JBL GTO755.6 - Manual (Page 5)

Subwoofer Rear Front
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APPLICATIONS – GTO755.6
The GTO755.6 can be configured for
6-channel, 5-channel or 3-channel
operation, as shown in Figures 9
through 11.
INPUT MODE switch:
• Use INT (internal mode) to send a
signal from the front and rear inputs
to the subwoofer.
• Use EXT (external mode) when
sending a dedicated signal to the
subwoofer inputs; e.g., if your source
unit has a subwoofer output.
NOTE: For simplicity, Figures 9 through
11 do not show power, remote and
input connections.
NOTE: Minimum speaker impedance
for stereo operation is 2 ohms.
Minimum speaker impedance for
bridged operation is 4 ohms.
Subwoofer Rear Front
Subwoofer Rear Front
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Figure 9. 6-Channel operation: GTO755.6 amplifier driving full-range front and rear speakers and a pair of subwoofers.
Subwoofer Rear Front
Rear Front
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Figure 10. 5-Channel operation: The same as Figure 9, with the subwoofer output bridged to drive a single 4-ohm subwoofer,
providing the speaker with more power.
Figure 11. 3-Channel operation: GTO755.6 amplifier configured for 3-channel operation, where all of the channels are
bridged for a subwoofer and a pair of component speakers.