Whoa!

I mentioned that the sound system in the home theater is all Sonos. Easy to install, mostly wireless and more than loud enough for the medium sized room which is 20’9″ long, 13’11” wide and 9’2″ high, with a flat ceiling. The latter is the preferred configuration for Dolby Atmos, which the Sonos Arc sound bar supports, as selected upward firing speakers bounce the height information off that ceiling to the listener.

The speakers – the sound bar, the two rear surrounds and the sub – have internal amplifiers and wireless data connectivity for all but the sound bar, so that all that is needed is a power source for each. The sound bar is hard wired to the UST projector with an HDMI cable. That makes for an easy installation.

Even with the one Sub the sound is smooth with no obnoxious peaks or valleys. I generally find that +6 to +8 on the rear surrounds makes for the best sound stage and the bass is not lacking. Response curves show it is smooth down to 25Hz. Late last year Sonos enhanced their iPhone app to permit use of two Subs and reviews suggest that two are better than one. However, at a costly $750 for a Sub, there may be some confirmation bias at work here. Keeping the Subs away from the walls avoids the usual resonance hump in bass response, which avoidance is desirable for smooth reproduction.

So I sprang for a second Sub:

Two are better than one. The Sonos system
makes for an elegant, uncluttered installation.
The rear surround speakers are not shown.

Packaging and installation are very much ‘Apple quality’. The iPhone app walks you though the process of adding the second Sub and once done you run the Trueplay function which has the speakers emitting sounds for 60 seconds while you walk around with the iPhone, waving it this way and that. This captures the sound stage and tunes the system for best results. (If your cell phone is an Android one you will have to borrow an iPhone or iPad as the function works on iOS only).

And yes, the bass is now smoother and cleaner and the mid range is further cleaned up. The image above is from the opening minutes of Damian Chazelle’s ‘First Man‘, the Neil Armstrong story, where he is piloting the experimental Bell aircraft into space and, yes, the effect is earth shattering.

Recommended, if not cheap.