The Optimal Audio Sub 6 in white is a compact 6-inch passive subwoofer designed to extend low-frequency performance in distributed audio systems where space is at a premium. Sized to fit through a standard 595mm ceiling tile opening, it is ideal for ceiling-void or under-furniture mounting in hospitality, retail, and corporate environments where a white finish is required to match the surrounding decor.
6″
Driver · Custom with 2.5″ voice coil
250W AES
Power Handling · Continuous
118 dB
Peak SPL · Peak output
37 Hz
Low Frequency · At -10 dB
Features
Custom 6″ driver with 2.5″ voice coil for extended low-frequency output from a compact enclosure
Fits through a standard 595mm ceiling tile for concealed ceiling-void installation
MDF construction for controlled, tight low-end response
M8 threaded inserts for secure flying and mounting
Compatible with optional SB1 bracket for wall or ceiling mounting
White finish for installations where aesthetics demand colour-matched hardware
Designed to pair with Optimal Audio Cuboid satellite speakers
NoteThe Sub 6 is a passive subwoofer and requires an external amplifier. For integrated DSP and amplification within the Optimal Audio ecosystem, pair with a SmartAmp and Zone controller.
Specifications
| Driver | 6″ custom with 2.5″ voice coil |
| Type | Passive subwoofer |
| Power Handling | 250W AES |
| Peak SPL | 118 dB |
| Low Frequency Extension | 37 Hz (-10 dB) |
| Enclosure Material | MDF |
| Mounting | M8 threaded inserts, optional SB1 bracket |
| Colour | White |
| SKU | SUB6-W |





