Loudspeakers Line Out - Optimus AXD-30 Operating Instruction

6.8. Loudspeakers line out

The loudspeakers line out is effected by means of a transformer that
has low impedance outputs (4Ω – 8Ω – 16Ω) and high impedance
outputs (50 – 70 – 100V).
The connection must be made between terminal "0" and the terminal
corresponding to the appropriate impedance or voltage.
6.8.1. Low impedance
One of these three outputs will be used when the loudspeakers do not have a line transformer, and it will be selected
in such a way that the loudspeaker line impedance is the same as the impedance of the amplifier output contact
6.8.2. High impedance
When working with the 50, 70 and 100V lines, it should be remembered that:
- The loudspeakers to be connected must have a line transformer.
- The total connected power will be the sum of the power absorbed by the loudspeakers and this must be between
50% below and 20% above the rated power of the amplifier.
- The power absorbed by a loudspeaker with a transformer is indicated on its terminals. This power is on the 100V
line. If the transformer is connected to the 70V line, it will absorb half the indicated power, and if it is connected to
the 50V line, it will absorb a quarter of this power. A 30W transformer will absorb 15W if it is connected to the 70V
line and 7.5W if it is connected to the 50V line.
Figure 17
AXD-60 (See Fig. 17)
A. Total input power 60W.
Power absorbed by each 10W transformer = 10W.
B. Total input power 60W.
Power absorbed by each 10W transformer = 5W.
C. Total input power 60W.
Power absorbed by each 10W transformer = 2.5W.
AXD-120 (See Fig. 18)
A. Total input power 120W.
Power absorbed by each 20W transformer = 20W.
B. Total input power 120W.
Power absorbed by each 20W transformer = 10W.
C. Total input power 120W.
Power absorbed by each 20W transformer = 5W.
AXD-240 (See Fig. 19)
A. Total input power 240W.
Power absorbed by each 40W transformer = 40W.
B. Total input power 240W.
Power absorbed by each 40W transformer = 20W.
C. Total input power 240W.
Power absorbed by each 40W transformer = 10W.
AXD-30/60/120/240 v1.3
AXD-30, AXD-60, AXD-120, AXD-240
Figure 16
Figure 18
Figure 19
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