
6
PA8506-V
|
VES Compact System
PA8500-VES | Voice Evacuation System
System Manual | 2014
UK
5. CONNECTIONS ANd SIZING
5.1 CONNECTING SPEAKEr UNITS
Examples.of.connection.of.loudspeaker.lines.to.the.output.zones.(LOUDSPEAKER.OUTPUTS)..For.details.concerning.the.operating.mode.of.
the.system,.refer.to.the.Section.on.“Set.>.AMPLIFIER.MODE”.(point.8.7.5).
Warning! Before connecting the lines it is advisable to set the operating mode correctly in relation to the configuration of the system.
reference should be made to the heading “set > AMPLIFIEr MOdE” (par. 8.7.5).
5.1.1
.
100V 250W system - 1 off PA8506-V
Install only speaker units with 100 V constant
voltage line-repeating coil.
Sizing - Check of the loading power of the loudspeaker lines
Measure.the.impedance.of.each.speaker.line.with.a.1.kHz.impedance-measuring.device:
-.Impedance.of.Line.L1A,.zone.1:.ZL1A.(
W
)
-.Impedance.of.Line.L1B,.zone.1:.ZL1B.(
W
)
-.Impedance.of.Line.L2A,.zone.2:.ZL2A.(
W
)
- ....
-.Impedance.of.Line.L6B,.zone.6:.ZL6B.(
W
).
Calculate.the.power.load.absorbed.by.each.line.with.a.100.V.amplifier.output:
-.Loading.power.of.Line.L1A,.zone.1:...PL1A.=.10000/ZL1A.(W)
-.Loading.power.of.Line.L1B,.zone.1:...PL1B.=.10000/ZL1B.(W)
-.Loading.power.of.Line.L2A,.zone.2:...PL2A.=.10000/ZL2A.(W).ecc.
The.sum.of.the.power.absorbed.by.the.lines.connected.to.all.the.zones,.from.Z1.to.Z6,.must.be.lower.than.250.W:
.
P.tot. Z1÷Z6: PL1A + PL1B + PL2A + PL2B + ....... + PL6A + PL6B = < 250W
Note:
.
If.it.is.planned.to.use.the.system.to.broadcast.background.music.with.a.greatly.attenuated.volume.for.some.zone.outputs.(zone.volume.
-15.dB.or.-9.dB),.it.is.advisable.to.connect.a.speaker.load.of.at.least.20.W.to.these.zones,.in.order.to.improve.stability.of.the.diagnostics.of.the.
speaker.lines.
Example:.PL1A.+.PL1B.=.PZ1.>.20W
Setting.the.system.operating.mode:..
“NO EXT. AMPLIFIEr”
For.details.about.programming.this.operating.mode,.refer.to.the.“
set > AMPLIFIEr MOdE
”.(par..8.7.5).
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