2.1 to 5.2 (Vandersteen 2C)

Vandersteen makes a center channel (actually 3). I also have 2CE Sigs. I thought about the Vandersteen as my center, but it is a bit of an awkward size for my set-up, so finally went with an Elac Debut 2 center, (after a few others), bought it used, and quite happy with it for dialog. I have 1C’s as my rears. Some use the Vandersteen VSM-1 for that application, but you have options. I just had the 1C’s after my 2CE purchase, and used them. Keep in mind, IMO, you do not need ‘great’ speakers for the rears.

That said, I keep my 2channel and HT set-up amplification totally separate from one another as my 2 channel preamp has HT pass though. Thus, my AV receiver/processor is only used in ‘tv mode’, nothing else. If you go that route, I would advise the same.

I am not overly critical about my HT quality compared to my 2 channel listening. But believe me, it is more than adequate.

If you like Vandersteen there's zero reason to switch. While a center channel will enhance the experience be aware a lot of alleged 5.1 content is actually missing center, so if your L and R aren't sounding great for dialogue a center won't necessarily enhance it.

What you need to consider is a good processor instead OR adding some EQ between your LG and your 2 channel rig.

My point is the center alone won't help the dialogue but a processor will, and a processor with a good center will be great.  Stick with Vandersteen.

PS - I'm talking specifically about Netflix streaming missing center channel.

If your LG is like mine there is no analog output.  I suggest you use something like this which is a DAC + EQ for it's output:

https://www.minidsp.com/products/dirac-series/ddrc-24

You can use the auto-EQ features and tweak them for better dialogue. :)