GX-A604 - JBL Car Audio Service Manual (repair manual). Page 5

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8
gX-a604 speaker connectIons: 3-channel operatIon
Minimum speaker impedance: 2 ohms each (left & right speakers); 4 ohms (subwoofer)
• Connect the left and right speakers to the FL and FR (+) and (–) terminals
• Connect the subwoofer to the RL (+) and RR (–) terminals. (The rear-channel Bass Boost control makes the rear channels preferable for subwoofer
connection. See Set The Bass Boost, on page 23.) 
NOTE: You can connect two 2-ohm subwoofers in series to maintain the required 4-ohm 
mimimum impedance for the subwoofer channel.
Speaker
Fuses 20A
Front Left Speaker
Front Right Speaker
Subwoofer
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