Impedance vs. channels situation
OK I'm starting to plan out a few things for a home audio setup I will make by the end of the summer.
The first question I have is about impedance with receivers. I see a lot of receivers with a spec list having the RMS wattage listed in 8 ohms, but nowhere does it mention the stable impedance. Can I just assume that it is 8 ohm stable or will I be able to go down to 4ohms? Maybe I'd have to ask the manufacturer of the receiver, but until then I'm asking the real professionals, you guys .
The second question I have is about amplifier gains. Say I get a receiver rated at 125wRMS x 6 @ 8ohms and I want to push a 8ohm speaker rated at 50wRMS. In most receivers, will I be able to set the gain for each individual channel or am I SOL at this point? IF I am SOL at this point, would it be practical to attach a resistor in series with the speaker so that the channel outputs 50wRMS at that specific resistance load?
This might be hard to follow, but any help is appreciated.
Vehicle: 1996 Honda Civic EX
Head-Unit: Alpine CDA-9856
Subwoofer: 2 12" Fi SSD
Box: Sealed: approx 1.1ft^3 per chamber
Sub amp: Kicker ZX1000.1
Components: JL XR650-CSi
Comp amp: Profile AP1000
Before you accuse me, take a look at yourself.
Refs: phrozen5100, 1meanGTA, famous_78