 The mixing started at Chalice Recording Studios, but moved to Grohl's house as engineer Alan Moulder said it was the way "to make it sound like your garage." Since Grohl's mixing console was not automated, at times four people — Vig, Grohl, Moulder and engineer James Brown — had to work simultaneously on the board, something Grohl found interesting because every song was done differently and "even the mixes sounded like performances" The mixes were tested out in the cars of the band members and Vig, as they felt that "if it sounds good on a lousy stereo, it will sound good anywhere".
