DESCRIPTION
Multichannel amplifier with four output channels with independent volume control, 4 x 300 W max. 4 x 250
W RMS. 4-8 Ω low impedance output and 100, 75 and 25 V high impedance lines. Suitable for P.A. and
audio applications with different speaker zones which need independent volume control.
The preamp and mix stage has 4 balanced mic. inputs or selectable lines with Phantom power supply and
2 auxiliary line inputs.
Chimes and siren with volume control and TEL. PAGING telephone switchboard input.
Priority system in inputs, with maximum priority in the TEL. PAGING input and INPUT 1 through signal level.
And priority in INPUTS 2, 3 and 4 through contact closure.
It also has LED indicators to see how it is working and the state of the output stage for each channel; LED
protection, signal peak, input signal and operating indicator.
Protection circuits for temperature, overcharge, overload, surge or short-circuit. Forced ventilation with
adjustable speed depending on the internal temperature.
CONTROLS AND FUNCTIONS
FRONT PANEL
1.-
CH1 to 4 (BASS, TREBLE, MASTER):
output channel controls, BASS tone controls, TREBLE tone
controls and MASTER output volume control.
2.-
CH1 to 4 (PROT, CLIP, SIG, ON):
LED output channel indicators.
PROT lights up when an anomaly that has been produced by temperature, overcharge, surge or short-circuit
is detected. When protection is activated, the output signal is cut off.
CLIP lights up when the input signal to the amplification stage is very high and distorted.
SIG lights up when there is a signal in the amplification stage input.
ON lights up if the amplification stage of the channel works correctly.
3.-
INPUT 1 to 4:
volume controls for INPUTs 1 to 4.
4..-
AUX 1 and 2:
volume controls for inputs AUX 1 and AUX 2.
5.-
POWER:
power switch with LED indicator.
6.-
CHIME:
volume control and button for activating the musical chimes.
NOTE:
to play the musical chimes, the CHIME PRIORITY contacts on the back panel must be closed.
7.-
SIREN:
volume control and button for playing the siren signal.
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MAZ-4250E_MANUAL_EN_20140910_Maquetación 1 10/09/2014 10:26 Page 4
