More Bass

@steve59 - This is probably one of the best suggestions. I was thinking active before buying all the separates (Dutch & Dutch 8c in particular), but my wife was actually the proponent of separates, but wasn't thinking ahead enough regarding room problems. Plus the 8c’s on stands aren’t all that attractive.

Trading up to the active Signatures is definitely an option (I think, I'd have to talk to the dealer first) and the upcharge to actives isn’t much more than adding a couple of subs.

My only concern would be will the actives produce as good a sound as the pricey pre/power amp that I have right now (taking the room out of the equation)? As I might not live here forever and have a better situation in the future.

Instead of trying different recordings which vary from recording to recording, why don’t you get a Testone CD or if you subscribe to TIDAL, you can use this Testone album called “audio line up test tones”. You can listen to a frequency at every hundred hertz for approximately three minutes long. While the frequency is running, it gives you time to move your speakers around. I like running 30 Hz and then running 20 Hz. It’s amazing how many speakers say they’ll go to 20 Hz but you here next to nothing versus playing 30 Hz and then 40 Hz and then 50 Hz. The towns keep getting louder as it’s easier for this speaker to reproduce the sound.Try it works great!

Also, if you don’t trust your ears, you can run say 30 Hz test tone and use your phone or iPad with a spectrum analyzer app and have it remember the strongest signal. The iPhone app is accurate enough to tell you if you’re getting a stronger signal by moving the speakers around More so then your ears probably are. If you can play the test tones and you have a smart phone ….you have  all the tools you need to figure it out before you go spending any money

@raysmtb1 - Thanks, There seem to be many of these apps, can you suggest which one might be best or is there a "Spectrum Analyzer for Dummies" I can find these kinda things challenging! 

@navyachts I just found a new one that’s really easy to use and let you record your results so that you can record before and after you make a change. It’s called.”youlean LM lite”. It uses a measurement called a LUF. This is supposed to be the newest way to measure sound. You can read up on what an LUF is here.this is all new to me, I’ve just found this this afternoon. It’s very interesting if you’re trying to figure out what makes a change in the sound. I think it’s pretty easy to understand and I’m not very smart guy.