User manual

4.7. NOTES ON THE POWER OF THE AMPLIFICATION 4. Sound design with AXIOM
value and peak value ratio) of 6 dB. For common applications which require both a high power and a
high reliability level, it is advisable to use power amplifiers with an output rating equivalent to the AES
power rating of the enclosures. This ensures that the enclosures will operate within their thermal limit
specification. For applications where the user desires to take advantage of the full applicable power
of the enclosures, it is possible to use amplification with output power ratings equal to the programme
output rating of the enclosures. In this configuration, the full capacity of the system to handle transient
power is utilised, however it will be necessary to constantly monitor and regulate the system very care-
fully in order to avoid overloading the speakers. The limiter protection of the processor is always active,
however, and will prevent signals from arriving to the enclosures which have a long duration and power
in excess of the handling spec of speakers, as long as the voltage gain of the amplifiers used is 32dB.
For effective protection of the transducer components, it is necessary to use
amplification with a voltage gain of 32dB.
For effective protection of the transducer components, it is necessary to use amplification with a
voltage gain of 32dB, but it remains necessary to respect the physical limits of the loudspeakers. In
addition to power handling considerations tied to the thermal limits, it is necessary to avoid that the
loudspeakers be subjected to signals which could cause them to exceed their mechanical limits or their
applicable frequency limits. In practice, it is possible to damage a loudspeaker with a power well below
its AES applicable power rating if it is required to reproduce a distorted signal at a low frequency that
causes a cone excursion beyond the physically consented limit.
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