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Hi, Marcus

As I understand it is 15” loaded into 110-150Hz horn, MF compression driver in 350-400Hz horn, Ribbon tweeter and a pair of tapped horns? Looks good.

If it were up to me than I would paint the entire baffle with tweeter and MF in black– in my view it would make the whole speaker more organic. This is however just visual part. There is some functional, more important part.

The tweeters are mounted flat at the baffle and it is not very good. Do you do not want to have any flat surface around tweeter as it give some HF reflection fog. I am sure that the tweeters are time-aligned, so you can’t move them. You however might cover the front of baffle around tweeter with some think soft material to minimize the reflections. The throat for your upperbass horn looks a bit too large but it is what it is. The tapped horns look very nice but they must be outside the upperbass not inside. Moving then out you will gain a LOT of imaging.  You also, if you crossover point on tweeter not too low, might want to exchange the position of MF and HF channels. Ribbon tweet are hobble MF drivers, do not believe the people who say contrary. The only reason I see for you to put the tweeter in such a prominent position is because you drive it too hard and it crossed too low. With 400Hs horn that you use you might get good 10K out of your MF and if so then I do not think that your tweeter needs to be in your ears level anymore.

Anyhow, good work, keep the speakers further from the back wall and play with toeing-in and out.

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