After many years of discounting Trifield in favour of direct I have now persevered and find it spectacular.
I put this down to my centre speaker not being broken in and the fabulous iPlayer house/rave content available.
A night in with a bit of quality house music, big screen, Meridian Trifield, sorted.
I still don’t really understand the depth adjustment however, all is so good no worries.

Meridian G61, Zen Stream, Arcam P349, Kef XQ30 / 50 combo.