Can't compare my Shearwaters HRs with these ProAcs, sorry, but I know the 3.8 a little. Naturally the 3.8 bass was awesome. I was listening in a large room, too.
However I was just thinking today how happy I am with the bass response I do get. It's deep, controlled and tuneful, beautifully defined. I could take a notch more of it but I might not like that in the long run. I run a Sima Celeste W-4070se ( 70 wpc ) and Ensemble Voiceflux cables. The speaker cables helped the bass, then bass took several more steps upward when I added Ensemble Powerflux AC cords to my Shanling CD-T100 and my Klyne SK-5A.
However I was just thinking today how happy I am with the bass response I do get. It's deep, controlled and tuneful, beautifully defined. I could take a notch more of it but I might not like that in the long run. I run a Sima Celeste W-4070se ( 70 wpc ) and Ensemble Voiceflux cables. The speaker cables helped the bass, then bass took several more steps upward when I added Ensemble Powerflux AC cords to my Shanling CD-T100 and my Klyne SK-5A.