dB Technologies DVA T4 Bedienungsanleitung Seite 4

DIA GN OSTICS TABLE
MO U D LE STATUS L
P ow er N O Of
Norm u e al s On
Equalizatio ch n an ging Off
Partial fault On
T al fault ot O f
Ampl fier t i em perature:
higher 70 °C Slow fl shing
higher 80°C Fa t flashin
"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.
EMI CLASSIFICATION
According to the standards EN 55103 this equipment is designed and suitable to operate in E3
(or lower E2, E1) Electromagnetic environments.
5
ED "READ " Y L ED "MUTE/P OT" R AUDIO
(gr en) e (yellow) FUNCTIONS
f O n fo 5 ec. r s Dat lo
In mute r 5 ec.
O f f Complete
O fo n r 5 ec. s Data l
In mute for 5 sec.
S ow flashing l Partial
f On fixed In mute
a Off Output vol
Red
s g O f f Output vol me
reduction -15dB
TECHNICAL SPECIFICATION
System
Type of amplifier
RMS power
a ad ing
Musical power
fo s
Frequency responce +/-3dB
Crossover
oa ding
Sound pressure (SPL)
Component parts
um e
Input sensitivity nominal
uc tion step
Impedence Bilanced
u
Delay totale
Power supply
Speaker shape
Dimension [LxHxP]
Weight
Active 3-Amps
Digital - Class T
420 W
840 W
80-19.000Hz
420 - 2500Hz
24dB/oct
128 peak
1 woofer 8" - coil 64mm - neodymium
1 midrange 6,5" - coil 38mm - neodymium
2 compression driver da 1" - neodymium
0 dBu
20Kohm
Unbalanced 10Kohm
1,2mS
full-range with PFC
85-265V ~ 50-60Hz
trapezioid
580x330x240/160mm
13,2Kg
580
6