JBL 08GTi Installation Manual page 20

used, the best crossover choice
is the laboratory-optimized,
system-matched crossover which
is included with the 408GTi or
508GTi system. If you have not
yet installed your components,
we suggest that you consult your
dealer for this system package.
When a crossover such as this
one is used, you do not use the
protection network as it will inter-
act with the main crossover in a
detrimental way. It is also redun-
dant, the main crossover will per-
form all of the functions of the
protection network. If the pack-
aged GTi system crossover is
20
not used, the protection network
should be used as the high-pass
element, and a 5kHz low-pass fil-
ter may be built or purchased to
connect in line with the midrange
driver.
The most advanced system
designs use active electronic
crossovers such as the JBL
GTX2 or GTX47. When an
active crossover is used, the pro-
tection network is not used, you
should however install an in-line
fuse holder containing a 1.5A
fast acting fuse between the
power amplifier and the tweeter.
Set the crossover frequency at or