JBL 404GTI, Руководство по установке

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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 404 or 504GTi. 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 404 and 504GTi. 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 404 and
504GTi will not play as loudly, or handle
the full rated power, when used without a
subwoofer and associated high-pass
crossover. When using the 404 or 504GTi
full-range, 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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404/504 MANUAL.QXP 7/17/98 11:39 AM Page 13