i think there's a misunderstanding of what "1/4 notes" actually means in relation to Tempo and Delay repeats.
@rnjscooter - what is the tempo of the song you're playing?
let's say it's 128 bpm - this is actually how fast your band is playing the song.
now you've set your delay subdivisions/repeats to be 1/4 notes - that means if you hit the guitar on 1, the repeat would sound at 2, 3, 4... etc. right?
is that what you actually want? that's the first question that needs to be answered. do you actually want 1/4 note repeats.
let's say you do. ok. well by chance, 128 bpm IS 469ms of delay with 1/4 notes at 128 bpm.
so just set that preset to 128 bpm and bam, your delays will be at 469ms like you want.
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but now let's say you start with your nice preset at 469ms delay. but the band plays SLOWER - and they end up playing at 107 bpm.
your 469ms delay is no longer on 1/4 notes anymore relative to how fast the band is playing - do you understand that concept? to the Axe it's playing "quarter notes at 128 bpm." but in reality compared to the song itself, it's not 1/4 notes. the Axe can't know how fast you're actually playing.
setting Tempo on the Axe doesn't dictate what in reality is a 1/4 note.
so if you instead set your Tempo to 107 bpm, then your delay WILL be a 1/4 note relative to what the band is doing. does that make sense? and instead of reaching over to the Axe front panel and turning knobs to dial in 107 - well how would you have known that anyway - that's what Tap Tempo is for. you tap along with whatever the band is actually doing, and then your delays will sync up - assuming the 1/4 note or whatever you picked is what you actually want.
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so the actual question is why do you "need" a 469ms delay? are you using the delay to tell the band how fast to play? "go as fast as my delay repeats"?
if not, you'll probably just end up tapping the tempo in when the band starts, and that 469ms delay will change immediately. does that make sense?
can you answer why you want/need a 469ms delay in this example?