A BRIEF DESCRIPTION OF TECHNOLOGIES
· bass reflex system at low frequencies
Low frequencies below 200Hz are reproduced by bass
reflex enclosure tuned at 27Hz. The Evidence is equipped
with a bass level adjustment. This is a very useful feature
allowing the listener to adjust the best sounding bass
level which depends not only on the positioning of the
speakers but also on personal taste.
· acoustic resistance enclosure at mid frequencies
Frequencies higher than 200Hz are reproduced by the
top part of the speaker. It employs a coaxial midrange &
treble driver which is a virtual point source. The main unit
is a 176mm glass-fibre coned driver which receives its
radiation characteristics from an acoustic resistance
enclosure. Thanks to the cardioid radiation patter the
speaker radiates frequencies over 200Hz mainly to the
forward direction. The backward radiation is dampened
most effectively being in power only one percentage of
the forward radiation. Unwanted reflections from the
nearby boundaries will be minimized and the midrange
will sound clean without colourations.
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