https://www.parts-express.com/pedocs/specs/290-5642--eminence-kl3012cx-8-spec-sheet.pdf
Response curve is virtually a straight line.......very encouraging although pricey
Response curve is virtually a straight line.......very encouraging although pricey
With coaxials, the one to watch is always the response from the HF driver, since it usually uses the LF cone as the waveguide.
So, interesting, but I'd like to see more complete measurements.
Chris
So, interesting, but I'd like to see more complete measurements.
Chris
My understanding is that DIY Sound Group has a big hand in the design of these and kits are forthcoming. Matt Grant has posted response curves over at AVS and they look ruler flat. I am hoping to build the 12" design.
Denovo Audio Vortex coaxial Speaker Kits
Denovo Audio Vortex coaxial Speaker Kits
are these so called Denovo - Eminence drivers ?
besides that , I couldn't see any graphs there ....
besides that , I couldn't see any graphs there ....
Here are some off-axis measurements for the 12" design Coaxials: Another DIY Group Project. - Page 54 - AVS Forum | Home Theater Discussions And Reviews
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that's looking good
there is also graph for 15" in thread linked few post up , Vortex Speaker Kits | HiFiCircuit
there is also graph for 15" in thread linked few post up , Vortex Speaker Kits | HiFiCircuit
Yes, they invested in custom machining along with Eminence. As I understand it, 2 versions of each driver were made, 1 for pro (Eminence) and 1 for home (Denovo). The measurements are for the home units, which presumably have more "hifi" features than the high power handling, etc, of pro units. I need more speakers like a hole in the head, but these... I do have cabs sitting ready for 12"s OR 15"s.
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Either way, those are by far the most consistent polars I've seen for a coax. I need to measure my JBLs, they similarly have a well managed throat/cone transition.
I agree they are much improved. It would be quite an expensive project but a stand mount speaker 'cube' with top, bottom and side mounted woofers would be interesting. The benefits would be to reduce excursion of the coaxial woofer and extend low frequency pattern control. Probably the power demands would not be feasible for four drivers in such a small space though. Beyond my current budget anyway....
The information here:
Hyperlite™ Coaxials | HiFiCircuit
would suggest that the deveno version has a different transition and so may have superior polar to the Eminence
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Do you have the JBL control 12" coaxials? 322C? I'm curious about those. How are they working for you? They seem to have paid close attention to the transition.
Attachments
Hi Bill:
I actually have the 328CTs. They're 8"s and come with integrated transformers (which I removed). I got a quad of these and got a little freaky with the design- see the album (hopefully this works!). Imgur: The magic of the Internet
Basically they're a waveguided (the stock units used a metal guide I duplicated and improved transitions in wood) coax in a configurable dual-speaker arrangement- you get somewhat different performance from bipole or dipole wiring, but there are side cancellations regardless.
I have to get a good outdoor measurement setup, I can do it now that I have a yahd (moved to Massachusetts).
