Upgrading Arc to Ultra in setup with Sub 3 and Eras 300 results in weaker sub bass

Question

Upgraded my Arc to an Ultra. It’s part of a setup with Eras 300 surrounds and a sub 3. I also have a Sub 4 still boxed new and currently unused.

My first setup I had the ultra wired and everything else WifI and for no sub response. Resetting everything and trying with an ultra on WiFi as well for the sub working but it seems noticeably weaker.

the inception soundtrack no longer shakes the room and it seems like the ultra is carrying 90% of the bass and the sub is running like 10%. Anyway to fix this, the sub3 seems to be barely working?

Pools-3015 · Accepted Answer

There are users complaining about this and what some have found, is doing Basic Trueplay instead of Advanced Trueplay helped.

There was an update in December to address no sound from the Sub at all, but this is slightly different. I am not sure when there will be another firmware update, but hopefully its soon, and Sonos will address this.

In the meantime, you could setup a dual sub HT system since you have a Gen 4. Why not give that a try to see if that would improve your experience.

Jothanoth · Answer

There are users complaining about this and what some have found, is doing Basic Trueplay instead of Advanced Trueplay helped.

There was an update in December to address no sound from the Sub at all, but this is slightly different. I am not sure when there will be another firmware update, but hopefully its soon, and Sonos will address this.

In the meantime, you could setup a dual sub HT system since you have a Gen 4. Why not give that a try to see if that would improve your experience.

I actually haven’t used Trueplay at all. I assumed it shouldn’t make a difference of this scale but maybe I should give it a try.

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