too_much_too_soon

I've got an old Yamaha YST-SW320 which has a 10" downward firing speaker, active servo tech, and puts out 250W and weights in at 18kg. It's putting out the bass just as well as it did in 2001 when it was new. Its a pretty good sub for a living room setup and rattles the walls and doors in that low 30Hz or less range. It hides beside a sofa the sits on the right hand wall in a relatively small room.

I would be especially interested in knowing how people that have added a sub in a living room home theatre setup feel after running another sub for a time. Was it worthwhile?

I'm wondering how something like the SVS PB-2000 sub would pair with this? Do I really need to worry about matching subs? Is it a thing? I assume I'll place them diagonally opposite one another, angled to avoid standing waves.

BTW, not my gear in the pic, its just a pic of the subwoofer. I've got 5.1.2 and elac speakers, with Energy rears.

EDIT: Thanks. I'll see if anyone's got an option to try before I buy. If not I'll probably stick with the single sub for the foreseeable future.

I use a lot of media sourced on the internet, mostly .mp4 or .mkv files. For example, one source that gives me problems is Youtube "surround sound" test videos. I often feel the surround sound is not as "advertised" in the media title. The surround sound does seem to output to the different channels but it feels more like a virtual or All Channels fake-surround to me.

My downloaded files from demolandia.net sound far better and convince me my setup is good. My kids think the Atmos file 'Audiosphere' is great. The audio clearly bounces around my 'audio sphere' and I've had more entertainment from that video file than many others I have. Is this a case of the media not being what is advertised, or a codec issue that my Receiver can't handle? Or something else? Any thoughts?

An invaluable guide from Dolby to setting up Dolby Atmos in your home. Even if you don't have Atmos there is good information for setting up other configurations.

I'm currently trialing a couple of hi resolution music streaming services - Quobuz and Tidal and I'm interested in Atmos music releases which are becoming more and more common. Tidal definitely has the edge of Quobuz for atmos releases but its also pretty expensive at NZD$30 a month, slightly more than Quobuz and about the same as Spotify premium (which doesnt have atmos afaik). Any one using any other services? Do you feel you're getting value for money?

The title says it all really. I going to upgrade to a RX-A4A. I use my home theatre everyday as the main TV in the living area. The living area is a rectangular 4m x 5m room, carpeted, and fully open to the rest of the open plan living area on the lefthand side. I've been using Energy floor standing speakers as my mains but I intend to move them to the back to replace a couple of Energy bookshelf speakers. I have a Yamaha downward firing sub front right that I run fairly hot.

Any thoughts on the match? Any thoughts about the speakers? They'd be close to the top end of my budget.