Room with sonos AMP and Sub4 but the AMP is physically in a different room. Sub 4 connectivity issue

I get this point, but Sonos supports grouping rooms through the standard router wifi, and that includes HD atmos audio, which should be much more bandwidth then sending bass to a sub. In a situation where you’re playing TV audio and you can’t buffer the audio, yes, but I don’t think there is a technical limitation when you are streaming music.

I would argue that Sonos hasn’t enabled subs to operate through the wifi router rather than directly connected to the Sonos speaker/amp it’s bonded to mostly because it’s not a high priority development.  The volume of people who want to bond a sub to an amp with the amp a far distance away, with no TV audio involved,  is pretty low.  It may be a factor of just not breaking what isn’t broken just to appeal to a small set of protentional customers.  Indeed, there are probably more people who would use the feature to ‘cheat’ and try and move a single sub around to multiple rooms, rather than buy multiple subs or unbond/bond the speaker each time you move your sub.

The only comment I’d add is to consider the impact of “pollution” on the 5Ghz band.

This bonded 5Hhz device to device wireless link (sonosnet?) is taking channels from an already tight 5Ghz band. Like the way HP printers enable “Wireless direct printing” by default and drown out a full 80Mhz width of channels on the 5Ghz band.

Also with the bonded, it looks like the Sub 4 is a child of the Amp so the DHCP request passes through the Amp. Some DHCP servers don’t like this as it looks dodgy so I would say some people have reported issues like this.

It would be great to have an advanced option to completely disable all bonding device to device wifi broadcasting and just use the existing wifi network.

Anyway, I don’t care now that I know it works wired. 

Thanks again everyone

Well I specifically talked about non-TV playback, I do agree for that it’s problematic, but it’s not uncommon to have Amps in a tech room somewere with only speaker wires running to the separate rooms. When you want to use a Sub there and don’t have Ethernet you have a problem. And as said, this kind of setup worked fine with the Connect:Amp.

And also just to add…

The old connect amp is not a home theater device. So 2,4 ghz connection to Sub is fine. 
That also would probably work well for the Sonos Amp in music mode. The „problem“ imo is, that Sonos for the Amp would have to switch between 2,4 ghz standard wifi connection and 5 ghz internal home theater wifi each time depending on using music or tv mode. 
Edit: 

If there is no tv mode used (no hdmi connection) and also no rearspeakers bonded, the Sonos Amp could work the same like a connect amp. 
But I doubt Sonos will enable 2,4 ghz sub connection just for this rare usecase. 

The problem is that having the option to directly bond a sub to amp via 5 GHz, or bond a sub to amp via local wifi while losing TV audio capabilities...is probably too complex a decision for the typical Sonos consumer to have to make. While I agree that may people will  still use long runs of speaker cable and central location for amps, it’s not necessary with Sonos, and probably rather rare that a user wants these long runs and a wireless sub.

As far as this sort of setup working for the Connect:Amp, I’m not sure that wasn’t always the case. I could be misremembering, but Subs have always been required to directly bond with the speakers.  That may have been 2.4Ghz at one point, allowing for a greater distance between the sub and Connect: Amp, but it was always a direct connection, rather than connecting through the home router.

Unfortunately I have the same situation: Sonos Amps in central rack connected to speakers in remote rooms.  The amps were too far away from the subs in the room so would not connect via sonosnet and wouldn’t work on WiFi, so I went through the effort to connect the subs via Ethernet.

Unfortunately, now I have a new issue: the sub sound is delayed and the music sounds terrible and garbled.  I can hear the bass behind the music from the speakers. As I understand it this is because the amp plays the music directly, it is virtually instantly transmitted via the speaker wires to the speakers, but the bass signal has to to through my router first and then through the Ethernet to the Sonos Subs.   All of that takes just long enough to create a garbled mess.

This is massively disappointing and makes Sonos Amps and Sonos Subs really ineffective for any sort of whole home central distribution system.  I suspect this could be fixed with some sort of software delay from the amps to the speakers.  Has anyone found a fix for this or should customers simply avoid Sonos for a central distribution system.  I, unfortunately, have multiple rooms I already paid for.

Have you submitted a system diagnostic within 10 minutes of experiencing this problem, and called Sonos Support to discuss it? Don’t post the resulting diagnostic number here, they get sensitive about GDPR.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

My suspicion is the Sub delay you’re experiencing is due to network issues, but I have no real explanation for the garbledness (if that’s a word). Which is one reason I’m suggesting a diagnostic, and a call. There really could be data that we in the public (you, included) can’t see, and might possibly explain the issue’s you’re experiencing.