SourcePoint 888 owners – low-end bass in open rooms?

If you think about it mcashiola, whether it be acoustic feet for your speakers, room treatments, understanding the scope of your sonics that make up your listening habits, cables, cleaning up the electrical signal that feeds your gear...all of that.. the minuteau!..is where you should explore before going the route of installing subs, which if deployed in a room without those things, will cause more problems than it would provide solutions.

If you had a pair of bookshelf speakers that are designed to pair with a sub for low-end, than that would alter the remedy, but your current speakers should  - in the end - provide adequate and pleasing bass for your music. 

Area rugs will work just as good as carpeting the entire floor. I would try the Acoustic feet for your speakers first. At the least, that would clean up the bass and help make it more pronounced in your room. This would help you understand where the bass emanates into your room via a bass crawl.

@mcashiola, Mingus played an acoustic 4-string bass.  The open E string on that is around 42 Hz.  As a jazz fan I've long used that frequency as a minimal requirement for any speakers I've considered.  With that it has worked well for me with all the various music I listen to.

The problem with square or nearly square rooms is each dimension affects standing waves at a given frequency..  When those dimensions are repeated (wall to wall, wall to floor/ceiling) that doubles the impact on that frequency..  That can produce greater emphasis or suck outs.  In my experience the smoothest in-room response is best.

Rooms can be affected in three ways - reflection, dispersion, and absorption.  It will require experimentation so you'll need to try combinations of those in your new room.  Maybe added absorption on one or opposite walls to reduce the doubling.  But a problem comes from thicker material being necessary for lower frequency.  Also suspending the absorption panel out from the wall can increase effectiveness.  Good information can be found online at a few particular sites.

"For example, last night I played Blues and roots by Charles Mingus. I really thought it sounded fantastic. I had no complaints about low end while listening to that album. But, I’ve recently had a couple of folks comment to me on certain albums (albums they claim to know well) that my system wasn’t presenting the low end well and was too irritating in the mids and highs."

The OP once again, is presenting my observation.

It's not stated what actual recordings-pressings are used. New reissues/reissues done in the 80's or whatever.

Mingus album is a 1960 recording done arguably in the height of analog recording.

Charlie Mingus – Blues & Roots – Vinyl (LP, Album, Mono), 1960 [r3496796] | Discogs

Current reissue of that period Jazz is either "audiophile" or generic CD copy.

Doesn't make sense the OP is "sometimes" hearing a great recording, while most of the time not because the reason is some need for tweaky footers/advanced computer analysis of room nodes etc etc.

Not saying all those suggestions are invalid, or without merit.

The reason for subs is to enhance what's already there and add atmospheric/ambient low end. 

@mcashiola 

How many hours on them?  A couple hundred is  not unusual for the bass to be near fully developed.  

I have used this REL break in process for speakers and subwoofers and it really does accelerate the break in process.  It is not harmful to the speakers in any way. 

https://rel.net/blogs/learn-and-explore/how-to-break-in-a-subwoofer?srsltid=AfmBOoqb96QPdzlyRYfvIH58Ox0LZHKR943PwVk2DwZSp4qqtBNzQmX2

@avanti1960 thank you. I’ll check it out. I likely have under 100 hours.

@tablejockey Charles Mingus Blues & Roots (Atlantic 75 Series) 180g 45rpm 2LP,
Mastered by Kevin Gray at Cohearent Audio from the Original Analog Tape
Plated & Pressed at QRP and RTI