JBL GTH400-20107 manual Application

GTH400-20107 06/03/98 15:49 Side 8

Application 3

4-Channel Full-Range or Bi-Amplified

4-Channel Full-Range

	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	–	–	–

L

Front

L

GR 1

GTH400

R L

Preamp or

Speaker-Level L Input L

GR 2

R

Rear

R

GR 3

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	–	–	–

*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.

GR 1		GR 2					GR 3
L–	R+		L–	R+ L–	L+
					R–	R+

–	+	–	+	–	+	–	+
	L		R		L		R

Front Speakers	Rear Speakers
	or Subwoofer

Application 4

3-Channel Bi-Amplified

4-Channel Input (Fading Subwoofer)

		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	R		L	R
Front						Rear
	L			L L			R
GR 1				GR 2		GR 3

GTH400

GR 1		GR 2				GR 3
L–	R+		L–	R+	L–	R+

Use these when 4-channel output is available.

Note: Image Enhancement cannot be used in these applications.

L R

Main Speakers Subwoofer

8