D 7SUR
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Jamo D 7SUR
Dual Concentric Diaphragm
The D 7 is a THX Ultra2 system designed for easy
integration in a ‘real world’living room. As well as
probably being the most compact Ultra2 system
in the world, it is also designed to look good in
its own right, with a fully integrated feel to every
aspect.
The totally unique tweeter features a clamped
dual-concentric diaphragm and ventilated
magnet system. Among other benefits, this
extends the frequency range to a very low 1 kHz,
allowing a smooth and seamless transition with
the midrange, and then all the way up to 40 kHz,
making it compatible with new digital multi-
channel sound formats.The voice coil is copper-
plated aluminum wire, combining the low weight
of aluminum with the superior conducting
qualities of copper, and making magnetic oil for
cooling and resonance damping unnecessary.
The surround speaker has five separate drivers.
When D 7SUR is correctly mounted on the side
walls of your home cinema, they will direct sound
forward, backward and out into the room, creat-
ing a perfect 3-dimensional sound picture.
D 7SUR is a true dipolar speaker with an array
of one 25mm / 1”tweeter and two 65mm/2.5”
midranges in each side of the speaker. In a
conventional dipole speaker you would experi-
ence poor bass reproduction due to the phase
cancellation effect between the two woofers
– we have solved this problem by having only
one 140mm/5.5”in woofer mounted in the
middle of the cabinet. Naturally all drivers are the
same as used in the D 7LCR for perfect timbre
matching.
Aluminum Center Plug
The aluminum center plug replaces the tradi-
tional dust cap, making the cone lighter and
faster.This also prevents sonic break-up as well as
pressure swings behind the dust cap as the cone
moves, resulting in more dynamic and precise
sound reproduction.The aluminum centre plug
cools the voice coil, providing increased
power-handling capability and stable sound
reproduction no matter how high the volume.
Specifications
System
Three-way dipole
Woofer (mm/in)
140 / 5.5
65 / 2.5 x4
25 / 1 x2
87dB
Midrange (mm/in)
Tweeter (mm/in)
Sensitivity (dB – 2.8V / 1m)
Impedance (Ohm)
Weight (kg/lb)
4 Ohms
7.3 / 16.1
Dimensions (HxWxD mm/in)
Power (Long Term/Short Term)
Terminal Type
265 x 508 x 126 / 10.4 x 20 x 5
100W / 250W
Gold plated binding posts
80-40,000
Frequency Range (Hz)
Finish
Stone Grey
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