Since I don't know what electronics your using or room dimensions I can only suggest 6 of the best all round speakers at approximately $5k or less(of course this is my opinion). All theses speakers are capable of bass 40hz or lower.
ATC-SCM 40
Elac-FS247BE
Focus Audio-FP 70SE
Gershman Acoustics-Sonogram
Magnepan 1.7
Stirling Broadcast LS3/6
ATC-SCM 40
Elac-FS247BE
Focus Audio-FP 70SE
Gershman Acoustics-Sonogram
Magnepan 1.7
Stirling Broadcast LS3/6