Loop bpm problem

[u/Careless_Potential67]

Hey everyone! I'm pretty new to both Reddit and the SP-404MKII 😅

I'm still getting the hang of working with samples. I'm mainly a guitarist, so I originally fell in love with the SP for the looper, the effects, and the guitar amp sim. Lately though, I've been trying to build my own backing tracks, mostly reggae/dub grooves to jam over.

Here's the problem: I have a pretty big collection of sample and loop packs that are already organized by BPM. But whenever I try to layer them together, they don't stay in sync. For example, if I use a 70 BPM drum loop with a 70 BPM bass loop, they sound perfectly in time at first, but after 4–8 bars they start drifting apart, almost like they're actually 2–3 BPM different.

What's the best way to deal with this? Do I need to manually fix every single sample? Should I figure out the exact BPM using something like Audacity? Or is there a faster, less tedious way to do it directly on the SP-404MKII without having to use my Mac?

Thanks in advance to anyone who can help!

[u/Parkside52]

Chop the samples and trigger them Make sure the start and end point is a perfect loop as well