Tecnare Sound Systems IBZA Series, Руководство по эксплуатации

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Operation Manual
IBZA Series | rev.
2.5
14
2.5 Recommended Speaker Cables
Choosing the right wire gauge for your installation is utmost importance to ensure you will
get the maximum potential of your system.
The two primary things resistance affects in the amplifier-to-loudspeaker connection are:
insertion loss and damping factor, both of which are dependent upon cable resistance. Too
small a cable section will increase both its serial resistance and its capacitance; this reduces the
electrical power delivered to the loudspeaker and can also induce response (damping factor)
variations.
INSERTION LOSS
Insertion loss is the measure of the loss of load power at the speaker due to excessive
resistive losses of the cable or any additional component attached between the amplifier and
the loudspeaker. We typically express this loss in decibels (dB) using the following formula:
20 log
Rload
IL
Rload Rcable
 
= •
 
+
 
DAMPING FACTOR
Damping factor is a ratio of rated loudspeaker impedance (ZL) to the source impedance
(Zs). In this case our source impedance is ( Ramplifier).
Damping Factor = Z
L
/Z
S
The table below indicates the cable valour recommended by Tecnare
®
.
Recommended maximum length
cable cross-section
8 Ω 4 Ω 2 Ω
mm² SWG AWG m ft m ft m ft
2,5 15 13 30 100 15 50 10 33
4 13 11 50 160 25 80 17 53
6 11 9 74 240 37 120 25 80
10 9 7 120 390 60 195 40 130