


Sub 18
High-power sub-bass loudspeaker
Features
- Compact size
- Powerful sub-bass support down to 42Hz (± 3dB)
- High power handling
Cafes
Bars/Restaurants
Wedding Venues
Hotels
Education Facilities
Houses of Worship
Fitness Studios
Sub 18 is a powerful, high-performance, passive, 18” subwoofer designed for applications that call for increased impact and low frequency performance across the Optimal Audio loudspeaker range.
The 18” (460mm) driver is loaded into a plywood bass-reflex cabinet that maximises performance, with a peak SPL of 136dB, while taking up minimal space. Sub 18 can be used on the ground or flown using integral M8 inserts.
An impact-resistant perforated steel grille protects the driver, and rubber feet on the base resist movement. The Sub 18 enclosure is constructed from plywood and finished in black textured paint.
When teamed with Zone and WebApp, system set up and end user control is simple and intuitive, and can be further supplemented by ZonePad wall controllers.
TYPE | Sub-bass loudspeaker |
FREQUENCY RESPONSE (with preset) | 42Hz-150Hz +/- 3dB |
DRIVERS | LF: 18” (460mm) |
RATED POWER | 800W (AES) 3200W (peak) |
NOMINAL IMPEDANCE | 8Ω |
SENSITIVITY (1W/1m) | 101dB (Half Space) |
MAXIMUM SPL | 130dB (cont) 136dB (peak) (Half Space) |
ENCLOSURE | Plywood |
FINISH | Black Textured Paint |
PROTECTIVE GRILLE | Perforated steel |
CONNECTORS | Euroblock type |
PIN CONNECTIONS (INPUT) | 4 pin Euroblock with link out |
FITTINGS | 12 x M8, Inset bolts |
DIMENSIONS | (W) 756mm x (H) 530mm x (D) 544mm |
WEIGHT | 47.0kg (103.6 lbs) |
Optimal Audio Sub 18 Subwoofer FAQs
What types of venues benefit from the Sub 18?
The Sub 18 is perfect for venues where powerful, high-performance impactful low frequencies are essential. This includes bars and restaurants wanting background music, fitness studios with high-energy audio, hotels and houses of worship hosting live performances or events.
Can the Sub 18 subwoofer be used in both large and small venues?
Yes, the Sub 18 subwoofer is designed for both small and large venues. Thanks to its powerful bass output and compact design, whether you’re equipping a small café or outfitting a large performance space.
Is the Sub 18 easy to integrate into existing audio systems?
The Sub 18 is designed to seamlessly integrate with the Optimal Audio ecosystem of controllers, amplifiers and loudspeakers. This makes it easy to create a sound system tailored to the venue’s requirements.
What tools are available to optimise the Sub 18 for specific venue requirements?
Sub presets are available with EQ and limiters in SmartAmp amplifiers, and Zone controllers with WebApp one-click presets. This allows for quick and easy system setup for integrators that meet the venue’s specific needs.
What are the mounting options available?
The Sub 18 can be placed on the ground using rubber feet or suspended with M8 inserts for flown installations, offering flexible mounting options for different setups.