mechanical noise from an overstressed
speaker.
For the best performance and
system reliability, you should select an
amplifier with an output rating greater than
the maximum power likely to be used to
generate the desired volume levels. If you
want your system “Loud + Clear,” we
suggest that you step up to a JBL power
amplifier which has an RMS power rating
equal to, but not exceeding, the
Maximum
Recommended Amplifier Power listed in
the specifications of your specific JBL
speaker. This margin of reserve power will
ensure that the amplifier will not attempt to
deliver more power than its design allows.
Your dealer will be happy to point out
which high-power JBL amplifiers are
optimum for your application and listening
habits.
Following these guidelines will provide
virtually distortion-free sound reproduction
and long loudspeaker life.
In Case of Difficulty
The most common difficulties are
noise, distortion, and intermittent
connections.
System noise is usually not the fault of
the 600GTi. Hiss or "alternator whine" is
most often the result of faulty grounding of
the system electronics or improper setting
of amplifier level controls. An exception to
this is if the passive crossover networks
are mounted near a source of radiated
noise, the network may pick-up this noise
with sufficient power to drive the 600GTi.
For this reason, be careful not to mount
any passive crossovers near wires
carrying high currents such as battery
cables or wires leading to ammeters or
tachometers.
Distortion is usually the result of
overdriving one or more components in
the system. The problem is most likely
insufficient amplifier power, or improper
setting of gain controls. Refer to the
instructions which came with the
electronics for assistance. The 600GTi will
not play as loudly, or handle the full rated
power, when used without a subwoofer
and associated high-pass crossover.
When using the 600GTi without a high-
pass filter, be careful to limit the volume
level to that which can be reproduced
without audible distortion from the speaker.
If you want to talk to us about any
problems, call JBL Customer Service at
1-800-336-4JBL (4525) between 9AM and
5PM eastern time.
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