February 2016
Intermediate to advanced
216 pages
14h 38m
English
Content preview from Newnes Audio and Hi-Fi Engineer's Pocket Book, 3rd Edition
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Transformer tappings A speaker with a particular wattage
tapping will take the same power and deliver the same sound
output from the 100 V line output of any amplifier irrespective
of its power rating. The only difference is that a large power
amplifier will supply more speakers than a small one. Higher
volume can be obtained by increasing the power tapping on the
speaker transformer. Note that a 100 V speaker tapping will
take about half the power when operated from a 70 V line.
Care must be taken that all connections to the transformers are
phased so that all speakers working in the same area are in
phase.
Table of transformer ratios ...
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