Help Me.. HU/Amp/Sub..

[solaris=amazing]

First off, this is what i wanna do. Right now i got a good JVC Head unit thats powering all my 4 way pioneer speakers. What i wanna do is only get a mono amp, add 15'' sub to handle naturally ALL the bass. I went to circuit city, just to check out lots of subs and differant amps and such, then asked a salesman there what HE thinks i should do. He suggested getting the speakers amped AND the sub. I don't want that though, cause can't i just have the mono/sub connected to the head unit and let it handle the bass, then basically lower all the bass on my head unit(going to speakers) then pretty much crank it all the way to 40 volume(max is 50). Cause right now, i can get the volume to about 24-27 with good bass and LOUD on and it sounds real good, no clipping distortion at all. Now if i lower the bass all the way, and still leave LOUD on, i can go all the way to 40-43 and it sounds really loud with no distortion or clipping. As far as how loud i mean is ear bleeding loud, so thats pretty good for just the head unit. In the end, i'd like to have just that, the hu running on no bass(so i can blast it past 40) and the sub providing all the bass.

ps.. the h/u has 2 female's on back, one red one white(rear left rear right etc) so hooking up the mono would be easy.

[SickVette]

Salesman is correct. If you want volume without distortion and clipping amp the mids and add a sub with an amp.

[Navy I.C.]

The point is you want to get the extra stress of powering the speakers off of your HU circuitry and let the HU concentrate on delivering a good clean signal to the amps. The end result is better volume with less distotion at all volume settings. So basically setting 20 will sound better than setting 40 used to.