6
M-Drive
User Guide
7
7 : 1.Welcome
Congratulations on your purchase of the Powersoft
M-Drive module.
We know you are eager to use the M-Drive module, but
please take a moment to read this user’s manual and safety
instructions. In case you have any questions, please do not
hesitate to contact your dealer or Powersoft.
The M-Drive is a one channel amplifier modules
specifically designed to fully exploit the potential of the
M-Force transducer. M-Drive shows amazing figures
in terms of both output voltage (310 V
peak
) and current
capabilities (200 A
peak
).
The new design of the power supply equipped with PFC,
reduces power consumption while enhancing reliability and
consistency in all operating conditions.
M-Drive can be equipped with any Powersoft or third-
party DSP solution, and integrates the Powersoft’s patented
Differential Pressure Control technology that optimizes
sonic performances of the amtra
environment system.
A custom heat sink designed to best fit the M-Drive is
available: please refer to the M-Drive IK solution for more
info on this subject.
7 : 4.Differential Pressure Control
The Differential Pressure Control – DPC – is the core
technology of the Integrated Powered Adaptive Loudspeaker
system, also known as IPAL.
DIFFERENTIAL
PRESSURE CONTROL
PATENTED
®
DPC makes M-Drive efficient and reactive to
the environment condition, overcoming the
physical limitation of traditional sound rein-
forcement systems.
The differential pressure measurement, senses the
difference of pressure between the front and the rear sides
of the radiating diaphragm and uses this information to
alter the behaviour of the transducer, according to the real
boundary conditions. Thanks to this innovative approach
to full boundary conditions feedback processing, the DPC
dramatically improves the electroacoustic efficiency in
terms of high SPL and sonic performance of the sound
reinforcement system.
The DPC system combines a high-efficient transducer
with a high-power switching mode amplifier that embed a
fast and effective ZeroLatency™ DSP. The DSP performs
the double operation of both managing the loudspeaker
processing and taking care of the differential pressure
control signal. M-Drive establishes a global feedback
between the electrical and the acoustic domains.
Thanks to the rich graphic user interface – GUI – it is
possible to weight and customize the feedback between the
electrical and the acoustic domains.
7 : 4.1. Pressure mode
The Pressure mode relies on the DPC making it possible
to match a specific target pressure response. Being the SPL
output of any acoustic signal derived from the relationship
between the pressure and the acoustical impedance, it’s
straightforward to use a direct measurement of such a
pressure signal to make the system track a reference
target pressure model. Benefits in terms of predictability
of the system response and reduction of sensitivity from
disturbing effects could be substantially appreciated.
7 : 2.Unpacking & checking for shipping damage
Your Powersoft product has been completely tested and
inspected before leaving the factory. Carefully inspect the
shipping package before opening it, and then immediately
inspect your new product. If you find any damage notify the
shipping company immediately.
7 : 3.Disposal of the packing material
The transport and protective packing has been selected
from materials which are environmentally friendly for
disposal and can normally be recycled.
Rather than just throwing these materials away, please
ensure they are offered for recycling.
M-Drive | 1
