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.
