JL Audio Subwoofe dimensions Wired directly to the amplifier

Wired directly to the amplifier:
A single 4Ω	speaker will present a 4Ω	load.
A single 8Ω	speaker will present a 8Ω	load.

With speakers wired in parallel:

Two 4Ω speakers will present a 2Ω load.

Two 8Ω speakers will present a 4Ω load.

With speakers wired in parallel:

Three 4Ω speakers will present a 1.3Ω load.

Three 8Ω speakers will present a 2.7Ω load.

•Do NOT use different impedance speakers when using multiple subwoofers!

•JL Audio recommends using subwoofers as part of a bi-amplified system using high quality satellite speakers like our Evolution line of coaxial and component speakers. We do not recommend the use of passive crossover components (coils) on subwoofers. These components may adversely affect the performance of a subwoofer.

•When dealing with exceedingly long port lengths, we recommend the use of JL Audio’s Flex-Port System. The Flex-Port tubing is flexible, allowing it to fit in otherwise tight locations. The Port mouths provide not only a convenient method of securing the port, but a smooth, rounded edge for the port termination as well.