Upgrade from ADS L1230


Hello, I am the lucky owner of a pair of ADS L1230.

I like the amplitude of the sound-stage and the tone is very balance with a sweet, soft and well defined mid-high.
What I am missing is definition on the low-end. I feel like the bass is not as punchy as I would like and in general I perceive some sort of sluggishness at the lowest frequencies. 

I would like to upgrade to a pair of speakers that would give me the same sound-stage and pleasant mid-high and at the same time better performance on the low-end. I was thinking about going for a used couple of speakers, having a 1500$ budget.

I am planning to driving the speakers with my actual amplifier which is a Threshold Stasis 3 with factory upgraded balanced inputs - recently fully serviced and restored (only psu caps have been updated, all the other components were within specs.)
My room is 12x18 (ceiling is 10' tall), with hardwood floor mostly covered by rugs.

Any suggestion?


marcomarmo
If you like the ADS sound and I did back in the day but want newer in same vein look to Aerial Acoustics. I still have two pairs of ADS monitors here in storage and my son has my L810 II's I bought new. 
@jackd I hear very good reviews about the Aerial Acoustics but they are a bit over my budget. Maybe I can try to take the most out of my ADS now and save money for a pair of AA later
Three cones two in front , one in back
put some washers under so you can adjust tilt just a bit.
soundanchor might build a custom riser stand like the Vandersteen 1-3, give them a call but they will run some $$$
the three cones can be tippy...so you may want 2 shorter outrigger ant-tipping cones in back corners - these do not touch floor normally

the machined vanderseen aluminum cones cones are reasonably priced, call Jaclyn and see how long the threaded rod is
you will need receiver T-nuts inside the cabinet
my guess is $100 for 6 machined cones, etc to your door...