Technical Presentation - XTZ 99.25 Center MKII Piano User Manual

Technical presentation

Cabinet design
Tweeter driver
Woofer/midrange
driver
The cabinet shape is not only an aesthetically neat
shape, but also offer some advantages in terms of
acoustics, since nonparallel walls reduce internal
resonances of
The cabinet is made from 25mm MDF board,
offering good sonic qualities.
The cabinet is further strengthened with internal
bars, which in total ensures a very stable
construction.
We have selected a ribbon tweeter which provides
superior transient response and a very flat frequen-
cy response. The ribbon cone is super light and only
18 microns thick. It is a sandwich construction
made from rosin-aluminium-rosin that has been
hardened at 320 degrees Celsius.
The magnet system is a dual row high efficiency
neodymium magnets in a moulded chassis of ce-
ramic carbon steel.
Fishbone shaped contactors in aluminium, results
in a low connection resistance and good heat dis-
tribution.
The driver has high power durability and handles
frequencies up to 40000 Hz which makes it DVD-
Audio and SACD-ready.
After evaluating a large number of drivers from
different manufacturers we selected one from Seas,
a company that has a solid reputation in the area of
high quality speaker drivers. You find Seas drivers
in many well-known High End speakers.
For woofer/midrange we decided on a 6,5" magne-
sium driver from the Seas Excel series that have
extreme performance. We claim that finding a
better 6,5" driver on the market is a very difficult
task.
The surface treated magnesium cone is extremely
light but still extremely stiff and effectively reduces
resonances.
The rubber surrounding makes sure that no edge
resonances are present.
The moulded metal basket is a "high flow" type that
is acoustically transparent with high precision as
the basket is shaped exactly due to the moulding
process. This makes sure that the basket is very
stable and efficiently reduces resonances. The bas-
ket is absolutely non-magnetic, which contributes
to a higher efficiency of the driver.
A strong magnet combined with the light cone
ensures a high efficiency and a good transient re-
sponse.
Heavy copper rings mounted above and below the
T-shaped pole piece reduce non linear- and modu-
lation-distortion and increases the overload mar-
gin.
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the cabinet.
The tweeter in can be rotated, so the
speaker can be standing up or lying down