It extends the low frequency operating range of the combined system down to 42Hz and can be used singly, stacked in omni or cardioid mode, or flown via integral M10 insets. It features a long-excursion 18” (460mm)/4” (100 mm) voice coil driver in a compact enclosure that has four reflex ports with a large frontal area to reduce turbulent air noise at very high levels.

The PI118 enclosure is constructed from durable plywood and finished in textured black paint. A perforated steel grille protects the driver, and the enclosure two ergonomic side handles.