JBL GTQ240 Application, Channel Full-Range, Channel Bi-AmplifiedSystem with, Front, Rear, Output

Application 1

4-Channel Full-Range

	Group 1	Group 2
Input Mode	ST	ST
Group 2 Input	–	GR 2
Speaker Crossover	Flat	Flat

	L	R		L	R
Front			Preamp or		Rear
		Speaker-Level
	L	R Input		L	R
	GR 1				GR 2

GTQ

Application 3

4-Channel Bi-Amplified System with Non-Fading Subwoofers

	Group 1	Group 2
Mode	Stereo	Stereo
Group 2 Input	–	GR 1+2

L

Front

L

GR 1

GTQ

AMP

R	L	R
Preamp or		Rear
Speaker-Level
R Input	L	R
		GR 2

Preamp Output Crossover – –

AMP

Speaker Crossover High Pass Low Pass

GR 1

GR 2

GR 1

L– L+

R–

–	+	–	+
	L		R

L–

R+

GR 2

L+

R– R+

–	+	–	+
	L		R

Preamp Crossover – –

L– L+

R–

–	+	–	+
	L		R

L–

R+

L+

R– R+

–	+	–	+
L			R

Front Speakers Rear Speakers

Application 2

Application 4

3-Channel Bi-Amplified System with	L
Non-Fading Mono Subwoofer	Front
	L

R	L	R
Preamp or		Rear
Speaker-Level
R Input	L	R

2-Channel Bridged

2-Channel Input

L R

Output

	Group 1	Group 2
Mode	Stereo	L+R
Group 2 Input	–	GR 1+2
Speaker Crossover	High Pass	Low Pass
Preamp Crossover	–	–

GR 1

GTQ

AMP

GR 2

		Group 1	Group 2
	Input Mode	R	R
Group 2 Input		–	GR 2
Speaker Crossover		*	*
Preamp Output Crossover		–	–

*Set to Low Pass for subwoofers, High Pass for satellites

R	R
GR 1	GR 2
GTQ

GR 1	GR 2
L– L+	L– R+
R–	R+

–	+	–	+	–	+
	L		R

Front Speakers Subwoofer

Satellite Speakers

or Flat for full range.

AMP	GR 2
GR 1
L–	R+ L– R+
– +	– +

L R

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