The only relevant figure which can be placed on the maximum power input to any system which is to be used for normal� programme material, therefore, is one which takes into account all the factors mentioned. This figure can be termed peak� programme power and is directly related to the maximum power that should be delivered by the driving amplifier. In the� case of the SP1/2E, 100 watts is quoted, and is meant to cover normal programme material that has a spectrum where
the peak levels at low and high frequencies are well below the mid-band levels, thus providing the necessary protection at� low and high frequencies.� One complication does arise for bass guitar, organ pedal notes and electronic music reproduction. In these cases it will� be possible, to apply the full 100 watts at low frequencies, which would result in mechanical damage. Amplifier� specifications do not always specify the peak output power.� �Final choice of a suitable amplifier rests with the user who is well advised to seek guidance of an authorised Spendor� dealer. Care should be taken to ensure that whatever the amplifier rating, the input to the loudspeaker does not exceed� the recommended peak value.� �
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