Blog Forums DIY Speakers and Subwoofers QSC Powerlight 3.4 for two Sealed UM18-22 Reply To: RE: QSC Powerlight 3.4 for two Sealed UM18-22

#14902
splinter
Participant

The power amp mods are all complete. I had to get a small buck converter to take the amp fan header voltage down from 24v to 12v to match the Noctua fan. Made a big improvement as the old fan was super loud.

I ended putting the low noise adapter on the fan, spins a bit slower but still puts good amount of air through. I don’t think this amp will be driven to the extent that more cooling will be required.

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