This is the text that was around at the time -
BMW is the first European car manufacturer to be awarded a THX certification
for its LOGIC 7 Professional car audio system. The standard awarded to the BMW
Z4 underscores the unsurpassed sound quality offered by BMW's flagship in-car
entertainment system.
The THX standard was established in 1983 by filmmaker George Lucas as he strove
to improve the way cinema audiences experienced feature films. With this
technical know how, scientists from THX worked closely with BMW engineers to
develop the LOGIC 7 Professional system for the BMW Z4. Strict criteria such as
the layout, positioning and acoustic performance of the sound system were all
assessed.
Edgar Kirk, Head of Development of Audio Systems at BMW, said: "One of the
particular challenges is to develop optimum sound systems for a convertible
required to offer the same listening experience with the roof both open and
closed."
Such detailed work, combined with the way that a LOGIC 7 Professional system
breaks sound down into seven separate waves and then reconstructs them for
optimum quality, led to the Z4 receiving the commendation.
BMW's award-wining LOGIC 7 Professional sound system comes with digital
10-channel audio amplifier and sound processor, two woofer speakers, two
further low range speakers, four midrange speakers and two high range. The
total power output of the system is 470 Watts and buyers of a Z4 can order
LOGIC 7 Professional for £710.