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Power Control Manager
The DPC technology represents the most effective tool
available for the acoustic designer to achieve unprecedented
results in terms of control over the transucer displacement
and system performance in low frequencies.
Thanks to the differential pressure control, the behavior
of subwoofer and low frequency applications can be mod-
eled in order to modify the systems response, increase
sound pressure level capabilities and enhance the overall
efficiency.
A DPC system is composed by:
f a Class-D amp module;
f
f a differential pressure sensor;
f
f a low-latency DSP board;
f
f a low impedance transducer.
f
The DPC system performs a real time feedback between
the actual acoustic emission of the loudspeaker and the
instantaneous displacement of the transducer.
By knowing the pressure field generated by the loud-
speaker, the Zero Latency DSP controls the transducer
displacement and adaptively modify the system emission.
The system is capable to overcomes transducers non-line-
arities, offering a complete control over sonic performance.
14 : 1.Connect and discover the system
The behavior of a DPC system can be configured and
customized via a RS-485 connection by means of the
Powersoft's Power Control Manager software. You can
download the software from the Powersoft website:
http://www.powersoft-audio.com/docman/632-power-control-manager/file
In order to implement a RS-485 port on a personal
computer Powersoft recommend the use of the SPECTRA
USB 2.0 to RS-485 converter (browse the SPECTRA web-
site www.spectra.ch for further information). A DB9 to RJ45
adapter is needed as well (ref.
FIGURE 18: SPECTRA #112887 USB to RS-485 converter.
14 | IpalMod | User guide
FIGURE
19).
1
5
6
9
FIGURE 19: DB9-to-RJ45 adapter cable and RJ45 pinout.
Install the driver for operating the USB-to-RS485 con-
verter and install the Power Control Manager.
Properly plug the system as shown in
Once installed, the Power Control Manager shows a
blank window: the first step is to discover all connected
devices. This can be done automatically or manually.
FIGURE 20: Wiring diagram.
14
1
2 3 4 5 6 7 8
–
+
V
ext
GND
PIN
Signal
1
GND
2
V
ext
3
4
5
6
7
V
ext
8
GND
FIGURE
20.
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