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System Type 2
• Type-2A
takes into
account that all
drivers are mounted
more or less flush
to the panel on a
mostly flat vertical
surface such as the
door, thus present-
ing varying degrees
of both axis and
distance of each
driver to the
listener.
• Type-2B
is the
same as above,
but assumes the
woofer somewhat
farther away than
is typical. This will
accommodate
different vehicle
types as well as
kick panel mount-
ing of the woofer.
System Description
As one of the more common applications, this installation type is the most likely to be
accommodated by factory speaker locations to some degree, thus requiring the least
amount of custom fabrication. However, due to the mounting arrangement and surface
orientation, it also results in significant differences in distance and angle of all three
drivers relative to the listener. In order to optimize performance in this case, it especially
critical to link each driver together in relative phase throughout the transitional crosso-
ver regions, while also taking into account the frequency response effects of the various
off-axis listening angles of each driver. Two network configurations are provided for the
most typical variations of this installation type, each employing specific phase correc-
tion and response compensation. Again, please note that the tuning of the settings
below considers the best balance between driver and passenger listening positions, so
all distances and angles are referenced to the nearest side.
Also worth noting is the fact that the shorter near side pathlenths to the midrange and
tweeter will result in more dramatic seating position bias than other installation types.
While it is possible to adjust each network individually in order to specifically tune for
one listening position, it will often be more beneficial to utilize basic time correction to
correct for this left/right pathlength difference if available. In general though, a high
tweeter location is thought to be advantageous for improving perceived height and width
of the soundstage, as well as achieving a strong high frequency output level.