Great sound from PA Coaxial?

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#23
arcgotic said:
Great sound indeed!
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Possibly, but neither coax, nor PA 😱

freddi said:
Eminence has made decent coax for years - but to my limited knowledge, only on custom basis and not in their standard lineup
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They don't make any full coax'es (for the generic customer), but do offer the option of using any screw on CD with their KL301xCX series. Response of the KL3012CX-8 looks quite good and horn to cone transitions seems to be improved over the cheaper ones. Anyone with actual experience?
 
#24
It's not a coax, but a Fane Sovereighn 12-250TC could fit the bill. They are great 12" fullranges speakers that are cheap (80€ down here). And their peak at 2-10K is easy to tame with a foam grill or a simple notch filter in the box. On low power (max 15w) they are usabe untill the 40's without woofer, in a 2 way they can be used full power. But at 98dB real efficiency (advertised as 101dB), you probally need only a few watt in your house. A 77L sealed enclosure (wich i did build for someone) gives you a FS of about 40Hz and a F3 of 60 (so perfect to pair with a subwoofer) and the sound is great, even on it's own...
 
#33
Audio Elite said:
Do you have any more details you can share?
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Review from a buyer FAITAL PRO 12HX230

"Commentaire: Good driver First, thanks to TLHP who was probably the first to deliver the brandnew Faital Pro 12HX230 in Europe 🙂
Everything in this order went pretty good and even french and german post worked well together 🙂

Unfortunally, Faital declared the 12HX230 for many months with 4,3 kg, in fact it's 5,12 kg. Meanwhile, Faital corrected the information after i informed them, but i never got an answer from them. So - that's not a nice service 🙁

The strenghth of the coax seems to be the spread of the tweeter wich is pretty regular from 0 to 45°. Unfortunally, the lowest recommemded crossover frequency is 1700 Hz where the woofer still looses about 10dB from 0 to 45°.
One should not ignore that Faital scales his graphics 100 dB. Some competitors do also, some others scale 50 dB. So, a pretty linear response at a 100 dB scale, perhaps with some 1/6 octave smoothing, could force someone to build a pasive crossover, but in fact, it's still not easy to get a linear response with a dsp network.

Anyway, the strenght of the tweeter recommends the 12HX230 for natural reproducing monitors. I use them as a pair mainly as stereo-setup for electric guitar and bass with a modelling device (Line6 Helix), powered each by a Hypex PSC 2.400D in ultralight carbon-sandwich baffles with about 55 liters net. They also have the ability to be used as a small PA cause with a lot of work on the DSP network, they sound pretty natural. But be aware, that there are a lot of peaks and dips wich will make it difficult to get the same linearity with a passive crossover. I suppose, this will be true even for other 12" coaxial drivers.

On my wishlist for a future version:
- A Neodymium-Version with a weight less than 4 kg.
- A more performant tweeter with a crossover at about 1.200 Hz
- less beautifulk but more true measurements
- a better customer support from Faital or at least any kond of customer support."
 
#36
Regarding the Faital 12HX230 the issues are alleviated by using the 10HX230 as it has wider dispersion at the crossover point. Even with a bigger compression driver the horn is quite short so it would not be likely to load low enough to allow for a lower crossover.

You could try a higher order high pass on the comp and moving the crossover point lower, as the spec is:
4) 12 dB/oct or higher slope high-pass filter
 
#40
Audio Elite said:
Do you have any more details you can share?
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Sorry, I missed this.

The 10HX230 has been a rather good driver so far. The kHz range is not as smooth as a good HF horn, but is definitely workable. I managed a passive crossover with 4x components which produces decent sound. I have them loaded in some approx 20L ported boxes tuned to 70Hz. When the speakers are up on a stand (PA situation), the LF response needs quite a lot of EQ to get back into shape.

The real eye-opener was when I applied some FIR filtering, and got some of the best high-fidelity sound I've heard in a long time. The clarity was extra-ordinary.

Playing Dreams by Fleetwood Mac, the backing vocals were very very clear - I could hear each voice individually.

The 10HX230 also does well at high power. The last gig I took them to, just before lockdown, featured 1980s Disco Divas You Might Have Heard Of If You're Into That Genre. They wanted it nice and loud, and they (and I) were very impressed with how much sound was coming out of those 10" coaxials (I did also have a pair of 15" subs).
I've run those drivers up to 100V peak with sine sweeps, and they held up well until the final sweep, where quite a lot of harmonic distortion was evident.
At the gig, each 10HX230 had a channel of a Powersoft T604, which IIRC nudged the limiters once or twice (I was busy mixing, so couldn't keep an eye on the amps) at 1250w peaks per driver. The sound remained excellent throughout the night.

Such high power levels appear to be fine for short-term peaks, but I'd be careful about getting too close to the limits for music playback.

Hope that's useful.

Chris
 
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