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could you hack a symfonisk bookshelf and make it permanently mute?

  • January 20, 2024
  • 6 replies
  • 141 views
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So I had a crazy idea.


my living room has an AVR and 5.1 with ceiling speakers but no sub. The ceiling speakers are very noisy upstairs so it’s rarely used.

I also have a sonos beam and symfonisk bookshelves as rears.

Both systems receive the same hdmi feed.

i am going to add a Sonos sub and I’ve been trying to think of a way to get the sub to also work with the existing 5.1 system for the odd occasion it’s used, and I’ve had an idea.

 

what if I

 

  1. bought a cheap symfonisk bookshelf.
  1. Could I open it up and find some way of snipping wires so that it worked perfectly to group with but no sound ever came out of it?
  1. I could then make it into a room with the sub,
  2. share the audio from the sonos beam with that room (which is the same sound as goes to the ceiling speakers)
  3.  Turn the sonos beam volume down to zero

 

And then I should - should have ceiling speakers in sync with the sonos sub?

 

Sound possible?

 

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6 replies

Belly M
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  • Belly M
  • January 20, 2024

If you group the Symfonisk to the Beam the audio will have a slight delay and probably unacceptable as the bass will be out of sync and not part of the Sonos HT bond.

 

Airgetlam
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  • tomp1
  • Author
  • Contributor III
  • January 20, 2024

But what would be the cause of the delay?

 currently if I put a movie on, turn on the beam AND the AVR, AND group the beam with a symfonisk picture I already have, it all seems to sync up just fine.

Belly M
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  • Belly M
  • January 20, 2024

Are the Symfonisks part of the Sonos HT group?

jgatie
  • jgatie
  • January 20, 2024

But what would be the cause of the delay?

 currently if I put a movie on, turn on the beam AND the AVR, AND group the beam with a symfonisk picture I already have, it all seems to sync up just fine.

 

The cause of the delay is due to the 75ms buffer added to grouped devices to allow for transmission to multiple rooms.  A Home Theater room uses a low latency 5GHz connection in order to sync the Sub and surrounds with video, but it is only reliable when all devices are in the same room.  Grouped devices, on the other hand, have a larger buffer and use a stronger 2.4 GHz signal in order to go through walls and floors. 

 

Belly M
Airgetlam
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  • tomp1
  • Author
  • Contributor III
  • January 20, 2024

But, I am sitting in my living room right now. I’ve got the TV on with the sound going to the sonos beam and the surrounds.

 

i’ve now gone into the Sonos app and grouped the tv audio with a symfonisk picture that is in a different room normally but which I’ve plugged in in here just to test this out and it’s all synced up absolutely fine. No delay.

jgatie
  • jgatie
  • January 20, 2024

But, I am sitting in my living room right now. I’ve got the TV on with the sound going to the sonos beam and the surrounds.

 

i’ve now gone into the Sonos app and grouped the tv audio with a symfonisk picture that is in a different room normally but which I’ve plugged in in here just to test this out and it’s all synced up absolutely fine. No delay.

 

You may not be sensitive to the echo, because unless you’ve adjusted the Group Audio delay on the Beam to be delayed behind the video, all speakers grouped with a TV source are delayed.  It’s there, trust me. 

Airgetlam
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