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Planning the installation
Required DSP parameters
Maximum output - 200W//4
Ω
(28Vrms)
High pass filter - 30Hz*
Low pass filter/crossover - 160Hz or
below*
*Steeper rate filters are preferred as they
will filter out less of the usable frequency
range; a minimum of 24dB/octave is
required, and 48dB/octave is preferred.
Optimisation
With the above DSP parameters in place
the ALF100SM will deliver excellent
performance without additional
adjustments, but additional filtering and
time alignment may further improve
overall system performance.
When the installation is completed, refer
to the ‘Sound Optimisation’ section for
additional DSP settings that can improve
performance and refine integration of
the ALF100SM within a speaker system.
Plan the wiring
Before proceeding to install the
ALF100SM and any system speakers, plan
the system wiring. In larger systems it
may be advisable to sketch a schematic.
System amplifier(s)
The ALF100SM must be driven by a DSP
(Digital Signal Processing) amplifier or a
non-DSP amplifier with an external DSP
processor such as the MiniDSP.
The minimum DSP specification should
include -
• High Pass Filter and Low Pass Filter
(or crossover) with a slope of at least
24dB/ oct. A slope of 48dB/ oct. is
preferred where possible.
• Power limiting.
• 5+ bands of parametric equalisation
(PEQ).
• Time delay function.
• Phase reverse function.
• Password protection to prevent the
settings from being changed or
removed.
The protection parameters required
by Amina are listed in the next section.
These settings will prevent over-driving
and set the bandwidth to the rated
frequency range for the ALF100SM.
Password protection for the DSP
settings is required to prevent any
unauthorised changes which may
damage the ALF100SM.
The use of non-DSP amplifiers with
a wideband response, failure to
apply the required DSP settings
or using DSP settings that deviate
from the recommendations will
void the warranty and may result
in damage to the ALF100SM.