Harman JBL GX-A604 Manuel Du Propriétaire page 14

gX-a602 speaker connectIons: brIdged operatIon
Bridged operation provides a single high-power channel for a subwoofer
Minimum speaker impedance: 4 ohms
Connect the subwoofer to the RL (+) and RR (–) terminals. NOTE: You can connect two 2-ohm subwoofers in series to maintain the required 4-ohm
impedance for bridged operation.
+12V
Fuse 25A
Speaker
Subwoofer
14