Alpine R-A90S Owners Manual - Page 15
Speaker + Subwoofer System
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e unit. If 4 Speaker + Subwoofer System When using the 4 Speaker + Subwoofer System, set each switch as follows. Input Channel Input Channel Crossover Mode Crossover Mode Crossover Mode Selector Switch Selector Switch Selector Switch Selector Switch Selector Switch (CHANNEL-3/4) (CHANNEL-5/6) (CHANNEL-1/2) (CHANNEL-3/4) (CHANNEL-5/6) EN 3/4 5/6 OFF OFF LP FR parately) Speaker Input Level Switch ES [LO] Remote Turn-On Lead Head Unit, etc. Dual Voice Coil Subwoofer System Series connection Parallel connection * If the connected head unit does not have a Speaker Output and RCA Extension Cable ( ) cannot be used, you can use the Speaker-RCA Conversion Cable ( ) (sold separately). For details on how to make a connection, see "About Connecting to the Speaker Input Level System" (page 18). • For the 2 Subwoofer System/Dual Voice Coil Subwoofer System, make sure that the minimum impedance exceeds 2 Ω in total. In addition, the Power Output listed in the SPECIFICATIONS (page 20) is the specification with the total impedance value. 13-EN ALPINE R-A90S 68-35792Z94-A (EN/FR/ES)