Hi Peter.Latteman wrote: ↑Wed Oct 27, 2021 3:16 pm Good to hear u are back on track- but I thought the cubes were eventually going to be spheres?
As a side line I’ve had a complement from a fellow diyer who could tell the semi omni worked in my room compared to traditional PnS. Just to get it better for me I’ve removed the mid bass units and am listening to the tweeters only- enlightening as they sound shocking- so meddling with various unit, resistors and caps …..ahhhhhh
Yes I am still going with spheres, I just didn't want to cut any holes until I was completely sure which driver(s) I was using. The steel hemispheres whilst not astronomically expensive are more than a 30cm2 piece of plywood. Don't want to be wasting them.
I think listening to tweeters on their own will always sound awful - it's the same when only listening to mid bass. I wouldn't draw too many conclusions. What frequency do you have them crossed over - about 5-6 kHz ?
The problem with tweeters and first order filters is distortion which swamps detail. That is why adding more of them helps because the work is shared out. I ran into problems with reflections because mine were af 90 degrees from each other and pointing at nearby walls etc. Yours are both firing forwards so I don't think you will have that particular problem.
My move to a tiny 2' cone full range has been one of the best decisions I have made. Less distortion from covering lower frequencies, I only need one so no multiple driver comb filtering etc, it's forward firing so fewer reflections from the walls (better imaging) and I still don't need any padding resistors because the volume from each driver matches really well.
SB65WBAC25-4. About £24 each. Only need 1.5 Litres of enclosure volume. Have very good high frequency dispersion. Winner winner chicken dinner