DTDAMP SETUP
PAGE 5 OF 8
When used with a DTD-I, DTD
AMP
SP4 outputs are split into:
The DTD-I back panel (Sub sensing connector), to ensure
proper feedback of the DTDAMP output to the Controller for
speaker protections.
The NEXO speakers and subs, as shown on the picture bellow.
Sub R Sub L Main R Main L
Please check the speaker impedance before connecting to the
DTD
AMP
.
W ARNING!
The DTDAMP works with output load down to 4
Ohms in four channels mode or down to 8 Ohms in bridge mode.
Connecting the DTD
AMP
mains input
The DTD
AMP
can accept only 100 ~ 120 Volts Mains or 220 to 240
Volts Mains, both 50 to 60 Hz, depending on its internal configuration.
This configuration is set into the factory and the selected value can be
read from the DTD
AMP
top panel sticker.
W ARNING!
Check the local mains value and ensure that it fits
the need of your DTDAMP before connecting.
Refer to the specification page of this document to know the mains
power requirement of the DTD
AMP
depending on the DTD
AMP
model
and the load connected.
The mains connection is done through a standard IEC-C14 connector.
Check that the mains switch is OFF before connecting the mains
socket.
DTD
AMP
setup
The DTD
AMP
setup is straightforward. Once all the wiring has been
done, set the volume control to the minimum position (-infinity) power
ON the DTD Controller and switch the DTD
AMP
mains switch to the
ON position.
Wait a few seconds that the two “READY” indicators light up and turn
the volume for each channel in use to the first as show bellow.
Send some audio signal into the DTD
AMP
and check that each speaker
or sub is outputting a non-distorted sound.
Once this has been checked, turn the audio source down and set up
the volume control to the 0 dB position.
W ARNING!
When used in bridge mode, set the two volume
control knobs of the channels bridged to the same position (0 dB for
example).
Front panel LEDs display
20 LEDs will report the status of the DTD
AMP
to the user.
For CH1 & CH2 on one side and CH3 & CH4 on the other side,
two READY Green LEDs will light once the channel is ready for
use.
For CH1 & CH2 on one side and CH3 & CH4 on the other side,
two TEMP Yellow LED will :
o
Stay OFF if amplifier heatsink is bellow 75 °C.
o
Blink if amplifier reaches 75 °C, meaning that the output level
is reduced to protect the unit.
o
Turn ON if amplifier reaches 85 ° C, meaning that the output
is muted due to over temperature.
For each Channel, three green LEDs indicate the channel level.
o
SIGNAL will light when input signal is fed.
o
-18 dB will light when output level is 18 dB from max.
o
-6 dB will light when output level is 6 dB from max.
For each Channel, one PEAK red LED indicates that the maximum
output voltage is reached for a channel, thus triggering the
DTD
AMP
peak limiter.
Maintenance
W ARNING!
Always unplug the DTD
AMP
from the mains before
cleaning it.
Check regularly the dust level of the air intakes of the DTDAMP. If
some dust is inserted into the cooling tunnel of the amplifier, use
compressed air to remove dust from the amplifier.
The chassis and the front panel can be cleaned using a dry cloth.
Thermal dissipation and current drawn
DTD
AMP
4x0.7 with 4 Ohms load on each channel
Line Current (A)
Watts
Dissipated
Thermal Dissipation
120 V
230 V
BTU/h
kcal/h
Idle
1.0 A
0.5 A
65 W
215
55
1/8 Max
power
7.5 A
3.8 A
580 W
785
200
1/4 Max
power
13 A
6.5 A
1100 W
1250
315
DTD
AMP
4x1.3 with 4 Ohms load on each channel
Line Current (A)
Watts
Dissipated
Thermal Dissipation
120 V
230 V
BTU/h
kcal/h
Idle
1.0 A
0.5 A
65 W
220
55
1/8 Max
power
12 A
6 A
900 W
955
240
1/4 Max
power
22 A
11 A
1800 W
1780
450
