What is the most dramatic way of increasing a speaker's Bass and Low mid?


Hi-

I am wondering what would give the most dramatic increase in bass and low mid projection/Volume, even on account of accuracy ...


My speakers can go down to 28hz but i need to boost it’s level, not frequency extension. They are 2 way with bass reflex port. 6.5" woofer size and a tweeter. Floor standing.

My floor is old hardwood strips.

placement and coupling methods are the first things that come to mind. I do not want to add an equalizer at this point.

Spikes, footers, concrete platform, direct floor flush contact? anything and everything that YOU know works.
Speculations on untested methods are not needed as i need real life experience from people.

Thanks!
Rea

128x128dumbeat
@Fraterperdurabo   you right for 100%  The majority interesting ideas
is placebo effect. Get measuring tools  is very helpful. 

I'm an electronics technician who is very accustomed to working with all kinds of measuring tools, but the only thing that can measure "high end" audio is a pair of keen ears.

The people who don't have them wouldn't understand that fact.
I am  electronics engineer with big experience   to speakers building
and have currently selling speakers.   i say--  you have to use  the both--
you ears  because the ears is very precise and measuring tools.
measuring microphone also very important, see all stereophile  
revue , they make measuring test for all famous brand,  i dont think
you can recommend John dont do it   

I'm going to have room treatments done, that will most certainly require professional measuring equipment, and someone who knows how to use it.
Moving your speakers closer to the corners will load the low frequencies and increase their volume.  Too much and it will muddy vocals and destroy the stereo image.  For a 36" tall speaker in a 12' X18' room with 8' ceilings, start with theses numbers to increase the bass: 14" from wall to speaker face, 22" from Woofer center to side wall. The next position, pull the speaker out to 22" and or pull it in to 27" from the side wall, or both. Each will reduce the bass a bit.  These numbers aren't 'woo', they are basic room acoustics - physics. Pushing the speakers to the walls and corners increases the room 'loading' of the woofer, the ratios minimize standing wave (eigentone) reinforcement. You can also download a spectrum analyzer from Google Play like 'Spectroid' and run pink noise through your system to get a rough idea of the frequency response for a given mike location.  But, by all means, listen.  The tools and equations are there to inform your decision, not make it.