Alpine CDA 7892 headunit problem

[GatorMan]

i have this head unit and it has three sets of preouts one front, one rear, and then one subs....the subs is 4 volt. When i plug the rcas into the sub preouts there is like no sound from the subs..then when i put it in the front preouts, the subs start pounding like hell. Whats happening? This is a brand new head unit..i mean it sounds really good but i want to know why the sub preouts are not working just in case later i want to add another amp for components or 6x9s.
Thanks Guys,

Alex

[cyoonak]

Try this....

Hold setup for a few seconds. Press the seek up or down till you get "SUB". Then press the BAND button till you can turn "SUB W ON".

That should turn the preouts on for ya.

If not, post back

Chris

[GatorMan]

no it didnt work:confused:
i did what you said and tested the sub preamp when i did that it did the same thing with no sub sound....then i put it back on the rear preamps and the subs hit hard. Anymore idead thannks
Alex

[MattBatt]

Is there a way to turn up the volume up on the sub outs. Have you tried reading the manual yet?

[Molson]

with SUB ON push the dial, subwoofer shuold be first, make sure its turned up. (Goes to 15)

[GatorMan]

yes i know...ive read the manual and everything i know it goes to 15 but when i plug it into the sub outs then the bass is gone but when i plug it into the rear outs the subs hit again??

[Molson]

bad preout then?

[GatorMan]

?????

[Molson]

I'm saying it sounds like you have a bad/dead pre-out.. Is the deck new? If so, bring it back and get it replaced.