b'TECHNICAL DATA|TYPES OF SYSTEM|100V LINE SPEAKERS 73100V Line SpeakersFor many applications, it is necessary to drive many speakersTheoretically, this allows a large number of speakers to be driven with a single amplifier, giving greater coverage to multiple roomsby one amplifier, so long as the overall power being tapped by or over a given area. Constant voltage systems (usually 100Vthe speakers is within the amplifiers output capacity (usually line) employ a transformer in the amplifier to convert the output90% of the amplifiers maximum rated output).to high impedance and a corresponding transformer in each speaker to tap off the required power from the amplifier. Standard 100V line set-upTotal tapped power: 80W100W 20W 20W 20W 20WAmpli\x1ferIn addition, the transformers in each speaker may have tappingsThe speaker output may also be varied using remote volume at different points along the primary coil, which effectivelycontrols, known as attenuators, but these should be considered draw different Wattages from the amplifier. For example, a 10Wto be at their maximum volume output when choosingspeaker may also have settings for 5W or 2.5W.an amplifier to drive the speakers.100V line set-up with multiple tappingsWired in parallel and tapped to 90% of the amplifiers max. power output100W Attenuator 15W Attenuator 20WAmpli\x1fer 0 - 20W 0 - 20W 5W 10W20Wmax. + 15W + 20Wmax. + 5W + 20W + 10W = 90WIf more speakers are required beyond 90% of the The slave amplifier is simply linked from the line output100V amplifiers maximum output, a slave amplifier of the main amplifier, to which another series ofmay be employed to drive these.speakers are then linked to, in the same way thespeaker are from the main amplifier.Extended 100V line set-upMain 4 speaker system withLine input MAINadditional 4 speaker set 20W 20W 20W 20Wand slave amplifier Line output 100WAmpli\x1ferSLAVE100W 20W 20W 20W 20WAmpli\x1fer'