The Optimal Audio Sub 15 is a 15-inch passive bass-reflex subwoofer built for commercial installations that demand serious low-frequency output. With 500W power handling and 135 dB peak SPL, it delivers the kind of bass impact required in larger bars, clubs, live venues, and event spaces where the Sub 6 and Sub 10 would not provide sufficient headroom.
Driver
15″
Woofer
Power Handling
500W
Continuous
Peak SPL
135 dB
Peak output
Design
Bass-Reflex
Ported enclosure
Features
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15″ driver with 500W continuous power handling for high-output bass reinforcement
15″ driver with 500W continuous power handling for high-output bass reinforcement
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Bass-reflex design for efficient, extended low-frequency response
Bass-reflex design for efficient, extended low-frequency response
✓
135 dB peak SPL suits larger venues, clubs, and event spaces
135 dB peak SPL suits larger venues, clubs, and event spaces
✓
Plywood enclosure for durability and low-resonance performance
Plywood enclosure for durability and low-resonance performance
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M8 threaded inserts for flexible rigging and mounting
M8 threaded inserts for flexible rigging and mounting
✓
Integrates with Optimal Audio SmartAmps and Zone controllers for complete system management
Integrates with Optimal Audio SmartAmps and Zone controllers for complete system management
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Black finish as standard
Black finish as standard
Specifications
| Driver | 15″ |
| Type | Passive subwoofer, bass-reflex |
| Power Handling | 500W |
| Peak SPL | 135 dB |
| Enclosure Material | Plywood |
| Mounting | M8 threaded inserts |
| Colour | Black |
| SKU | SUB15-B |
