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I have been running my cts1200 now for 4 months with noctua 12v fans in serial and no issues. Completely silemt and cool to the touch even after house parties with continous loud music for a whole...

Dear Rob!

Thanks for the hint connecting two 12V in series.

I did it today, and it is more silent than silent. I used ULN NFA8. Not much airflow (35m3/h) compared to the papst, but hopefully...

Hey Rob
I will try them out!
I see there is a three pin connector. One pin is for the controller that I can just ignore? I'm talking about the Uln fan. seems to be their most silent 80mm fan

so you will run both fans off one connector?

Im still happy with papst, but I would like it to run quieter for those late night sessions with low volumes, as I can still hear them with music...

Thanks again Rob for the tips! it's like getting a new amplifier, and I now realize how annoying the original fan noise was before the change

And my goodness how good the CTS amp sound with...

Just installed Papst 8414ngl fans in my cts1200 and it's excellent! Just as quiet as a fairly new laptop. I can just hear them from listening position, but with quiet music 50dB or so, they disappear...

Both cts1200 and 2000 takes 80x80x25mm fans.
I don't think these amps need high airflow for domestic use. Ran the 2000 a whole evening with fans disconnected, and on fairly high levels. It was warm...

Hi Rob
I have a 1200 and a 2000. They both have 24v fans.
Thanks for the tip. I will do a search for those.

Yes cutting away away the mesh should really help.
These amps are lovely sounding,...

Just swapped out original fans for some that where claimed silent.
Really no difference...
I guess a lot of the noise is actually turbulence of the air entering and exiting the case

Sebackman:...