Alpine R-A90S Owner's Manual page 15

4 Speaker + Subwoofer System
When using the 4 Speaker + Subwoofer System, set each switch as follows.
e unit. If
Input Channel
Selector Switch
(CHANNEL-3/4)
parately)
* 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.
Input Channel
Selector Switch
(CHANNEL-5/6)
3/4 5/6
Speaker Input Level Switch
[LO]
Remote Turn-On Lead
Head Unit, etc.
Dual Voice Coil Subwoofer System
Series connection
Crossover Mode Crossover Mode
Selector Switch Selector Switch
(CHANNEL-1/2) (CHANNEL-3/4)
OFF
Parallel connection
ALPINE R-A90S 68-35792Z94-A (EN/FR/ES)
Crossover Mode
Selector Switch
(CHANNEL-5/6)
OFF LP
13
-EN
EN
FR
ES