JL Audio 18W6 - Manual (Page 2)

•Do NOT use different impedance speakers when using multiple subwoofers!
•JL Audio recommends using subwoofers as part of a bi-amplifi ed 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
fl exible, allowing it to fi t 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.
With coils wired in parallel, a dual 6
Ω
speaker will present a 3
Ω
load. With coils wired in series, a dual 6
Ω
speaker will present a 12
Ω
load.
With coils AND speakers wired in parallel:
2 dual 6
Ω
speakers (D6) will present a 1.5
Ω
load.
With the coils wired in series and the speakers wired in parallel:
2 dual 6
Ω
speakers (D6) will present a 6
Ω
load.
With coils AND speakers wired in parallel:
3 dual 6
Ω
speakers (D6) will present a 1
Ω
load.
With the coils wired in series and the speakers wired in parallel:
3 dual 6
Ω
speakers (D6) will present a 4
Ω
load.