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7. POWER SUPPLY (PSU)
The power supply of the SPE Expert 1.3K-FA, unique in its category, is switching with a
PFC (Power Factor Correction) that allows a drastic reduction of the harmonic
components in the mains in accordance with IEC555-2, that consists of two sources.
The first powers all the electronic circuits, the PA excluded.
The second powers only the PA. Its output voltages are 48 VDC (MAX Pout), 38 VDC
(MID Pout), and 32 VDC (LOW Pout).
This design was adopted as it provides maximum efficiency and therefore less heat to
dissipate.
The power supply meets the following applicable standards: UL60950-1, TUV
EN60950-1, EN55022, EN61000-3-2,-3, EN61000-4-2,3,4,5,6,8,11; ENV50204,
EN5502.
Since the amplifier is sold all over the world, the power cord does not come with any
mains plug. Some SPE distributors will fit the plug appropriate to your domestic supply
network prior to purchase. Should it be necessary to rewire the plug due to relocation in
a different country, please ask for advice from a qualified electrician.
To fit the plug (20 A minimum rating below 120V AC, 10A minimum rating above 120V
AC) proceed according with the following fig.
You should observe all precautions in accordance with national legislation.
The amplifier is supplied by a power supply that automatically adapts between 100 and
255 VAC, 47-63 Hz.
In some particular cases, mains that are 100 to 120 VAC, the power in MAX may be
reduced somewhat.
In the case of a "FATAL" alarm, the power supply is locked. To restore the linear, switch
to OFF for about 30 seconds, via the rear switch, then back ON.
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