Hey if you have ls 50 metas and a sub, you are good to go for most normal and safe SPLs at least up to 90db or so.
I use the 500w/ch BEl Canto monoblocks with mine, but I do not feel need to go super loud, seldom above 90db, and the Bel Cantos never come anywhere close to breaking a sweat, which is a good thing. ls50s are great but still small and only will go so far loud and clear. But, I do not use an active crossover. ls50s are working full range even with the sub. Add that and let the sub do more work and that (offloading some bass off the ls50s) should take things a good bit even further off any decent number of watts.
With ls50s, you do always need an amp with a lot of juice/current delivery no matter what wattage to drive them to their max in regard to tonal balance, accuracy, detail and all the other usual good things that go along with those.
I use the 500w/ch BEl Canto monoblocks with mine, but I do not feel need to go super loud, seldom above 90db, and the Bel Cantos never come anywhere close to breaking a sweat, which is a good thing. ls50s are great but still small and only will go so far loud and clear. But, I do not use an active crossover. ls50s are working full range even with the sub. Add that and let the sub do more work and that (offloading some bass off the ls50s) should take things a good bit even further off any decent number of watts.
With ls50s, you do always need an amp with a lot of juice/current delivery no matter what wattage to drive them to their max in regard to tonal balance, accuracy, detail and all the other usual good things that go along with those.