LDA BA-2250, User Manual

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Appendix A: Cable section for speaker lines
This table shows the maximum advisable lenghts for 100V speaker lines. The type of cable
used to calculate them is a copper conductive twin-lead type. This can be used as planification
guide, although the appropiate final calculations for each situation are the electrician's
responsibility.
This table shows the output power of common amplification channels of 100V constant
voltage in RMS. The maximum lenght for 70V lines is half of the ones in the table.
Section Maximum lenght with a 5% power loss
AWG  mm
mm
2 60Wrms 120Wrms 240Wrms 480Wrms 960Wrms
6 4,11 13,3 3260 1630 810 405 200
7 3,67 10,6 2600 1300 645 320 160
8 3,26 8,35 2050 1025 510 255 130
9 2,91 6,62 1625 810 405 200 100
10 2,59 5,27 1300 645 320 160 80
11 2,3 4,15 1020 510 255 130 65
12 2,05 3,31 810 405 200 100 50
13 1,83 2,63 645 320 160 80 40
14 1,63 2,08 510 255 130 65 35
15 1,45 1,65 405 200 100 50 25
16 1,29 1,31 320 160 80 40 20
17 1,15 1,04 255 130 65 35 15
18 1,02 0,82 200 100 50 25 13
Table 2: Cable section for 100V lines
Key:
•
AWG (American Wire Gauge)
•
mm: Cable diameter in milimeters

•
mm
2
: section cable area in square milimeters
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