From Longman Dictionary of Contemporary Englishcrank something ↔ up phrasal verb informalto make the sound of something, especially music, louder We cranked up the volume. → crank→ See Verb table
Examples from the Corpus
crank up• That will crank it up a few more notches.• By about six, they're cranking the music up loud again.• She pushed a cart to the bed and cranked it up over his lap.• Some people move away, they get A / C first thing and crank it up to Cold. 