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User's Manual
User's Manual
User's Manual
User's Manual
Your Sunre ATMOS Subwoofer is
designed to give you the best possible
low-frequency sound quality for your
Home Theater experience. It incorporates
a tremendously powerful built-in amplier
and a pair of drivers to produce tight,
oor-rumbling, denture-rattling bass that
you can feel as well as hear.
The subwoofer has an automatic
equalization system which will tailor the
subwoofer output to compensate for any
room effects.
The subwoofer has an adjustable high
cut lter and line-level inputs for easy
incorporation into existing systems, or
as part of a subwoofer/satellite speaker
combination.
Controls for adjusting the volume,
crossover frequency and phase, allow
the subwoofer to be perfectly matched
to any listening environment and audio
components.
The Drivers
To have lots of bass requires moving lots
of air. Your Sunre Subwoofer incorpo-
rates two drivers that can move back and
forth approximately ve times more than
a normal subwoofer. This gives it a lot
of air moving capacity which allows for
majestic bass performance.
Two drivers share the acoustic output.
Sometimes one driver appears to be
moving more than the other. They both
move the same amount only when op-
erating at the limit of their excursion and
power output, or when bass requirements
and music requirements demand maxi-
mum output from the system. Otherwise,
the power is shared between the two
drivers in a way that depends on the mo-
mentary amplitude and the momentary
musical spectrum. It is normal for one or
the other to move more or less than its
mate during operation.
The Amplier
The large movement range of the driv-
ers creates greater air pressure inside
the box than a conventional subwoofer.
Therefore, the drive amplier must be
much more powerful than an ordinary
subwoofer amplier. In fact, it has to be
so powerful, it is almost hard to believe.
The power amplier within your Sunre
Subwoofer is capable of delivering over
1400 watts into a 3.3 ohm resistor (the
driver voice coil resistance). When the
same full output is applied to the driver,
however, the enormous back-electro-
motive force generated as a conse-
quence of its large motion and giant mag-
net, causes the current ow to be much
less than if it were a 3.3 ohm resistor. It
is this singular property of the driver that
allows the subwoofer to be approximately
ten times more efcient than a subwoofer
this size would normally be.
A compressor circuit kicks in automati-
cally if the input signal level reaches a
level that would overload the driver. This
maintains a ceiling on the output without
clipping. If the input signal is driven even
further, a ‘soft clipping’ circuit is enabled.
This allows the subwoofer to put more
sound into the room to satiate the power
hungry user, but without distortion or
damage to the subwoofer. Thus, for ex-
plosive scenes in movies, this produces
extremely high sound pressure levels
(SPL) in your room without the drivers
banging against the mechanical stops.
For more details of the subwoofer design,
please call us or view our website: www.
sunre.com.
Overview