First and foremost, it's pertinent to know what size bass drum he's using and what kind of wood it is.
Granted heads do have a lot to do with sound there are other variables: pedal, spring tension, beater type, and technique are some in addition to the size and wood used to make the drum.
With that aside it sounds that he's got it tuned fairly tight- very little give is aparent with the batter head and with very little resonance I suspect the same is true with the reso head.
Check out Jeff Ocheltree's video in the John Bonham section of this page about tuning Bonham's kit, specifically the snare. Bonham tuned his drums like the jazz drummers of the '20-'60's (as he was highly influenced by them). He tuned his reso heads pretty tight- as Jeff says, think like you're tuning a snare reso head- and he used felt strips (in this case the EMAD muffling works in place of the strips) to focus the sound.
I hope this helps and is detailed enough to help you out.
If you need anything else give me a shout.
~AJ