Invisible Series
AT | ST Series
ST15


ST15
Subterranean
The ST15 is a landscape subwoofer for medium to large zones requiring high SPL. Its 15" compression band pass design delivers powerful bass, with durable aluminum and stainless steel construction for weather resistance. Designed for burial, it integrates discreetly into outdoor spaces, leaving only the hooded port visible.
Key Features
- All-copper toroidal transformer (70V models)
- Direct burial, compression bandpass subwoofer design
- Marine grade
- Available in a selection of standard or custom colors
- TAA Compliant
Specifications
SKU | Color
ST15
Speaker Woofer
(1) 15" (381mm) Aluminum
Frequency Response (+/- 3db)
20Hz - 120Hz
Sensitivity
91dB (2.83V/1m)
Enclosure
Aluminum
Nominal Impedance (Ohms)
4 Ohms or 70V
Dimensions (WxHxD)
16.5" x 16.5" x 22.5" (419.1mm x 419.1mm x 571.5mm)