Originally Posted by Andy J Dampier
and also, Bad Horsie was an ash bodied guitar....for thicker tone...(why not mahogony?).
Take a Stratocaster.
Put heavy guage strings on it.
Tune it to drop-C
Repeat with a Les Paul.
I GUARENTEE you that, through a good crunchy high gain amp, the strat will sound heavier. It's counter-intuitive, because mahogany is the first body wood that comes to mind for a "heavy" sound, but mahogany is really more of a lower-mid sort of thing. The frequencies it emphasizes are great for a standard-tuned guitar- it'll give you a nice, fat sound. However, as you detune, what you really need is definition. Alder has more of an upper mid prescense, with great treble sparkle and firm if not overprominant bass. When you drop down to C or below, alder IMO just comes alive: you get this amazing deep attack and huge resonance.
I set up my strat for bari tuning while trying to transcribe a Strangers With Candy riff, and even with 9-52's on it (read: flabby strings), i was so floored by how massive it sounded that i just NEEDED to get a 7. Turns out it wasn't just the tuning, and if i ever have the cash, i'll be going to Eddie for a custom alder-bodied 7-string.
I think the bigger question though would be basswood vs. alder, seeing as most of his Jems prior to ALS are basswood... Personally, i feel basswood has a very "neutral" tone which i rather like, but once you've heard an alder guitar detuned...