Whitepaper

4
Speaker Drivers
Development of the drivers for the LEKTOR
®
Series has been one of the most
important tasks in the engineering process, since it is a key factor in achieving great
performance from the loudspeakers. With 25 years of history within speaker design it
should be an easy task – but it never is. Designing the new drivers for the LEKTOR
®
has been a challenge to push technology and performance even further. All
LEKTOR
®
drivers are designed to match our design philosophies and the specific
loudspeaker models.
Low Frequency Drivers
All woofers and midrange drivers use a wood fiber cone with low mass
(approximately 30% lighter than a typical cone at the same size) and optimum
strength and stiffness – the result is uncolored, clean sound reproduced with great
speed. For structural stiffness the dust cap in the middle of the cone is inverted.
Gasket Spider Chassis Magnet Bucking
magnet
Surround/
Cone assy.
V.C.
Assy.
Top
plate
T-Yoke
Figure 2, Exploded view of 6½” woofer/midrange.
At low frequencies and high volume levels there is a great need for long excursion of
the cones. Therefore the low loss rubber surrounds
1
and spider holding the cone-
1
The low internal loss of the rubber material itself will help reproducing the subtlest details in
the music – the details are not ”absorbed” and transformed into ”heat loss”.