Single Voice Coil
[one_half]
Two 2 Ω subs wired in series to 4 Ω

Two 4 Ω subs wired in series to 8 Ω

[/one_half]
[one_half_last]
Two 2 Ω subs wired in parallel to 1 Ω

Two 4 Ω subs wired in parallel to 2 Ω

[/one_half_last]
Dual Voice Coil
[one_half]
One DVC 2 Ω sub wired in series to 4 Ω

One DVC 4 Ω sub wired in series to 8 Ω

Two DVC 2 Ω subs wired to 0.5 Ω

Two DVC 4 Ω subs wired to 1 Ω

[/one_half]
[one_half_last]
One DVC 2 Ω sub wired in parallel to 1 Ω

One DVC 4 Ω sub wired in parallel to 2 Ω

Two DVC 2 Ω subs wired to 2 Ω

Two DVC 4 Ω subs wired to 4 Ω

[/one_half_last]