Help wanted: Bass!


I’m in need of augmenting the bass in my system. I’m the old school type and would rather NOT go the sub route.

My system and environment:
• Pre:   Conrad Johnson Premier 16LS
• Pwr:   Conrad Johnson Premier 12 Mono Blocks
• Pwr Condtnr: Shunyata Hydra
• Speakers: Tannoy Kensingtons
• Cabeling: Stealth PGS IC’s, Vandenhull Bi-wire Speaker wiring
• Sources: Conrad Johnson DV-2B CD Player, SOTA Star w/SME arm w/Grado cart, Magnum Dynalab Tube Tun 
• Music:   Classic Rock, Easy listening, Female Jazz singers, Classical
• Room:   Big (25 X 30) w/cathedral ceiling. Harwood floors/ceiling and big glass windows. Rugs and furniture

Came across the Emerald Physics Bass Manager claims to add 1/2 octave of bass to any speaker. IYO, could that be a solution? Are there similar helpers like this out there? Not much in the budget (about $500) for a near-term purchase. Could double that for a longer-term.

Again, not wanting to go the sub route unless I have too. Can’t do room treatments or alter room configuration (it’s our living room) either.

Any thoughts/suggestions will be greatly appreciated – thank you!

rbschauman
rbschauman ... 

Here are some room treatments for folks who don't want intrusive room treatments. They solidify the bass, extend the highs and give you a more focused sound stage. Amazing product.  

http://highend-electronics.com/products/sr-hft-high-frequency-transformer

Get the 10 pack and place them according to the directions in the package. The 10 pack will get you right on your budget. The difference they make is NOT subtle. 

Nothing to lose with a 30 day, full refund, return policy.

OP
There was a big thread on subs. As I remember, almost everyone recommended two subs and one pro fellow recommended four.
Fast subs that can integrate well will not and should not be inexpensive. 
inna,

Yes, but subs can be a nightmare if you have no control over their placement, room acoustics or EQ. In this case it's the perfect storm for @rbshauman

I'd get zero.

Given the ability to control at least 2 of the three pre-requisites, I'd start with 1 and see what's missing. The value of a second sub may be smaller than it's worth.