dB TECHNOLOGIES DVA T4 - Manuale (Pagina 4)

D LE STATUS ED ”READ ” ED AUDIO MO U L Y L
P er N Of n fo 5 ec. Dat lo ing ow O f O r s a ad
In mute r 5 ec. fo s
Norm u e On f Complete al s O f
Equalizatio ch ging Off n r 5 ec. Data l ding n an O fo s oa
In mute for 5 sec.
Partial fault On S ow flashing Partial l
T al fault O f On fixed In mute ot f
Ampl fier t perature: i em
higher °C Slow fl shing Off Output vol e 70 a um
Red tion step uc
higher 80°C Fa t flashin O f Output vol me s g f u
reduction -15dB
“MUTE/P OT” R
(gr en) (yellow) FUNCTIONS e
GN DIA OSTICS TABLE
5
English English
6
TECHNICAL SPECIFICATION
System Active 3-Amps
Type of amplifier Digital - Class T
RMS power 420 W
Musical power 840 W
Frequency responce +/-3dB 80-19.000Hz
Crossover 420 - 2500Hz
24dB/oct
Sound pressure (SPL) 128 peak
Component parts 1 woofer 8” - coil 64mm - neodymium
Input sensitivity nominal 0 dBu
Impedence Bilanced 20Kohm
Unbalanced 10Kohm
Delay totale 1,2mS
~ 50-60Hz
Speaker shape trapezioid
Dimension [LxHxP] 580x330x240/160mm
Weight 13,2Kg
1 midrange 6,5” - coil 38mm - neodymium
2 compression driver da 1” - neodymium
Power supply full-range with PFC
85-265V “NOISE GATE” function
NOISE GATE, or residual noise suppressor, is a function to reduce noise of the speaker
without input audio signal applied.
NOISE GATE starts to work when there is no audio signal on input, after a few seconds, it
sets the amplifier section in MUTE state . MUTE state is indicated by slow flashing, of
“MUTE/PROT” yellow led. As soon as the audio signal passes he input section, the
speaker is set out of MUTE status automatically.
This option can be enabled and disabled according to the follow procedure on the
amplifier’s module.
1) How to check NOISE GATE status
The NOISE GATE status is visualized by the leds located on the amplifier panel during
switching on the module.
Function enabled =all leds flashes steady for 5-6 second.
Function disabled = only “MUTE/PROT” yellow led flasches steady for 5-6 second
2) NOISE GATE enabled/disabled
NOISE GATE enabled/disabled can be done each time when switching ON and OFF the
amplifier module with “SET-UP MODE” selector on position “9 “(service use only).
To enable/disable NOISE GATE function follow this procedure:
- Amplifier switched OFF
- Set “SET-UP MODE” selector in position "9"
- Switch ON the amplifier module and check following:
* if “LIMITER" red led steady flashes for a few seconds, the NOISE
GATE is enabled.
* if “LIMITER" red led flashes fast for a few seconds, the NOISE
GATE is disabled
Warning!
After enabling or disabling the NOISE GATE function, switch off the amplifier, select
“SET-UP MODE” selector in any equalization position (except of "9" position) and
switch the system ON.
240 160
580
330
EMI CLASSIFICATION
According to the standards EN 55103 this equipment is designed and suitable to operate in E3
(or lower E2, E1) Electromagnetic environments.