In the perpetual quest to upgrade/change my AV basement setup, I purchased a used Extron DXP 8×8 HDMI matrix switch. After receiving the unit and performing a factory reset, I was happy to see it worked perfectly in my setup, except for one thing. Unlike the CrossPoint Ultra I used for analog devices, the DXP had a cooling fan. The fan wasn’t loud but was noticeable when was nothing playing. The location of the switch was next to my couch which made the issue more pronounced.
The DXP uses a standard size fan: 60x25mm, 12V, 3-pin. That made an upgrade easier. I decided Noctua’s NF-A6x25 FLX would be a suitable replacement.
Installation is a straightforward process:
- Remove the Philips screws around the top of the case.
- If the switch has eight inputs, remove the daughter card for the top inputs. This is for access to the fan header.
- Unplug the fan from the motherboard header
- Remove the Philips screws from the fan grill.
- Remove the fan, rear screw bracket, and grill.
- Reverse the above steps to install the new fan.
- (Optional) Install one of the “Low-Noise Adapters” to reduce the fan speed and noise. Be sure to monitor the temperatures of the switch to ensure it doesn’t overheat.
Honestly, the “Low-Noise Adapter” included with the fan made the most significant change to the noise of the switcher. With the Noctua fan running at 2400RPM, the unit is inaudible to my ears.
Why use a matrix switch? For me, there were a few benefits of the matrix.
- The switch allowed me to output the same source to multiple destinations. For example, I could have my PS4 going to my Projector, TV, and PC capture card simultaneously.
- I could route a unique source to different destinations at the same time. A real case scenario was when my wife played PS4 on the projector while I played a different console on the TV using a RetroTink5x.