cinemas, private cinemas, home theatres and screening rooms.
- Cinema subwoofer
Cinema bass down to 30 Hz
A high-output 18″ LF driver covers 30 Hz – 200 Hz, giving tight, controlled low end that brings effects and music to life.
- 1 × 18″ LF driver
Impact with headroom
Rated at 800 W continuous and 3200 W peak into 8 Ω, it reaches up to 122 dB max SPL with 99 dB sensitivity.
- 800 W / 3200 W
- 99 dB sensitivity
Fits tight installation spaces
A low form factor multi-layer plywood cabinet allows flexible placement where space is limited.
- Multi-layer plywood
- 2 × Speakon NL4
Technical data
Specifications
Electroacoustic
- Drivers
- 1 × 18″ LF
- Frequency Response
- 30 Hz – 200 Hz
- Continuous Power
- 800 W
- Peak Power
- 3200 W
- Impedance
- 8 Ω
- Sensitivity
- 99 dB
- Max SPL
- 122 dB
- Connectors
- 2 × NL4 speakon
Design
- Type
- Low form factor Cinema Subwoofer
- Cabinet Material
- Multi-Layer Plywood
- Finish
- Black
Power & Physical
- Dimensions
- 530 × 450 × 860 mm (W × D × H)
- Net Weight
- 47 kg
Low-profile subwoofer for cinema screens
ALPHAX S18 is a low-profile cinema subwoofer, designed for cinemas, private cinemas and home theatres. Our team can help with system design, product selection and a demonstration.





