What is the Altec 604 sound?

Hi
I have read some reviews of loudspeakers based on Altec 604 two-way coaxials (which are now manufactured by Great Plans Acoustics) and that are even suggested for low-power tube or FirstWatt amplification. In all cases the cabinet is quite big, but still acceptable.
So I was wondering how they sounded since the speaker was designed for theaters, whereas here they would be used for home speakers.
How are they with classical and acoustic music, and especially with low volume night listening where the great sensitivity should make them magical. 

Thanks
Alberto