basic stereo system?

I am using this head unit Pioneer DEH-1200MP http://www......com/item_21461_Pioneer-DEH-1200MP.html General Features:     In-dash AM/FM, CD, CD-R, CD-RW, MP3, WMA player     Detachable face     Single line text LCD display with 8-character text     Large rotary volume control is simple to use     Red button lighting     New pioneer anti-dust design     CEA-2006 compliant amplifier     Power Output:         Peak: 50 watts x 4 channels         RMS: 22 watts x 4 channels (Pioneer Rated)         RMS: 14 watts x 4 channels (CEA2006 Certified)     CD Text Display     MP3 ID3 Tag Display (Title/Artist/Album)      I am also using these 6x9" speakers along with it.     Sony     Part Number:XS-R6944 General     Product type Car speaker     Dimensions (WxDxH) 3 in     Weight 2.4 lbs     Color Black Speaker Features     Series Xplod     Speaker Type 4-way - Passive     Speaker Diameter 6" x 9"     Nominal (RMS) Output Power 50 Watt     Max (RMS) Output Power 300 Watt     Response Bandwidth 50 - 22000 Hz     Input Impedance 4 Ohm     Sensitivity 89 dB     Connectivity Technology Wired     Detachable Grilles Yes Speaker Details     Features Car speaker - 6" x 9" - 4-way - 50 Watt - 50 - 22000 Hz - 4 Ohm - Wired     Driver Details Car speaker : 1 x Woofer driver - Highly Oriented Polyolefine (HOP),     Car speaker : 1 x Midrange driver - Polyethylene naphthalate (PEN),     Car speaker : 1 x Tweeter driver,     Car speaker : 1 x Super tweeter driver Is this match up of components ok? I am getting great highs but almost no bass with bass setting turned up .

84 c-10 Chevy Truck

Sure, you can use those speakers and that head unit.  If you want more bass I suggest adding a subwoofer.

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Balance to the left or right. Does it have more bass with only one speaker playing?

I assumed the kit to wire the factory plug in would be correct. I assumed wrong and corrected the speaker wiring. It sounds a little better but could use a lot more improvement, bass is still not good. I think my biggest problem now is that the speakers are in a free air environment and not in some type of box.???

Would a small amp help with these speakers?