JBL GT4.0c - Manual (Page 10)

10
System Design
There are a variety of system
options available with the
Component System. The simplest
configuration is to use them full
range with their built-in passive
crossovers by connecting them to
the output of a head unit or an
amplifier (Figures 7 and 8).
If you want to build your system
using active (electronic)
crossovers, with separate ampli-
fiers to drive the tweeter and
midwoofers, you can bypass the
capacitor on the tweeter and the
coil on the midwoofer (Figure 9).
A more advanced system design
can be achieved by adding a GT,
GTx, GTi, or equivalent sub-
woofer to your component sys-
tem. In this case the component
system will be used as high and
midbass frequency drivers and
should have their extremely low
frequencies blocked by electrical
means. Active or passive cross-
overs can be used in order to
achieve the best system fidelity
and widest dynamic range. Cross-
over frequency recommendations
are given in the Specifications.
+ + Left Right
Left
Channel
Right
Channel
In-line
Capacitor
–
GTC04
Tweeters
– –
GTC Component System
connected to speaker outputs of
a High-Powered Head Unit
GTC
Midwoofers
– –
+ + – – Left Right
Left
Channel
Right
Channel
In-line
Capacitor
–
GTC04 Connected to GTC Midwoofer,
GTC Midwoofer Connected to Amplifier
GTC04
Tweeters
- -
GTC
Midwoofers
Amplifier output
set at Full Range or
High Passed at f > 80Hz
– –
Figure 7
Figure 8
GT4.0c, 5.0c, 6.0c OM 7/16/98 9:54 AM Page 10