OK, the sound, well I have to say that on initial start-up I was disappointed with the results of all my hard labour. The sound was dull, dynamically restrained, with a shut in quality to the vocals, with the overall sound best described as small, bass had a thrummed quality rather than well delineated and was not too clean - not a good start to say the least. So, do these need to be run for a period of break in?

I connected them to my AV amp and used a CD system 'burn-in' track on repeat overnight and throughout today. This evening they are far better, there is more punch to the sound, things like 'mark trees' have a real shimmer to them and Hi-Hat rides are clearly discernible from normal cymbal strokes as are both rim and centre strokes. Vocals are open and detailed with good timbre and emotion, a vast improvement on yesterday and I’m far happier. The only issue is that thrummy bass – most of the time it’s fine so I suspect this is a room interaction. The problem would appear to be in the low 100hz region (110-140) at a guess, but I’ve no way of really measuring this, but I suspect a DIY panel resonator will be on the cards shortly, though I’ll wait until I feel the speakers have stopped changing. I also suspect a MagneQuest transformer upgrade wouldn’t go amiss to aid overall control as well.

I don't know if any of the above has been noted by other builders, but the change over the last 20 hours has been quite dramatic to say the least!

Paul.