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L L RL
R
+
L
–
Application 4
3-Channel Bi-Amplified
4-Channel Input (Fading Subwoofer)
L L RR
GR 1
GR 3GR 2
Group 1 Group 2 Group 3
Input Mode L L L+R
Group 2 Input – GR 2 –
Group 3 Input – – GR 3
Speaker Crossover High Pass High Pass Low Pass
Preamp Output Crossover – – –
2-Channel Input (Mono Subwoofer)
Group 1 Group 2 Group 3
Input Mode L L L+R
Group 2 Input – GR 2 –
Group 3 Input – – GR 1+2
Speaker Crossover High Pass High Pass Low Pass
Preamp Crossover – – –
L L RL
– +
– + – +
R
+
L
–
R
+
L
–
L
+
L
–
R
+
R
–
– +
Application 3
4-Channel Full-Range or Bi-Amplified
Preamp or
Speaker-Level
Input
Front Rear
GTH400
GR 1
GR 2
GR 1 GR 2
GR 3
GR 3
GR 1
GR 2 GR 3
Front Speakers
Use these when
4-channel output
is available.
R
+
L
–
R
+
L
–
GTH400
Main Speakers
Note: Image Enhancement cannot be used in these applications.
Subwoofer
Rear Speakers
or Subwoofer
Group 1 Group 2 Group 3
Input Mode L L Stereo
Group 2 Input – GR 2 –
Group 3 Input – – GR 3
Speaker Crossover Flat Flat Flat
Preamp Output Crossover – – –
4-Channel Bi-Amplified with
Fading Mono Subwoofers
Group 1 Group 2 Group 3
Input Mode L L L+R
Group 2 Input – GR 2 –
Group 3 Input – – GR 3
Speaker Crossover High Pass High Pass Low Pass
Preamp Crossover – – –
RL RL
Front Rear
RL
RL RL
4-Channel Full-Range
*Stereo subwoofers may also be used by selecting “ST”
on the group 3 input mode switch.
Note: Image Enhancement cannot be used in these applications.
GTH400-20107 06/03/98 15:49 Side 8