Optimal Audio Sub 18
High-power sub-bass loudspeaker
Compact 18" Subwoofer
The Optimal Audio Sub 18 is a flagship high-output passive subwoofer, engineered to deliver deep, powerful bass for large-scale commercial and live environments. Ideal for bars, event venues, and high-energy spaces, it provides exceptional low-frequency impact and enhances full-range systems for an immersive audio experience.
Description
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.
Sub 18 Features
- Compact size
- Powerful sub-bass support down to 42Hz (± 3dB)
- High power handling
Applications for the Sub 18
Resources & Downloads
Data sheets, manuals and resources for the Sub 18
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Quick Specs
- TYPE
- Sub-bass loudspeaker
- FREQUENCY RESPONSE (with preset)
- 42Hz-150Hz +/- 3dB, -10dB @ 36Hz
- DRIVERS
- LF: 18” (460mm)
- RATED POWER
- 800W (AES) 3200W (peak)
- NOMINAL IMPEDANCE
- 8Ω
Technical Specifications
- TYPE
- Sub-bass loudspeaker
- FREQUENCY RESPONSE (with preset)
- 42Hz-150Hz +/- 3dB, -10dB @ 36Hz
- 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
- PROTECTIVE GRILLE
- Perforated steel
- CONNECTORS
- Euroblock type
- PIN CONNECTIONS (INPUT)
- 4 pin Euroblock with link out
- FITTINGS
- 12x M8, Inset bolts
- DIMENSIONS
- (W) 756mm x (H) 530mm x (D) 544mm (W) 29.76” x (H) 20.86” x (D) 21.42”
- WEIGHT
- 47.0kg (103.6 lbs)
- ACCESSORIES (available separately)
- M8 Eye Bolt
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.
- Compact size
- Powerful sub-bass support down to 42Hz (± 3dB)
- High power handling
| TYPE | Sub-bass loudspeaker |
| FREQUENCY RESPONSE (with preset) | 42Hz-150Hz +/- 3dB, -10dB @ 36Hz |
| 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 |
| PROTECTIVE GRILLE | Perforated steel |
| CONNECTORS | Euroblock type |
| PIN CONNECTIONS (INPUT) | 4 pin Euroblock with link out |
| FITTINGS | 12x M8, Inset bolts |
| DIMENSIONS | (W) 756mm x (H) 530mm x (D) 544mm (W) 29.76” x (H) 20.86” x (D) 21.42” |
| WEIGHT | 47.0kg (103.6 lbs) |
| ACCESSORIES (available separately) | M8 Eye Bolt |
About Penguin Media Solutions
Penguin Media Solutions is a professional audio, video, and lighting design, installation, and maintenance company based in Brighton, UK. As an authorised Martin Audio dealer, we provide high-performance AV systems for commercial venues, hospitality, and event spaces across Brighton, London, and South-East England.
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