DAPAudio PA180, Руководство пользователя

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9
Input Connection
Microphones
The PA180 is equipped with 4 mic inputs. They can be used with unbalanced low impedance devices
Balanced LO Z Microphone
May also be connected to the unbalanced input
We advise you to use FL0215, FL023 or FL026 unbalanced mic cables from Dap Audio
Priority paging:
The amplifier features a transistorized circuit, which automatically mutes the other inputs and allows
microphone #1 to talk over for special or emergency announcements. This electronic switch is operated
when an audio signal comes in at the mic1 input eg. from a microphone.
4 , 8 , 16 Connection
1) The total impedance of the speakers connected must correspond to that selected on the amplifier's output
terminals.
2) The sum of the power capacities of the speakers must be no lower than the amplifier's power capacity.
3) The length of the connecting cables must be short as possible; use a suitable cable diameter.
25V, 70V, 100V Connection
1) Each speaker must be equipped with a line transformer with an input voltage equal of the line voltage
used.
2) The sum of the power capacities of the speakers must not exceed the output power capacity of the
amplifier.
3) The length of the connecting cables must be short as possible; use a suitable cable diameter with
sufficient class II isolation.
NOTE : Before you press the ON button, be sure to that the volume control is set to its minimum.
Low Impedance Speaker Output: 4 / 8 / 16
The low impedance 4 / 8 / 16 terminal is for connecting one or more large-output speakers, when
constant-voltage speaker systems are unnecessary or the distance between the amplifier and the speakers
is below 50m.
The total speaker load impedance must be matched to the output impedance (4
/ 8 / 16 ) of the
amplifier for the most efficient power-transfer.
Be sure that total impedance of speakers is above 4
/ 8 / 16 however; do not raise the amplifier’s
output power above the allowable input power of the speaker. If the amplifier’s output power should be
raised above the maximum, the speakers could be damaged.