JAMO E 500 Opuscolo - Pagina 6
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2.5 E 7SUB
The E 7SUB is equipped with a very powerful 10"
woofer and equipped with a solid class AB amplifier,
capable of delivering peak power of up to 675 watt.
Thanks to the heavy MDF board sealed cabinet, the
powerful amplifier and the high excursion woofer, the
E 7SUB delivers a deep, precise and detailed
reproduction of the low register - perfectly matching
the sound from the rest of the E 7 series.
With a frequency response that reaches down to 25
Hz the E 7SUB is not only designed for movies but for
music too. This subwoofer is just as comfortable
portraying subtle musical nuances as it is churning
out high-level gunfire, explosions and earthquakes.
However, under certain circumstances the capability of being able to reproduce very low
frequencies can create a problem, which is why we have chosen to implement the
Boundary Gain Compensation technology also found in our EISA award winning D 7SUB.
Boundary Gain Compensation
any room amplifies the lowest frequencies.
The Boundary Gain Compensation starts at
55 Hz -3dB and drops to –10 dB at 25 Hz.
The magnitude of the room's amplification
depends on the room and where you are
positioned – normally it increases the closer
you get to a wall, which also means that the
problem get worse the smaller the room.
This can result in too high bass level from
approx. 60 Hz and increasing downwards. In
the range between 20-30Hz it peaks up to 5-
10dB in an average room.
At first impression this could sound really
impressive, but especially when listening to
music the sound can be "boomy" and rather
annoying.
With the usual adjustment possibilities such as cut-off frequency and volume level it will be
impossible to obtain a linear in-room frequency response. However the Boundary Gain
Compensation switch will allow an additional fine tuning possibility which will
compensate non optimal placement of the listening position in most rooms.
compensates for the room influence at low frequencies, as
Off
Off
Illustration of how the Boundary Gain
Compensation technology works. Note that in both
off positions the peak around 20-30 Hz is much
higher than 40-100 Hz, whereas in the on position
the bass response is more linear.
E 7SUB
On
On
Off
Off
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