Nova DXP6000, User Manual, Page: 10 / 10

Reference Manual
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Reference Manual
Page 7
DXP Series Switching Power Amplifier DXP Series Switching Power Amplifier
13. Input Sensitivity/Gain
The standard settings are:1.4V,32dB,26dB,selection is independent for each channel. Use
this function to match the amplifier's
sensitivity/gain with the other connected equipment.
As option, is possible adjust the unit for any sensitivity/gain.Note that every increase of the
gain will decrease the S/N ratio.
14. Mode operation switches
Setup these switches for the desired operation mode. For reference see
15. Speakon output connectors
The unit has four Speakon connectors as outputs: CH 1 and CH 2. Every one permit the con-
nection of both channels for stereo operation or parallel mode. For bridge operation the
CH1 connector should be used. For reference see
16. A.C. Power cable
The unit have one A.C. power cable. Before connection, be sure that the cable is not frayed
or broken. The connection must be made only in a plug with the electrical ground wire sys-
tem.
17. S.N. label
Every unit has a label indicating: the model, and the barcode serial number.
Figure 1.
Figure 1.
Operation
Grounding
There is no ground lift switch or terminal on this amplifier. The signal ground is always
floating via a resistor to chassis, and the grounding system is automatic. If a potential above
0.6V is presents in between signal ground and chassis ground, a short circuit is introduced
between the two, thereby enabling electrical protection. If a unit in the system is faulty, its
mains fuse will blow due to this automatic ground system. If however you wish to tie the sig-
nal ground to chassis, connect the XLR-connector`s shell lug to pin 1. In the interest of
safety never disconnect the earth pin on the AC power cord.
For all units that are FCC approved (radio interference), there is an AC mains filter. This fil-
ter needs the chassis ground for reference, otherwise a current loop is formed via the signal
ground. Use the balanced input to avoid hum and interference.
Connecting Power and Circuit size requirements
Amplifier's power requirement are rated at idle, at 1/8 and 1/3 power ("severe" music condi-
tion).The maximum power current draw rating is limited only by the internal fuses. Consult
the specification at the end of this manual for the power each amplifier will demand. Mains
voltage must also be correct and the same as that printed on the rear of the amplifier.
Damage caused by connecting the amplifier to improper AC voltage is not covered by any
warranty.
Note: always switch off and disconnect the amplifier from mains voltage before making
audio connections, and as an extra precaution, have the attenuators turned down during
power-up.
Operating voltage
WARNING!
A label just below the mains cable on the rear of the amplifier indicates the AC mains volt-
age for which the amplifier is wired. Connect the power cable only to the AC source referred
to on the label. The warranty will not cover damage caused by connecting to the wrong type
of AC mains.
DXP6000 switch mode amplifiers use primary switching. The mains power is being rectified
directly in front of the transformer, meaning that the power supply is insensitive to the mains
frequency .
If the power plug is not appropriate for your country, it can be cut off and wired to a suitable
connector in the following way:
BLACK or BROWN LIVE
WHITE or BLUE NEUTRAL
GREEN or GREEN / YELLOW EARTH
Once the AC connector is connected to a suitable AC supply, the amplifier can be started
with the power switch. When you power up the amplifier it takes a couple of seconds to
check its circuits(this is known as the
soft start or slow start sequence), the fans then blow
at high speed before going into idle , and the two bottom green LEDs come on to show the
output circuits are receiving the correct rail voltage.