New Celestion "AxiPeriodic Driver"

[speedy6963]

Time to awaken this thread, I got myself a pair of these drivers first horn on the list is a TAD TD4001 clone

An externally hosted image should be here but it was not working when we last tested it.

 

[Zero D]

@ speedy6963

Not jealous

One of the reasons they are more expensive than we first thought, must be due to them being made in the UK ! I wonder why, & how long that will last ?

 

[ErnieM]

Very cool. What other drivers do you have experience with? Thanks.

 

[speedy6963]

Very cool. What other drivers do you have experience with? Thanks.

TAD beryllium and Radian beryllium and various faital pro

 

[chris661]

TAD beryllium and Radian beryllium and various faital pro

Sounds like some interesting comparisons!
Let us know how you get on.

Chris

 

[speedy6963]

initial impressions, plays lower with less distortion than Radian 950 beryllium , needs some eq up top as expected. very good sounding

 

[ErnieM]

Do you hear any advantage for the Radian above 1k when both are eq'd the same? Thanks.

 

[chezalfredo]

Wow great!
@speedy6963 any chance to post some measurement?
On which horn are you testing those?

 

[speedy6963]

Wow great!
@speedy6963 any chance to post some measurement?
On which horn are you testing those?

tested on eliptrac 400
frequency response

An externally hosted image should be here but it was not working when we last tested it.

Distortion

An externally hosted image should be here but it was not working when we last tested it.

 

[speedy6963]

tested on eliptrac 400

frequency response
Shared album - John Cozad - Google Photos

Distortion
Shared album - John Cozad - Google Photos

 

[Omholt]

I have a pair for sales if anyone are interested. They are basically good as new. Contact me by pm.

 

[Ro808]

Thanks Rob. I wonder what happens past 12 kHz?

That is pretty much beyond 'the vocal range' for which the Axi2050 was intended, so maybe Celestion didn't consider it relevant

While I was searching for the origin of some good ol' fiberglass diffraction horns that I've bought, I stumbled upon some Outline horns that look quite similar to the Celestion LH9045R.
The Outline horns are a bit smaller though and 60x40.

 

[Ro808]

Another interesting large format driver that was recently anounced:

QUICK ACOUSTIC SPECS


Nominal Impedance: 8 Ohm

Minimum Impedance: 8.3 Ohm

AES Power above 0.9 kHz: 120 W

Maximum Power above 0.9 kHz: 240 W

Minimum Crossover Frequency: 0.7 kHz

Sensitivity (1W/1m): 109 dB

Frequency Range: 0.5÷20 kHz

Voice Coil Diameter: 86 mm (3.4 in)

Diaphragm Material: Ketone Polymer

Diaphragm Shape: Annular

Flux Density: 2.2 T

Re: 6.8 Ohm

Phase Plug Design: Radial

 

[Ro808]

The measurements where done with the LTH142, which is way too small too unleash the full potential of this driver.
The breakup looks modest and Faital's plots are usually not far from reality and the Ketone Polymer diaphragm provides a smooth sound.
People have used the smaller HF144 from 600-700 Hz without issues. This one should take 500Hz.
It remains to be seen whether the radial plug does well with a high flare rate at the throat.

 

[ErnieM]

Any updates?

 

[magig160]

Axi2050

the horn Celestion LH9045R 2 90 x 45 Wide Bandwith Horn

 

[bwaslo]

1900 pounds for one horn and driver

 

[nc535]

Shipping to US is another 500

 

[speedy6963]

I have a pair of the Axi2050 that I will be selling soon on Audiogon. Ended up liking the radian 950 beryllium better

 

[ErnieM]

That's 2-0 so far....what does the Radian do better?