JAMO D 7SUB Broşür - Sayfa 6

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D 7SUR

The dipolar surround speaker D 7SUR, use the same

drivers as the D 7LCR.

This is done to achieve seamless timbre matching with

D 7LCR and to obtain the same high level of detail in

the sound reproduction.

D 7SUR is equipped with one 5½" woofer, four 2½"

midrange drivers and two 1" tweeters. At both ends of

the speaker, there is a midrange/tweeter array with

two midrange drivers, mounted close to each other

D 7SUR

with the tweeter above them - all in a vertical line.

This is done because the surround speakers, due to their positioning in relation to the

listening position, must have a different dispersion characteristic than the front speakers.

The dispersion pattern must be to the sides and upwards to "paint" the walls and ceiling

with sound.

The D 7SUR features a single woofer mounted in the centre of the front baffle.

This configuration was chosen as conventional dipole speakers often suffer from poor bass

reproduction, due to phase cancellation between the two woofers.

When equipped with one woofer, the depth of the cabinet can also be minimized, further

adding to the ease of installation in the room.

The crossover frequency for the woofer is set at 200Hz, making it impossible to locate the

speaker placement.

With this configuration we have a dipole surround speaker with the "best of two worlds": It

is capable of reproducing the deepest bass - and still able to disappear physically in the

sound picture.

D 7SUB

The D 7SUB is equipped with a very powerful 15"

woofer. It is controlled by our Motional feed back

(MFB) circuitry and equipped with a solid 400 watt

(continuous output) class D amplifier, capable of

delivering peak power of up to 700 watt.

The stand by power consumption is <1 watt.

Thanks to the heavy MDF board cabinet, the powerful

amplifier, and the MFB circuitry, the D 7SUB delivers a

deep, precise and detailed reproduction of the low

D 7SUB

D 7SUB visually matches D 7LCR as width and design are identical.

A change in THX Ultra2 compared with THX Ultra is the frequency range. In THX Ultra2

the subwoofer is required to operate down to 20 Hz -6dB, compared to 35 Hz -3dB.