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20. IEC mains inlet and integral fuse
21. Voltage selector 110/240Vac
22. Mono 6.3mm speaker jack outputs (4-16Ω only)
23. 100V speaker output terminals
24. Cooling Fans
Connection
The Adastra A-series mixer-amps and S-series slaves can drive EITHER 100V line OR 4-16Ω speakers.
Both types of speaker should NOT be connected together to the same amplifier.
100V Line Speakers
100V line speakers must be connected using the "100V" and "COM" screw terminals (23) on the rear panel.
All 100V line wiring should be run with double-insulated cable rated to the max current for the system.
For example, in a 250W system @ 100Vmax, 250W/100V=2.5A, so the speaker cable should be rated to 2.5A
minimum
Each speaker must be connected in a parallel chain and the total wattage for all speakers should not exceed 90%
of the amplifier's rated output. Please see the diagram below to show an example arrangement.
Rear Panel
25.
FM antenna connection
26.
OUTPUT – 2 x RCA line output
27.
LINE1 + LINE2 – 2 x RCA line inputs
28.
MIC1 + MIC 2 – 2 x balanced 6.3mm jack MIC inputs
29.
Phantom power switch (32V)
Cooling fans
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