LS3/5A vs Tannoy

Super old thread but maybe get someone to chime in... very "speaker poor" these days but do have a mid 80's set of 11ohm, Roger's LS3/5As that play exceptionally with my Tandberg 3012 and a set of Reference 3a De Capos with a vintage Crown Power Line stack for more aggressive music/listening. Really love everything about the LS3/5As but never feel I'm getting all they can deliver. I mainly stream Tidal lossless these days via a 1st generation AE, a Meridian Explorer II DAC and my iPad mini. Run good old Artech Prisma, Swiss speaker cable & they sit on 30" Target open stands with felt pads between the speaker box and stand platform and on carpet spikes. Any thoughts on what I can do to improve performance? The room is a fairly well dampened 26'x18' (9' rounded ceiling space and sit at the far end of the longer wall run about 5' off the back wall and 7' apart in the centerstage of the 18' wall. Thinking of vintage British integrated options from the same era and want to know what electronics people have gotten the best results from. Have a chance to pick up a Meridian 551 that I think might be a good fit. Have read that Quad separates make a nice pairing... who has 1st hand experience with these and what has mated best with the LS3/5As?
TY - BGR

Having had two pairs of LS3/5a speakers I can tell you they do not do rock well, they are great for voices and small ensembles, but are not dynamic and cannot handle much power. Other than that they’re great.

You have to remember the original design purpose of the LS3/5A. The BBC wanted a small speaker for use in mobile vans for monitoring and mixing when recording or broadcasting from off-site locations. They were particularly interested in how well the speaker worked with the human voice. They do that job extremely well, but it necessarily means they lose steam quickly as the room they are used in gets larger and higher volume is wanted - particularly with lots of bass. Comparing them to Tannoys, even the smaller ones, is a bit of an apples and oranges thing.