Input Sensitivity - XTE Electronic Digital Technology XTDT3200 User Manual

Usage
Connecting to the mains and power
absorption
Check whether there is enough power to supply
the amplifier. (refer to the data at the end of this
manual).
Pay attention to the voltage of the network that
should comply with the directions reported on the
back of the amplifier.
Maximum power consumption is limited solely
through the internal fuses
Attention: before any audio connection
keep in mind that the regular procedure
is to turn off the amplifier and to unplug
it from the mains and to set the volume
tuners to the minimum, during starting up.
Cooling
Pay particular attention to the ventilation/cooling
conditions of the amplifier. An internal system of
forced airflow, by a variable speed fan, allows
cooling of the dissipators due to the heat
generated by power parts.
The airflow is directed from the front panel to the
back panel of the amplifier, which means that the
air comes in from the front entry and is discharged
through the back opening.
Pay particular attention so that there is enough
space at the amplifier front side to allow the air to
go in and enough space at the back to allow it to
come out. If the amplifier is installed in a rack
strand make sure that there is enough air
clearance, the air should easily flow through the
amplifier meeting no resistance.
Setting
Make sure that the equipment is turned off before
setting it according to your needs.
internal switches and jumpers for setting; it is also
possible to set the amplifier for the following
functions:

Input sensitivity

For settings input sensitivity used internal jumper
(refer to drawings page 12)
It is possible to select an independent setting for
each channel, the available settings are 0.775V
(0dB) and 1.23V (+ 4dB). The manufacturer's
setting is 0.775V.
Selectable filter for low frequencies
Your amplifier is equipped with an HPF filter that
can be selected for every channel. The cutting
frequencies available are 30 or 75 Hz. To set the
cutting frequencies use internal jumpers, (follow
the procedures as shown in diagram 7 page 12),
starting up is made through the switch on the
back.
When the filter is disabled, the amplifier will still be
protected by the input DC.
Stereo mode (standard)
When using stereo mode every channel operates
independently and its input attenuators control the
respective level.
The minimum recommended load for running in
stereo is 2 Ohms per channel for XTDT3200 and
XTDT3800
XTDT4800F and XTDT6000F (please refer to
technical specifications).
The input signal ca be connected by using Combo
or Europlug connectors cabled on the back panel.
The loudspeakers are linked to the output
connectors speakon A-B (C-D). (refer to fig. 4
page 9)
Bridged mono mode
The bridged mono mode is enabled when the
Link/Bridge switches on the back panel are
positioned to "ON". Using bridged mono mode
implies that both channels of the amplifier (A and
B or C and D) are running with the same input
signal, but with inverted phases. For output power
values refer to technical specifications on page
14.
For bridged mono usage a single input Ch A or Ch
B (Ch C or Ch D) is required and you should pay
particular attention so that both level attenuators
(A and B, C and D) are set to the same position
(we recommend you to set them to position 0 dB).
To connect the signal both connectors Combo or
Europlug can be used. The loudspeakers should
be linked to the output connector speakon A. (C)
(refer to fig. 5 page10).
Parallel inputs (Link)
Use the
The parallel mode is enabled when the Link
switches are set to position "ON". In parallel
mode, the inputs of both channels are connected
and receive the same signal. The input signal
shall be connected to Ch A or Ch B (Ch C or Ch
D). Both input connectors Combo or Europlug can
be used.
Level attenuators work independently, it is
therefore possible to set a different level for every
channel. The loudspeakers are linked to the
speakon output connectors A or B (C or D). (See
fig. 6 page 11)
Please pay attention so that only the inputs are
connected in parallel. Never connect the positive
Bi-amping.
and 4 Ohms per
output terminals on earth or parallel.
Attention: always unplug the Link
switches when running the amplifier for
channel for