With respect to the post in question, modifying a ... well, let's be charitable and call it a "low cost" supply... is not a good idea. One thing I've noticed about some of these cheap-as-dirt solutions is they make it a point to ride the thresholds of all the components involved. Caps passing 15vDC will be rated at 15vDC for instance. You have very little margin for error, and an otherwise simple change could remove what remaining grasp on stability it has in the first place.
Further, with all due respect to the OP, using a constant current supply to power a device designed for constant voltage is not novel, it's not "thinking outside the box", not clever, not frugal... it's just wrong. CC supplies are the wrong tool for the job. Can you hack it to work? Yeah, maybe. Or you can just use the right tool. Why would you risk the "load" device and the "supply" device trying to force the supply into doing something it wasn't designed to do, when there are no shortage of devices actually designed to do it? There's no sense in it, beyond a one-time experiment to say you managed to do it.
And yes it will be noisy. PSU noise is defined as undesired variation in the supply voltage. Guess what a CC supply does? It varies supply voltage! It's not intended to be a low-noise supply. You put additional demands on your (redundant) regulation and filtering stages trying to undo the mess you made with shoe-horning the wrong device in there.
Look, I understand cost-cutting, but this race to the bottom for the cheapest way to turn overwhelmingly powerful sources of energy into something to power our pet projects is foolhardy. I'm not trying to be insulting, but this is serious stuff. For reals. Everyone picking up a soldering iron needs to understand when it's OK to cut costs. Where life safety -- and not JUST YOURS, by the way -- is involved, that is the wrong place. Be a big shot. Spend $15 on a safe, credentialed PSU.
I am genuinely sorry for any hurt feelings this causes, but I'd rather see you all flame me than hear about your funeral. And the many.. many.. voices of reason along the way trying to (IMHO) gently explain why this was a bad idea from post one fell on deaf ears. So I'm going to be blunt because I care.