Speaker cables contribute to load impedance; choose cables whose resistance is appropriate for the load and cable length. Vocia End-of-Line sensing devices monitor out-of-band high frequency tones (21 - 23kHz) to detect speaker line integrity. If using these devices with long speaker cables, choose low capacitance cables so that ELD-1 tones are not excessively attenuated. See the ELD-1 Output Fault Detection section for requirements when using ELD-1s.
The following table must be used when deciding which End of Speaker Line input is required.
|
Amplifier Power |
|
Speaker Circuit |
Less than 100 Watts |
100 Watts or greater |
4Ω |
Low |
Low |
6Ω |
Low |
Low |
8Ω |
Low |
Low |
25 Volt |
Low |
Low |
70 Volt |
Low |
Low |
100 Volt |
Low |
High |
