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Product configuration
Tweeter and waveguide
A ferrofluid–enhanced 1" aluminium-magnesium
dome tweeter is coupled to an 8" constant directivity
waveguide. Thanks to extensive optimization of
the waveguide, baffle dimensions and baffle edge
roundovers, its frequency response is virtually flat,
both on and off-axis. The stiff and light membrane
is resonance-free throughout the audible frequency
range.
Midwoofer and acoustic cardioid
cabinet
The 8" woofer has a light, stiff aluminium cone.
Its high stiffness and advanced surround design
suppress resonances in the woofer's operating
range. The long voice coil is wound around an
aluminium former, providing high power handling
and low thermal compression.
The acoustic cardioid cabinet reduces rearward
radiation by over 15 dB, for improved flexibility of
loudspeaker placement in the room and flat power
response. As an additional advantage, the semi-
open cabinet reduces panel vibrations and cabinet
colouration to an absolute minimum.
Subwoofers and sealed cabinet
The rear section of the cabinet houses two long-
stroke, high-power 8" subwoofer drivers in a sealed
cabinet. The low-Q alignment results in tight,
controlled, and extended bass. The subwoofers are
crossed over with a 4th order Linkwitz-Riley filter at
100 Hz.
Cabinet construction
The exterior panels of the cabinet are made of
19 mm solid oak wood, whereas the internal
construction is made of 18 mm birch plywood. In
combination with rabbeted joints and extensive
bracing, this results in a strong, rigid construction.
The front baffle is made of spray painted ABS and
damped with a special sound deadening compound
to prevent resonances. It is invisibly affixed with six
threaded steel rods.
Crossover and electronics
The midwoofer and tweeter are crossed over with a
4th order Linkwitz-Riley filter at 1250 Hz for optimal
driver integration and minimal interference. FIR
filtering ensures a linear phase perfect impulse
response.
A separate compartment houses the amplifiers,
which provide 500W to the subwoofers, 250W
to the midwoofer and 250W to the tweeter, as
well as the signal processing and communication
electronics. Filtering, Active Room Matching and
equalization options are accessible through a
platform independent web-app, which is hosted on
your 8c itself.
Browse to http://8c-<serial number> or http://8c-
<serial number>.local (dependent on your browser
configuration) to open the app. For serial number
123, browse to http://8c-123 or http://8c-123.local.
The app can also be found online at
lanspeaker.com.
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