I have an Alpine CDE-100 and when I hooked up my subs and amp I would only get subs with radio and regular speakers for my ipod via usb and the cd player? I had a friend that use to install sound systems and he said everything was hooked up right. So how do i get the subs to work with all setting?

Make sure you are using the blue/white wire to turn the amp on. The blue wire is antenna remote and turns off when leaving tuner mode. The blue/white wire is amp remote turn on.

Could you check "SETUP", "Power IC", "ON" or "OFF"?

find the aux plug in the back of radio and run the the plug out so you can hook up your ipod or mp3 player they sell them in radio shack ask for the stereo plug in jacks

une or more speakers wires are touching ground or is in short...

opps did you hook up your amp ??? is it powered

just run a kill switch to the radio

In short, no.

The CDE-9843 cannot drive a sub of the type you mention without an amp, but you can fit a sub with it's own built-in amp.

As standard, the head unit has a basic in-built amp supplying 4 x 16w RMS at 4ohms but there is the facility via the unit's own menu to turn off the in built amp and use the output sockets as a pre-amp feed, but in reality if you want to drive an amp you'd be better off to start with a more highly specified head unit to begin with, even the next model up, the CDE-9845 is better suited as there are pre-outs for front and rear speakers.

User instructions are available from here.

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go into the menu of the radio make sure sub output turn on

Unfortunately, the rca outputs are to control an amplifier or crossover. They do make an ipod adapter for that radio, which allows you to control the ipod through the radio. Best Buy or any Alpine dealer should carry something for around $25.

I think the red/white RCA plugs on the back of the CDE-7858 are outputs for the sub-woofer -- they won't work for aux inputs like iPod.  According to Alpine dealers, the 7858 will not accept an aux input -- bummer, I had the same desire. R, Jim