QUOTE(Woodinville @ Jul 11 2006, 21:23)

Does anyone aside from me find it absolutely ironic that of all bands, Iron Maiden is the one doing this?
I don't really understand you. Iron Maiden albums of the 80's and early 90's were very "silent" (RG values around 0) and very dynamic indeed, as were other recordings of that era. Maiden really started overcompressing their albums pretty late, in the 00's.
For live performances, well, that's a different story. But I know that Metallica, Manowar and possibly Spinal Tap have always been louder

QUOTE
Flame shields up: Metal is often quite compressed by the very nature of instruments used. Distorted guitar is by definition heavily compressed in a way that has clearly pleased players and audiences for decades, which is part of the charm of an overdriven amp/guitar combination. Metal players push the distortion way up, resulting in even less natural dynamic range.
True. I once made a metal recording that, much to my astonishment, had a flat dynamics profile before I had even gotten a chance to mess with the dynamics! That's RG value of -9 with just plain normalizing!
You are of course right. Distorted electric guitar has basically zero dynamic range. But what makes dynamics in metal is, of course, drums. A standard drumkit has a
huge dynamic range, I would imagine around 0-120 dB. How much dynamics is apparent in a metal recording is largely dicated by how loud the guitar track is mixed and how loud the drummer beats the drums.
Most 80's metal recordings by bands such as Iron Maiden, Metallica and Slayer exhibit considerable dynamic range because the drums are given a lot of space to breathe. Nowadays the guitar is mixed so that it's about the same level as the peak levels of the drums, so that the dynamic range of drums is limited to the upper couple of decibels.
Also, even more sadly, the de facto standard of today is to use a
trigger with drums, that is, replacing actual drum hits by a sample from a drum machine. This allows for zero variance in dynamic range between consecutive drum hits and it basically reduces the drummer to a mere metronome. This is by far the worst thing ever happened to music (at least to metal) and I religiously refuse to use triggers whenever I get the change.