I am looking to get more bass out of my system

The first thing i would try is to run your CD player WITHOUT splitting the signal into two amps. You may surprised that your bass will improve due to the fact you CD's output stage may not have enough horsepower to PROPERLY drive the 2 sets of outputs. The second thing I would try would depend on what tube compiment you are using in your CD player. Let us know the tubes before taking any other measures. What interconnects are you using between the CD and the amp. It could be that you get what you are after without spending a bunch of money.

Good luck.

A musical, fast, self-powered sub-woofer, (say a Rythmik Audio D15SE). Being self-powered, it will have line inputs from your preamp, crossover adjustments and level controls so you can get the bass you want on demand.

I would try and "stack" the 2 pair if Chorus speakers, inverting the top pair,as well as place the sub somewhere in between the stack, trying to keep all the drivers at equal distances from the listening area. IME, this will achieve the "tightest" bass, given your equipment. The bass characteristics of the 2 pair of Chorus differs a bit, as does the 2 amps. I always look for tighter bass, not more bass. One pair of Chorus's should provide enough bass, unless the room is quite large. Just experiment. But, too much bass will "excite" the room, which is no good.

The power cord and cone root sounds like the best advice so far . And you won't be messing with other things . You have likely found the best spot for your speakers , moving them back may give you more bass but usually causes more problems than it solves .

Mainsound,

REALLY, REALLY examine your tube compliment in your Jolida amp and your Cary amp AFTER you have determined that you are tubed correctly in your CD player. And do that ONLY after you have remedied using a splitter in line to connect your CD player to BOTH amps, which would never be advisable for optimal performance. I'm not saying that stacking your speakers wouldn't be an interesting experiment, or buying another subwoofer nor am I saying that buying a couple of garden hose power cables wouldn't improve your setup (I have a few of those myself).

No one has asked the important questions, of which I am quite surprised. What tubes are you currently running in your amps? Is your Cary direct coupled? Is the bass performance equally weak on both amps?

Please, save yourself some time and money, the main problem is likely your source but until you get that right, you'll be wasting your time dinking around downstream.