what replaced your Aerial 7B speakers?

adg101, were the Sound Anchor bases you have sold by AA or are they aftermarket?

The ones that came with mine were sold by AA with the speakers. They weigh 30 pounds each. The spikes were missing on mine so I made my own.

I know which ones you speak of. I had them with my aerial 8s. these are not like those.

The bases AA sold as an option were made by Sound Anchor. When I called AA they no longer stocked them and they got me in contact with Sound Anchor which they made a set for me at the original price. Same ones as on this link.

https://www.audiogon.com/listings/full-range-w-sound-anchor-stands-2017-10-05-speakers

If you’re not using spikes it does make a difference for the better.

Yeah, if you're happy with everything and just want an improvement in bass, if I were you I'd get a good sub and some kind of integration device.  Something like an SVS SB2000 sub and DSpeaker anti-mode 2.0 will get you full-range, quality bass nicely integrated with your room and speakers for not too much $$$. 

To get better bass without sacrificing other areas you may need to spend a little more.  The first thing that popped into mind was Joseph Audio Perspectives...
https://www.audiogon.com/listings/lis9c5ga-joseph-audio-perspective-monitors?refsource=hifishark

Or maybe Vandy Quattros, but they'll be above your price range too.  Best of luck. 

Or better yet, the sub to match with a pair of 7B’s... the AA SW12 maybe.