weakest link? what would you upgrade?

I'm not a fan of B&W speakers, but if you like them and plan to keep them, I would start off with a good stereo amp for for your front left and right speakers. There's only so much power that you can get out of your receiver. A good amp will really take control of the speakers. Should make a very big difference.

Sorry. I did overlook your amp. I don't have any direct experiance with Anthem but I highly doubt that it is the weak link in your system. A couple of others mention that you should upgrade upgrade your source. I agree 100%. In your system, it would make the most sense. After that, I would look at a new preamp processor. I know some people may not agree with me on this, but the preamp/processor is a huge factor when it comes to good sound; both in the digital and analog domain. Once again, sorry for my error. I should have been more careful.

If you are interested in DIY acoustic treatment, I can give you some good info. Most acoustic panels are made from fibreglass. Very simply, all you need to do is buy fibreglass panels (Not the big roll up kind, but the pre-made rectangle panels.), and cover them with fabric that goes with your room. I have friends who swear that these panels are just as good as anything you can buy. I can't say for myself because I never did a comparison.

Instead of giving more details on how to make them, check this website out: http://audioperfectionist.com/. Thats the publication that I got it from. Audio Perfectionist Journal is not produced any more but their website is still up and they let you download a bunch of old issues for free. Not to get off topic, but I would encourage everyone to have a look at this web site, especially if you are new to audio. Its by far the best resource for audio equipment and setup I have ever seen.

If, for some reason, anyone has trouble downloading the Journal, just post. I'm pretty sure I still have a backup somewhere.