Hi Folks... I wanted to replace the noisy fan on my Munsters Spike2 Power Supply but also maintain the CFM (and even increase it)... but as you know, the 40mm fans have their limits if you want to stay quiet and maintain the CFM.
I made a small manifold that allows you to easily put a 60mm fan into the stock 40mm mount on the Spike2 Power Supply... the manifold uses a 'dummy' fan frame to replace the original fan and then sticks up and out but still flush with the backbox.
Here is a google album showing before, parts and after - https://photos.app.goo.gl/8DDXhdbAXgxSeUwE7
Original Stern Fan 34dB 11.3 CFM
Pinball Monk Quiet 13dB 5.5 CFM
60mm Adapter 19dB 12.6 CFM
I cannot hear the 19dB fan in a home environment and it has slightly increased cooling over stock!
If people are interested I think I will make up about 25 kits... I can do a kit with the manifold only ($10) and manifold,screws,fan ($20).
NOTE: The kit won't have a Noctua fan, but one that is actually quieter, the Noctua doesn't have a 2-pin connector so it is not 'Plug and Play' it is just one fan I used to test it out.