Read JBL 504 GTi User Guide / Operation Manual online
Wiring
Use 2-conductor stranded type,
insulated wire to connect the 404 and
504GTi Woofer/Midrange and Tweeter to
the included crossover, and the crossover
to the amplifier as shown in Figure F.
A minimum wire gauge of 18AWG is
recommended, with larger size suggested
for wire runs longer than 10 feet.
504GTi Woofer/Midrange and Tweeter to
the included crossover, and the crossover
to the amplifier as shown in Figure F.
A minimum wire gauge of 18AWG is
recommended, with larger size suggested
for wire runs longer than 10 feet.
The polarity (the positive / negative
orientation of the connections) for every
speaker and crossover to amplifier
connection must be consistent from left to
right channel to assure proper imaging and
optimum frequency response. This does
not mean that the Coupled Components
speaker and crossover to amplifier
connection must be consistent from left to
right channel to assure proper imaging and
optimum frequency response. This does
not mean that the Coupled Components
TM
should always be connected in the same
polarity as the woofer/midbass or
subwoofer however. It is possible, due
to the difference in the distance that
the sound travels from the Coupled
Components
polarity as the woofer/midbass or
subwoofer however. It is possible, due
to the difference in the distance that
the sound travels from the Coupled
Components
™
to your ears, compared to
the distance from the subwoofer or
woofer/midbass, and the wavelengths of
sound at the crossover frequency, that a
connection where the subwoofer or
woofer/midbass are connected in reverse
polarity from the Coupled Component
woofer/midbass, and the wavelengths of
sound at the crossover frequency, that a
connection where the subwoofer or
woofer/midbass are connected in reverse
polarity from the Coupled Component
TM
drivers may actually result in better sound.
Because there is no way to accurately
predict this before installation, we
recommend that you try the connection
both ways, and leave it in the polarity that
gives the smoothest audible transition
between the Coupled Components
Because there is no way to accurately
predict this before installation, we
recommend that you try the connection
both ways, and leave it in the polarity that
gives the smoothest audible transition
between the Coupled Components
™
and
the subwoofer or woofer/midbass. Some
active crossovers, such as the JBL GTX47,
have a phase switch which enables you
to easily switch polarity. When the sub-
woofer or woofer/midbass and Coupled
Components
active crossovers, such as the JBL GTX47,
have a phase switch which enables you
to easily switch polarity. When the sub-
woofer or woofer/midbass and Coupled
Components
TM
are mounted close to each
other, the in-phase connection will usually
yield the best sound.
yield the best sound.
System Connections
There are a variety of system options
available with the 404 and 504GTi. The
simplest configuration is to use the 404
and 504GTi full range. Although this will
yield good sound, the best performance
will be achieved in a high-end system
which includes subwoofers and, optionally,
midbass transducers. Because the 404
and 504GTi are specifically designed
for mid and high frequency operation,
they should have their extremely low
frequencies blocked by electrical means in
order to achieve the best system fidelity
and the widest dynamic range. However,
full range use may be obtained at slightly
lower power handling levels.
simplest configuration is to use the 404
and 504GTi full range. Although this will
yield good sound, the best performance
will be achieved in a high-end system
which includes subwoofers and, optionally,
midbass transducers. Because the 404
and 504GTi are specifically designed
for mid and high frequency operation,
they should have their extremely low
frequencies blocked by electrical means in
order to achieve the best system fidelity
and the widest dynamic range. However,
full range use may be obtained at slightly
lower power handling levels.
10
INPUT
WOOFER
TWEETER
504 GTI Crossover
INPUT
WOOFER
TWEETER
Figure F
404/504 MANUAL.QXP 7/17/98 11:39 AM Page 10
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