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Power and acoustic pressure
How loud a speaker is able to play and still sound good is completely
dependent on the signal it has to reproduce. So, in practice, you cannot
dene an unequivocal level for use in comparing different speakers.
Obviously, lots of pure, undistorted output
from a large amplier is better than a dis-
torted signal from a small amplier stretched
beyond its capacity. The signal from a distort-
ing (clipping) amplier contains much more
high-frequency information than an undis-
torted signal, and therefore puts a heavy
strain on the treble unit. Consequently, speak-
ers are most often damaged by small ampli-
ers having to work too hard - and very rarely
by large ampliers, which are practically run-
ning idle.
It is worth noting that when the tone controls
are turned above the neutral setting this sig-
nicantly burdens both speakers and ampli-
er. On a good sound system tone controls
should only be used to compensate for poor
recordings and not to permanently compen-
sate for weaknesses elsewhere in the system.
So, DALI recommends that the tone controls
generally be set to the neutral position, and
you achieve your desired sound image through
correct positioning of the speakers.
Ensuring that you keep the volume low enough so the sound remains clear
and undistorted will minimise the strain on both speakers and amplier.
Remember that tone controls are only intended for temporary compensation.
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