Polk Audio SR 124 Owner's Manual page 5

WIRING FOR SR104/124DVC
DUAL VOICE COIL SUBWOOFERS
2 Ohm Parallel Wiring
Note: SR104/124DVCs voice coils are wired in a parallel 2 Ohm
configuration from the factory. No additional wiring required.
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2.6 Ohm Series/Parallel Wiring
Note: SR104/124DVCs are wired in a series/parallel 2.6 Ohm
configuration. Please note jumper location for this wiring.
4 Ohm Series/Parallel Wiring
Note: SR104/124DVCs are wired in a series/parallel 4 Ohm
configuration. Please note jumper location for this wiring.
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