Hi, bassjigga. My custom 8-string Europa has a flame maple body, but I'm planning on getting a replacement for my stolen 6-string Elan-plus (which was also maple-bodied).
I am planning on getting a replacement Elan or Europa -with a mahogany body- based both on the desire for a (relatively) different sound, and also based on conversations with Mica -who has generously shared her experience on the subject.
Mica told me that -first of all- neck-thru basses -at least on Alembics, with/due to their construction methods- tend to have the smile EQ curve to begin with... this is what you've described (at least with focus on the highs and lows). Alembics NECK-THRUS tend to have this sound to begin with.
Mahogany is said to have a warm/neutral tone that enhances yet rounds out/enriches the sound of the other woods.
Keep in mind that Alembics' position is that -other than the electronics- the NECK WOODS have the biggest effect on the sound... then the body wood, then the top (and if applicable, back) laminates.
Also, coco bolo (and related woods of the family, like kingwood, rosewood, and tulipwood) consistently enhance this quality even more, having a complex tone with rich, full, lows, crystaline, piano-like highs, and a dampened mid-range. Further, mahogany works well with these woods and assumes most of their character while rounding out the tone.
So, for this reason, my replacement 6-string will have a mahogany body, coco bolo top, with ebony, maple, and mahogany in the neck.
Remember, as the neck woods affect the sound more than the body, you should educate yourself as to the effect of putting some mahogany in THE NECK in addition or in place of in the body.
And -if you don't know about it- find out about putting ebony in the neck... it's incredibly and indescribably awesome. A couple club members have customs with BOTH ebony and mahogany in the neck. (So maybe they could comment, if you asked, or if they see this). Check out the custom archives, Thunder and Lightning was a recent example, but there's at least 1 other.
P.S. I also have mid-range quick-change boost/cut switches on my custom... and they're VERY useful.
Good luck, hope this was useful.
(Message edited by the 8 string king on October 01, 2006)