JAMO E 770 Broşür - Sayfa 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

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

Off