Optimal Audio Sub 15


15″ High-capacity sub-bass speaker

  • Max Power: 2000watts
  • Low frequency boost: 45 Hz to 150 Hz
  • High power handling
  • Robust Low-Frequency Bass Enhancement


Availability: On backorder


The Optimal Audio Sub 15 is a compact yet high-performing 15″ subwoofer, built for scenarios that require enhanced impact and low-frequency performance across the Optimal Audio loudspeaker range.

It houses a 15″ Driver in a plywood bass-reflex cabinet, designed to optimize performance. Despite its compact design, it can deliver a peak sound pressure level (SPL) of 135dB. The Optimal Audio Sub 15 can be either ground-stacked or flown using built-in M8 inserts.

The driver is safeguarded by a durable, perforated steel grille, and the base is fitted with rubber feet to prevent unwanted movement. The Sub 15’s enclosure is made from plywood and coated with a black textured paint.

When integrated with Zone and WebApp, the system setup and user control become straightforward and user-friendly. The system can also be expanded with ZonePad wall controllers.


Colour Options


Woofer Size

15 inch

Power (RMS)

500 watts

Power (Max)

2000 watts


8 ohms

Frequency Response

45 – 150 Hz

Dimensions (WxHxD)

716 x 443 x 480 mm


Product Sheet


Recently Viewed



My Cart