JAMO Portable Speaker D7SUR User Manual

D 7SUR  
Let us  
entertain  
you  
Jamo D 7SUR  
Dual Concentric Diaphragm  
The D 7 is a THX Ultra2 system designed for easy  
integration in a ‘real worldliving 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 / 1tweeter 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/5.5in 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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