Already on the way! Ordered a big bag of BBQ hardwood pellets from Amazon for the fill, as recommended by Skylan.
Amazing info, thank you! I played around with it again and settled on something in between toed flat (not toed in at all) and how I had it before. Good compromise between brightness and imaging now. I have them at 8 degrees toed in from flat. 22” away from the side wall (to side of speaker cabinet) and 27” from the front wall (to front baffle of speaker).Your listening assessment is correct, as in all BBC-style speakers there is some flare at the bottom of the tweeter's passband that not only will stick out in the direct sound coming from the speaker but will also reflect from the side walls and make the sound 'brighter' (but also artificially 'clearer'). As you can see on the table below 'brightness' refers to the 2-5kHz region, not the top end as many believe.
A quick review of the horizontal directivity plot shows that the speaker response is probably flattest when pointing some 12-15º away from the listening spot, but this will depend on how far they're sitting from the side walls and whether or not the walls have some level of absorption or diffusion.
But you may prefer having them pointing straight at you or with no toe-in (with the axis parallel to the side walls), and that's what matters most. No toe-in will produce a dip in the presence region, at broad-ish peak centered at 3.5kHz and some top end roll off, making the sound more 'distant' or 'laid-back', and perhaps a tad 'brighter', but less 'airy', overall 'sweeter' with a a touch of 'zest'.
After some experimentation with my own LS3/4As, I’ve been happiest with about the same degree of toe-in. Angling them directly at me makes me feel sick, quite literally!Amazing info, thank you! I played around with it again and settled on something in between toed flat (not toed in at all) and how I had it before. Good compromise between brightness and imaging now. I have them at 8 degrees toed in from flat. 22” away from the side wall (to side of speaker cabinet) and 27” from the front wall (to front baffle of speaker).
May I ask what you are using between the speakers and top plate?I use wooden stands, the HiFi Racks ‘Duet’ models, for my LS3/5As.
I didn’t find much difference from the previous metal B & W stands, except in the bass.
It’s subjectively ‘tighter’ with the Duets.
Also, the stands look really nice in oak.
I don’t like black stands at all.
HiFi Racks use flattened ‘bumpons’, which after a few weeks grip the speakers surprising well.May I ask what you are using between the speakers and top plate?
I used Blutak on the old B & W stands.
You probably used too much blu takI would never use Bluetak.
Several times I have seen it rip veneer off speaker cabinets when lifting speakers off it.
How many valuable speakers did I see get ruined by it.
The secret is to twist the speaker, the shear force will break the seal, and of course small rice grain size at each corner is all you need.Several times I have seen it rip veneer off speaker cabinets when lifting speakers off it.