Martin Audio Horizontal - 6dB coverage, WLX/WLXGS Wide, Horizontal coverage, 43Hz, 86Hz, 172Hz

For instance, an 8 high ground-based stack of WLX/WLXGS subwoofers will act like the top half of a 16 high stack.

It is possible to reach higher seating areas whilst retaining a tall vertical stack by electronically “tilting” the system - see later.

Note that flexible floors may actually absorb sound at some frequencies so the situation isn’t always so simple in practice.

Horizontal - 6dB coverage

The following table gives the approximate horizontal coverage angles of typical WLX/WLXGS arrays - ignoring boundary effects.

WLX/WLXGS Wide		Horizontal coverage
	43Hz	86Hz	172Hz
2	Wide	Wide	75º
4	Wide	75º	35º
8	75º	35º	17º
16	35º	17º	9º

Use wide arrays for long shots. Useful for long, narrow venues

Use narrow arrays for short, wide shots

Horizontal Boundary effects

A solid wall near an array will act as a reflector. This will cause a horizontal array to perform as if it were twice as wide, giving a useful low frequency boost accompanied by a narrower, more complex polar response.

All material © 2007. Martin Audio Ltd. Subject to change without notice.