Looking for $20k system for Mahler No 6


Hi guys

I'm looking for $20k system that will do justice for Mahler Symphony No 6, Tchaikovsky 1812 overture, and Rimsky's Easter Overture.
I have already good systems for chamber music, solos, vocals, etc.

Any opinions will be appreciated.
The listening room is about 400 sq ft.

DH
dh4kim
Pubul57

I wouldn't mind either new or used, and I am not a big believer of cable/tweak, so $20K will mostly be distributed to source/amp/speakers. Probably I will invest 1:2:3, so $10K on speaker, $7K amps and $3k source. Thus I posted this question in speakers forum. I personally believe that speakers will matter most especially on large scale music like Mahler 6.

But anyway, as I said, any opinions are welcome and appreciated.

DH
I assume you are looking for dynamic speakers that will not sound congested but will remain effortless on Mahlers 6th, in which case I would suggest a bigger Active ATC. If you have systems already for chamber music and vocals then simply use the source and preamp from this setup and use the active speakers with built in amp packs. I have seen some used ATC SCM 150's for sale for less than 20K on audiogon. Just be aware that these may overpower a 20 by 20 foot room....but at least you won't be limited in SPL or dynamics...I can assure you that you will still have plenty of headroom even at deafening levels. (ATC's main feature is effortless "Hi-fi" sound at very loud and dynamic levels with extremely low distortion...think audiophile quality sound at SPL's where other good sounding speakers would have long been blown up)
I think the frequency response of the speakers will have to be fairly good at 40Hz, maybe below for the "hammer" and bells. I think I would start there; reviewing the various graphs in Stereophile, UHF etc.