Tried another fan setup:
- rear 92mm x 25mm
- top replaced older black fan (no pwm) with new 140mm x 25mm
At first it was looking great, but noise and interference was aweful because of the rear fan. There were even some vibrations with case although i used rubber washers for less direct contact :(
In the end i switched back to the 92mm x 15mm. To keep noise levels at acceptable levels, i added 2 low-noise adapters (150 and 50 ohms) to the smaller fans, that resulted in a very accetable noise level.
Regarding dust filters, sidepanels are still untouched. Bottom and rear dustfilters do their job, i need to wait for a longer time period to see how much dust is blocked :)
Sidepanels will get dustfilters if i find a very strong dualsided tape, right now its difficult to keep it sticking the nylon dustfilters to the sidepanels.
Setup with rear 92mm x 25mm
back to previous rear fan :(
new top 140mm x 25mm fan - best fan ever made by Noctua :)