Chapter 8: Speaker Application Tables; How To Use This Section; All Speakers; Ceiling Speakers - Toa BS-1030 User Manual

TOA Electronics Speaker Guide

Chapter 8: Speaker Application Tables

How to Use This Section

This section is intended to serve as a quick reference to speed and ease system design. Keep in
mind the following points to ensure best use of the tables.

All Speakers

Speaker height is relative to listener height. If the value for Height Above Listener is 2, that
means the speakers are placed 2 ft above the expected ear level of the listeners.
Coverage Area and Spacing recommendations are based on an adjusted estimate of coverage
(averaged over the frequency range 1–4 kHz) that accounts for both speaker dispersion and lis-
tener distance relative to the speaker. This may make the numbers appear smaller than those
found in other design guides but they will more accurately reflect real-world performance.
Maximum On-Axis SPL figures are based on operation at the highest transformer tap. Pink
noise power capacity is used for speakers without transformers.

Ceiling Speakers

Spacing recommendations for ceiling speakers are based on the radius of the adjusted coverage
area (as described in Sound System Engineering) except that in this guide, the term Edge to Center
is used to describe the condition when the edge of one speaker's coverage overlaps up to the
center of the next speaker's coverage (center to center spacing in Sound System Engineering).
Ceiling
height (h)
Speaker
Ceiling
Coverage
angle
Floor
34
Ear
height (l)