Pro Powertm | JBL W12GTi, W15GTi, W10GTi

the other coil’s magnetic gap. This will	Connecting Your Subwoofer to
cause magnetic braking, which will slow	an Amplifier:
the cone’s motion and prevent damage
due to overexcursion. For a GTi Series	Configuring the voice coils:
woofer, Xmax is determined by the amount
of voice-coil overhang between the first	Figure 4. Terminal locations
and second top plates. See Figure 3.
Thermal power handling is far superior
to a conventional DVC woofer using
voice coils of a similar diameter and
length because Differential Drive provides
twice the heat-dissipating surface area
and two top plates to transfer heat to
the magnet-cover fins.
Figure 3. JBL dual-gap design

Note: Unlike conventional DVC subwoofers, the two sets of terminals are configured so that both positive (+) terminals are on one side of the frame and both negative (–) terminals are on the other side. GTi Series subwoofers are shipped with terminal jumpers installed which configure the two 6-ohm voice coils in parallel for a 3-ohm load.

Note: Both voice coils MUST be connected to the amplifier in series or parallel.

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