JBL A3000GTi, A6000GTi owner manual To 2CH/BR, Subwoofer System, Or less

MAKING THE CONNECTIONS

A6000GTi SPEAKER

CONNECTIONS

The A6000GTi is a 2-channel amplifier designed to drive subwoofers only. The left and right input signals are combined inside the amplifier to provide a mono output signal, no matter which output mode is selected.

The A6000GTi can be connected to two independent speaker systems in

2-channel mode. It can be connected to a combination of subwoofers configured as a single load with its channels bridged or connected in parallel. Bridged channels will provide high output voltage for driving loads with a nominal impedance of 2 to 4 ohms. Connecting the channels in parallel will provide the high current necessary to drive loads of 1 to 2 ohms.

Figure 7. The JBL A6000GTi subwoofer amplifier is set to bridged mode to drive a subwoofer system. Only use this mode when the nominal equivalent or total impedance of the speaker system is

2 ohms or greater.

Figure 8. The JBL A6000GTi subwoofer amplifier is set to parallel mode to drive a

Set Output Mode	A6000GTi Amplifier
to 2CH/BR	(partial output panel)
(on input panel)

See “Setting The Crossover”

on Page 8Subwoofer to Adjust Crossover Controls

System

2 ohms or more

Set Output Mode	A6000GTi Amplifier
to PARALLEL	(partial output panel)

Included below are three application diagrams that will help you plan your A6000GTi installation. Figures 7 through 9 show how to configure the JBL A6000GTi subwoofer amplifier for bridged-mono, parallel-mono and

2-channel operation (see Setting Up the GTi Amplifier).

subwoofer system. Only use this mode when the nominal equivalent or total impedance of the speaker system is less than 2 ohms.

NOTE: A jumper is added between the + terminals.

(on input panel)

See “Setting The Crossover” on Page 8

to Adjust Crossover Controls

jumper

Subwoofer

System

IMPORTANT: If the nominal impedance of the speaker system is close to 2 ohms, you may try both bridged and parallel configurations to determine which one performs better. Remember to set the output mode switch to the appropriate setting when changing configurations.

NOTE: For simplicity, Figures 7 through 9 do not show power, remote and input connections (see page 5).

Figure 9. The JBL A6000GTi subwoofer amplifier is set to 2-channel mode to drive a pair of subwoofers or subwoofer systems with nominal equivalent or total impedances of 2 to 4 ohms.

		2 ohms
		or less
Set Output Mode	A6000GTi Amplifier
to 2CH/BR	(partial output panel)
(on input panel)

See “Setting The Crossover”

on Page 8

to Adjust Crossover ControlsSubwoofer System

2 to 4 ohms

Subwoofer

System

2 to 4 ohms

6