The Kobra 2 Max is too loud - Replacing the noisy PSU fan.

Just did mine cause stock fan was going out. I used the Noctura buck converter. All plugged up super easy! Thanks for the vid!

I have that same Dewalt soldering station and love it. It does work really well. Great video overall. Kudos

I find it rather interesting how different people can be bothered to such drastically different levels by different noises. I've seen so many 3d printer videos where they complain about how loud the printer is, with my kobra 2 being no different, but these noises do not bother me in the least. I'm bothered more by the sound of the bearings or motors than I am the fans. That's not to say the fans are silent, quite the opposite in fact, but it just isn't bothersome for me. It's just background noise that I can tune out easily so the idea of replacing a perfectly functional fan just to try and make things a bit quieter is, in my mind, a ridiculous thing to do. Personally though I have found that proper ducting can make a bigger difference than an expensive fan. But I'm glad you found a solution that works for you.

ho wow!, my neighbour love you hehehe the noise... wow!

@mark4jr I only see DC 24V to 12V 5A step downs here in the UK on ebay instead of the DC 24V to 12V 10A you linked to :( - please advise... Is it because of our power difference?

hey i found one that looks exactly like yours, it is the "daygreen DC-DC Converter 12V 24V to 5V 15A" but instead of 120w it writes 75w, would it work?

Can you confirm the CPU Fan connector? Looks like a JST-PH2.00mm. If it is, could save your self from cutting/splicing wires and just run a single solid wire. If I find out before you answer I'll try to remember to update.

Would it not be easier to buy 24v fan and just replace it? You can get ones turned for silence, or even go 25mm thick which tend to have a less annoying tone so perceived volume is lower since you're printing a new shroud anyways.

One thing I would suggest is to check on the PSU fan what voltage it operates... all my psu fans are 12V even if the psu outputs 24V or 48V (ender, meanwell, ebike or prusa psus)... or you could check with a multimeter BUT BE VERY CAREFULL!!!

Have you did this AFTER your warranty has expired ? Its loud but I dont wanna mess with warranty.

Does anyone know the dimensions of the stock fan?

I see the feet on thingiverse, which ones did you print?

Noctua do make 24v fans btw.

now youll find that the mainboard fan is almost as loud lol. im going to replace that one as well.