Budget Strategies forTightening up Bass?

Just a guess, but I have never had much luck putting speakers near any walls, not to mention corners.

If you want to use the room as a tone control of sorts, often better to bring the speakers out from the walls, and push the back of your listening chair against the wall.

Still guessing, but I would think this would also dramatically improve the imaging of your Silverline speakers.

Not sure how this might complicate your decorating, but you asked about tightening up the bass, not your marriage.

Good luck.

Cwlondon-- was that "good luck" with my speakers or "good luck" with my marriage??? ;o)
Musiclug-- I will try brass!
RE: speaker cable and power cords, my speaker cable is 20', so upgrading it significantly will, I'm guessing, cost a good deal more than $ 350, but used, maybe not. Any suggestions?????
I've got Transparent Power Link Plus power cords, now.
I'll try borrowing something else from my dealer, see what happens.

its time for diy acoustical treatment..Thick as you can get and not over done.

Rear port, right? Firing into corners...I'd try different schemes of port damping using various plug materials.

My opinion.

As for your speaker cables, I've tried many and settled on Speltz anticables, even over cables that list for over $1200.00. There is a clarity, and open clean window on the sound that is beautiful and incisive on VMPS speakers. Can't comment on other speakers bu the Absolute Sound sure loves them too. You can buy them in bulk, easily attach spades and do it for under 100.00. i have a 10 ft. run and and 18 ft. run because my equipment is now on the side vs. between the speakers. I used to have an 8 ft. pair. You can't tell the difference in the longer cables or in a mismatched length. How many cables can do that number and still be clear as a bell?