Can you tell me why I didn't like the Reference 3a MM's?


So I recently asked about a new amp on the Amplifier forum.  I got a lot of good advice and ended up with a Pass XA25.  I really like this amp and the sound.  I have been told by Reno Hi Fi, Pass Labs and B&W, all of whom I contacted, that the XA25 is under-powered for my B&W 705S2 speakers.  But it sounds very good.  However a little flat when the volume is low.

So I am looking for some more efficient speakers.  I tried a used set of Reference 3a deCapo MM's, but they did not have the clarity of the B&W's and sounded a bit muddy at times.

I am looking at Omega Super Alnico HO's.  But I am wondering if the full range driver sound is what I didn't like.  

Am I wrong in thinking more efficient speakers will sound somewhat better at a lower volume?  Can you possibly tell my why I didn't like the MM's?  Something about their design or build?

Any thoughts on the Super Alnico HO's?  I don't want to move down the speaker sound chain.

Thanks much!  Any other speaker suggestions welcome!  But not horns.  I am not a Klipsch fan.
128x128jgoldrick
+1 @mapman

Certainly for the price and parts, they are amazing values. I was at a show and got to talking to some lady musicians / audiophiles who recorded DSD for Blue Coast. Fritz was one of their favorite rooms.

Best,

E
The reason the op doesnt like what hes hearing is the lack of custom tuning. Get your crossovers custom tuned and be happy. 
Why buy another speaker when all it needs is retuning? 
I own the omega Hemps good  on some material but get taxed out and a bit peaky in the upper mids. When pushed some.
i had them with both a 70wpc tube amp
ss well as a bat 250 with bat pack 
get a good sub like a svs3000 totakeload off the amp ,and speakers will be much more at ease, the Sb 3000 model,a fantastic sub at under a grand a steal sub of the year ,it worked for my monitors  when I had the 25 watt model 6    class A pass labs.
The high, tight corner placement is likely problematic with the Ref 3A's.  I sold mine because my wife finally insisted that I put them back very close to the wall in our living room, and that was not enough for the rear porting to work.  The upper bass and lower mid's were kind of congested in this setting.  I would look for forward ported speakers or sealed enclosures, if that placement is truly fixed.

Regarding the favorable comments on Fritz speakers, I have only heard them at the shows, but they have consistently sounded quite good to me, too.  They might be worth investigating.
Jgoldrick, while it may not be practice given your listening environment, the single best thing you can do for your system is move your speakers. Some how, some way. If even temporarily to ascertain if your “issue” is actually the speaker. I’m going to go out on a limb (not a very long one) and suggest that is most of your issue listening-wise. Give it a shot if at all possible. I would argue, in that placement, very few, if any, speakers will sound truly great.