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Avid Contributor II
November 29, 2025
Answered

Sub 3 or Sub 4 for Arc

I have an Arc with two SL1s I see that Sonos have specials for the large woofer. My question is which is the most compatible for Arc. I understand that Sub 4 is best for Arc Ultra but mine is the first gen Arc. Also Costco have Sub 3  special price of $779 and Sonos have Sub 4 for $719. I assume the more I add on the greater the home theatre experience is. 

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Stanley_4
Stanley_4Answer
Grand Maestro
November 29, 2025

Either Sub is fully compatible so no worries there.

The 4 has newer electronics and weighs less, neither (so far) appears to make any difference.

Buying the 3 has been recommended due to the usually lower price.

I picked up a 4 recently, for no real good reason than maybe someday the new electronics will matter.

 

2 replies

Stanley_4
Stanley_4Answer
Grand Maestro
November 29, 2025

Either Sub is fully compatible so no worries there.

The 4 has newer electronics and weighs less, neither (so far) appears to make any difference.

Buying the 3 has been recommended due to the usually lower price.

I picked up a 4 recently, for no real good reason than maybe someday the new electronics will matter.

 

ECN315Author
Avid Contributor II
November 29, 2025

Makes sense to me guess I’ll go the cheaper being in this case the 4 I was more concerned about compatibility unlike Apple, Sonos appears to allow the mix of old with new.