Thought I'd make a short post about my 2 J110's! It sure beats anything I've had to date in sound quality. All those 15's and 12's I had in various configs never quite had the balance of frequencies and tone I wanted. CLEAR sound is mainly what I was after, and after a long time I began hypothesizing that that speaker systems are the most neglected part of overall sound, at least for the bass guitar. I just felt a good set of speakers would get me further to tone happiness than an amp. Long story short, I decided that I wanted a DIY horn load speaker system.
So here I am.

The remnants of a Carvin PB150 (150W @ 4 ohms, 100W @ 8ohms) are used in the setup, i.e., the PS10 speaker is on the top box, and a new 2510 in the bottom. After much debate, tweeter were not used but can easily be added later, hence, the gap in the grill mount on one box. Obviously, I know what the recommended driver is

The sound from these Jacks are clear and balanced in bass guitar use. My EQ approach has changed dramatically, even from 1 J110 to 2. 1 J110 needs some low end boost and sounds great, but a bit lacking mid clarity (that's with the 2510). I figured that's because the mids are now buried a bit from the low end boost. With 2 jacks, ah, it truly sounds magnificent. I now roll the bass off and now the sound gorgeous, clear, and responsive. Even if I did not roll the bass off, it still sounds superb but I do not want to have a ton of rumble in my sound since it detracts from the clarity, and in my case robs me of needed power. By rumble, I mean <50Hz, probably lower, that creates a "cloud" of bass that never seems to change in pitch. Bill has said several times that the power band of bass is like (guessing) 60-120Hz, so trying to get sub bass out of a bass setup is not only demanding on a setup but will tend to cause everyone else to turn up. Anyway....

Thank you to everyone sharing your experiences, expertise, pictures, and being generous with your work, Bill. I have no intention on ever buying a commerical cab again!