Read JBL GTH 400 (serv.man2) User Guide / Operation Manual online
7
3.2 Typical Applications
The diagrams on pages 8 & 9 show
the most common basic system
configurations of the GTH400. One
or more of these building blocks may
be combined to form elaborate system
designs.
the most common basic system
configurations of the GTH400. One
or more of these building blocks may
be combined to form elaborate system
designs.
The GTH400 uses the terminology
“Group 1,” “Group 2” and “Group 3” to
indicate the three main signal paths
within the amplifier. Each “group” may
consist of a mono bridged signal or a
stereo pair of L+R signals depending
on the system configuration.
“Group 1,” “Group 2” and “Group 3” to
indicate the three main signal paths
within the amplifier. Each “group” may
consist of a mono bridged signal or a
stereo pair of L+R signals depending
on the system configuration.
R
L
R
L
–
+ –
+
–
+ –
+
L+
L–
R+
R–
L+
L–
L+
L–
R+
R–
R+
R–
–
+ –
+
Application 1
6-Channel Bi-Amplified System with
Non-Fading Subwoofers
Non-Fading Subwoofers
GTH400
GR 1
GR 2
GR 1
GR 2
GR 3
R
L
R
L
R
L
Front Speakers
Rear Speakers
Subwoofers
Group 1
Group 2
Group 3
Mode
Stereo
Stereo
Stereo
Group 2 Input
–
GR 2
–
Group 3 Input
–
–
GR 1+2
Speaker Crossover
High Pass
High Pass
Low Pass
Preamp Crossover
–
–
–
–
+
–
+
–
+
L+
L–
R+
R–
L+
L–
L–
R+
R–
R+
–
+ –
+
Application 2
5-Channel Bi-Amplified System with
Non-Fading Mono Subwoofer
Non-Fading Mono Subwoofer
R
L
R
L
Preamp or
Speaker-Level
Input
Front
Rear
R
L
R
L
GR 1
GR 2
GR 1
GR 2
GR 3
R
L
R
L
Preamp or
Speaker-Level
Input
Front
Rear
GTH400
Front Speakers
Satellite Speakers
Rear Speakers
Subwoofer
Group 1
Group 2
Group 3
Mode
Stereo
Stereo
L+R
Group 2 Input
–
GR 2
–
Group 3 Input
–
–
GR 1+2
Speaker Crossover
High Pass
High Pass
Low Pass
Preamp Crossover
–
–
–
R
L
R
L
GTH400-20107 06/03/98 15:49 Side 7
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