Posted: Sun Apr 10, 2022 4:00 Post subject: Reducing Bluetooth Audio Interference
Hi there, I have a Sony Bravia TV which I like to use with bluetooth headphones (I live in a share house). I have it set up and working, but there is a certain amount of interference on the headphones. Just enough to be annoying.
I'm fairly confident the interference is caused by the 2.4GHz wifi on my Linksys WRT1900AC router running DD-WRT v3.0-r48432 std (03/01/22)
Are there any settings I can use that will reduce the amount of bluetooth interference? I have updated the system firmware on the TV which definitely helped.
Joined: 31 Jul 2021 Posts: 2143 Location: All over YOUR webs
Posted: Sun Apr 10, 2022 8:14 Post subject:
Ive moved this to the appropriate subforum to increase visibility and get you specific help.
Im not familiar with your router, but, on mine for instance, there is a advanced wifi setup page for both 2.4/5Ghz radios that has a setting called `Bluetooth Coexistence Mode` with a drop down menu [Disabled] which is default, Enabled or Preemption.
IDk if this is available on yours; mine is a Broadcom based unit while yours is Marvel.
If your bluetooth headphones are firmware upgradable, do it, usually theres some app on android store or apple store from the manufacturer for this; some headphones arent upgradable; some are depending on price/model/brand
Bluetooth operates on 2.4Ghz, so does some cordless home phones and other equipment you may or not have; try to keep headphones and router away from any of these sources.
Your move to upgrade your TV firmware was wise; good on you, most of the time upgrades are a good thing to no matter what it is.
Hi, thanks for the reply, and for putting my thread in the correct place. Bluetooth Coexistance Mode sounds exactly like what I need. Unfortunately I can't seem to find it in my settings. See attached screenshot. I'm happy to update to the latest version of DD-WRT and erase nvram, but as I live in a sharehouse I'll need to find a time to do this that won't disrupt my housemates.
Joined: 04 Aug 2018 Posts: 1373 Location: Appalachian mountains, USA
Posted: Wed Apr 13, 2022 14:57 Post subject:
FWIW (prob not much!) Some or all of these marvell routers are known to propagate interference from one of the USB ports (I think USB 2, the faster one) into the 2.4G wifi/bluetooth band. AFAIK, it won't occur if you have nothing plugged into that USB port.
Q: What do you have when you have a corporate lawyer buried neck deep in sand?
A: A shortage of sand. _________________ 5 Linksys WRT1900ACSv2 routers on 50474: VLANs, VAPs, NAS, client mode, OpenVPN client (AirVPN), wireguard servers (via AirVPN port forwarding) and clients (AzireVPN and AirVPN), 3 DNSCrypt DNS providers via VPN clients.
I have had some success by setting my regulatory domainn to Australia (this is where I live) and changing the channel to 13. I believe that in the USA the normal channel range is 1 to 11, so by using 13 I get less interference. But one of my long-range USB wifi N adaptors no longer seems my SSID