Motorcycle stereo needs some mids and sub(s) (warning pic heavy

[Shameless]

I have a motorcycle, I have all the treble I could ask for, the things loud! however, I have very little mid range, and zero bass. I've seen some bikes that have done this, although I'm not working with the same type of fairings and luggage boxes as they do. wondering if you guys could help give me some ideas how to obtain this? Keep in mind, I don't want to just go cutting holes in my bike, unless subtle, and absolutely needed.

below are some pics of what i'm dealing with.

Click to read more...

 

[Shameless]

Another thing, I can't run a bunch of power through this due to the bike not being able to handle an extreme load, I'm willing to do an extra battery, or capacitor to make it work. Honestly, if I could get a good mid range, and a little boom out of this, I'd be thrilled, it's a bike, not a competition van full of subs, and I know I'm limited on options.

 

[Shameless]

ok, I realize this is a difficult thing to imagine, but I know its been done, so answer me this. can I get bass from a 4 or 6 inch speaker? if so, how big of a box will I need? my equipment is molded plastic, bonded together. if I can seal off the equipment I have, could I use it for smaller speaker boxes for mid range. I'm thinking either a bass tube, or a bandpass box with a tube curved to fire against the bike? Here are some pics of what I thought might work, they're kind of a crude interpretation but I hope you get the idea

 

[Shameless]

Or, are free air speakers what i should be looking into?

 

[Shameless]

anyone???