Sunn O))) make ritual music, not casual music. Both their albums and their live shows demand you completely surrender mind and body to punishingly loud guitar drone suffused with the menace of black metal and the obstinacy of minimalist art music. Yet even within the duo’s daunting catalog, their new self-titled album exerts a special pull. Though it’s the first one to strip their lineup down to just core members Greg Anderson and Stephen O’Malley, it feels like their biggest and most forbidding work yet. It certainly has the rest of their catalog beat as far as sheer density. Producer Brad Wood estimates each song has at least 130 tracks of guitar, all recorded at a remote Washington cabin where the duo’s amp noise could radiate through the surrounding wilderness. Past milestones like Black One and Monoliths & Dimensions felt big in the same way as a classic-rock longplayer that might blow an impressionable kid’s mind.…