Interesting. Unfortunately my ISP forces me to use their own modem/router combo unit, which is dual band. What I currently do is have my wifi extender set to only receive the 5 ghz band from the main router/modem. So in that sense, it's not sharing the 2.4 ghz band that most devices in the house connect to. I have my Innuos Zen hardwired into the wifi extender and have set the extender ethernet ports to 5 ghz, so in essence it's the only device on the 5 ghz band I suppose? My wifi extender broadcasts both 2.4 and 5ghz bands, and there are wifi devices that are on the 2.4 ghz band of the extender. I'm not sure if those wifi devices are polluting the signal or not. I'm not sure how the wifi extender isolates (if at all) wired connections vs wireless connections.I have a similar network setup for my bedroom rig. I find that using a dedicated 2.4 GHz band set to 20 MHz for the wifi extender gives the best SQ. No other 2.4 GHz clients connected. You can use a tri-band wireless router to do that. I don't have any other 2.4 GHz clients. So I just use a two-band wireless router.
I use 2.1 kg ground boxes with silver 14 AWG wires on the modem, router and extender. Connected to unused USB inputs. It does make a difference- lowers high frequency noise. Using silver DC-cables on the LPS's + upgraded fuses also makes a positive difference. I use HiFi-tuning silver supreme.
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