Instead of hijacking the OB thread... how does a 2xRS225, Neo8, Neo3 OB sound?

[JasonP]

Re: Instead of hijacking the OB thread... how does a 2xRS225, Neo8, Neo3 OB sound?

Hahaha, it seems great minds think alike, or something! I too am working on a sim with the ZA14W08 on my OB dipole design and possibly the DXT. It'll be interesting to later compare and contrast our designs ;)

[natehansen66]

Re: Instead of hijacking the OB thread... how does a 2xRS225, Neo8, Neo3 OB sound?

I say stay the course! With 2 of the RS' per side on a baffle you ought to be able to get to 80-100 without extreme eq. You have a sub, right? Look at the Nao Note, and the Orion. I think Linkwitz crosses that Excel at 120hz........

And the RS would be ok to cross at 800-1000 to the Neo8, would it not? I'd also vote to stick with the Neo3 in dipole mode.

FWIW, I got my Neo8's today and they're super easy to work with sans baffle.......+8db 850ish for a 900hz lr4. A good bit of boost for the planar but for sane apartment levels it sounds fine. Be interesting to see what happens with some real volume. Measurements taken 4' off the ground from about 30" away in 15 degree steps, 3ms gate.

[jonasz]

Re: Instead of hijacking the OB thread... how does a 2xRS225, Neo8, Neo3 OB sound?

In the latest iteration of Orion the W22 is crossed at 92Hz.

[fjhuerta]

Re: Instead of hijacking the OB thread... how does a 2xRS225, Neo8, Neo3 OB sound?

So.. yeah. A pair of RS225s down to 80 Hz is doable. 120 Hz seems easy (according to SL and his Phoenix). I'm still leaning towards a U-frame with the 225s and an MTM with the ZA14's crossed over at 250 Hz, 4th order.

My plan is to cross them to the tweeter at 2KHz, 4th order again.

Here's something I'm unsure about. I could probably do this by trial and error, but an error would be somewhat costly.

1) SL uses an 8" midrange and according to him, an OB doesn't have many issues getting to 1.4KHz, 4th order. So, I'd assume a pair of 5"s at 2 KHz would be OK?

2) I'm assuming that the extra midrange output will not allow me to use the Vifa DQ25s at 1.8 KHz.

3) Would a 4th order 2 KHz filter make sense for my dipole? Since my mids are far smaller than SL's I'd expect so. I'm also thinking it'll be a pretty high output speaker, even with the ZA14's, since I'll be crossing them quite a bit higher, so the Vifa DQ25 will not be able to go much lower than 2KHz, if not higher. If I need a lower x-over point I'd need to switch to the RS28 or the DXT tweeter. Which I don't want to, because I'm planning to use front / back firing tweeters (SL's site is a goldmine of information!) and I already have 4 DQ25s.

Opinions? I'm assuming the baffle will be narrower, too.

(I've pretty much abandoned the idea of a Neo8 based dipole, BTW. I'm convinced the way to go would be with Neo10's, and I hadn't noticed how expensive they are now!).