How to wire 4 single 2 ohm subs to 8 ohm

To wire 4 single 2 ohm subs to 8 Ω: Subs in series.

The other final loads these subs can make: 0.5 Ω, 2 Ω.

8 Ω: Subs in series.

Every balanced way to wire 4 single 2 ohm subs

Every balanced way to wire 4 single 2 ohm subs
Final load	How
0.5 Ω	Subs in parallel.
2 Ω	2 pairs in series, the two subs of each pair in parallel.
8 Ω	Subs in series.

Amp + to sub 1 +, sub 1 − to sub 2 +, and so on; the last sub’s − goes to amp −.

Each box is one voice coil. Wires that meet are joined; use proper terminals, not twisted wire and tape.

Left side of each coil box is its + terminal. 1A = sub 1, coil A.

Nominal loads: the real impedance rises in the box and with frequency. Only balanced layouts are shown, where every sub gets the same power.

To wire 4 single 2 ohm subs to 8 Ω: Subs in series.

With balanced wiring: 0.5 Ω, 2 Ω, 8 Ω.

Only if its manual says it is stable at 8 Ω or lower. Below that it runs hot, goes into protect or fails.