Originally Posted by parapet
I'm just curious as to why you're choosing the Iwata over the SEOS?
If you're sensitive to breakup and want to cross below 1000 Hz to match directivity better, just use SEOS 18/BA 750 over the TD15Ms and call it a day.
Having heard both waveguides/horns on multiple occasions I would summarize that the SEOS definitely has a larger sweet spot and the Iwata beams in the HF.
Well thats for a few reasons. First, I took over this project from someone else and they had chosen the Iwata 600 so here I am. But even so, there are some pros and cons to each method. The pros to me are this:
1. Iwata 600 has a strong horn loading at 600hz so it can cross lower than a seos given the same CD.
2. The BA750 looks awesome and I would recommend it for mang purposes. But in this case Im going for the highest sound quality I can achieve and the BA uses a 2" diaphragm which breaks up more from about 8khz and up. Ive also considered the B&C DE550 to be able to cross low but it also is a 2" phragm so its out. I would use either of if I could buy a Be phragm for them.
3. The SEOS does have a wider dispersion angle but this is going to be a "sit and listen here" speaker. When I worked with the Iwata 300 the narrow dispersion did not bother me. This can be a bad thing or good thing depending on your perspective. For me, it means I can cross a little higher where the woofer starts to beam if necessary and keeps sidewall reflections down.
4. The original owner made an asthetic decision, which I like, to put the waveguide in a mount above the TD15M cabinet. The SEOS doesnt really work well for that.
And what the heck. Its something new and fun.
Good question. Because really the SEOS is the best thing for home use on the market as far as Im concerned. It hits all the important points of hifi.