Is it possible to cover the whole spectrum, high SPL, low distortion with a 2-way?

[ErnieM]

First commercial use of the Axi I've seen.


Know of any others? Thanks.

 

[camplo]

I no longer feel like my design is that ugly after seeing that lol...

 

[daqvin_carter]

Anyone know what that K-693 driver really is?
Is it an Axi-2050 made for Klipsch or something else?

Also, know if anyone plans to exhibit at RMAF this year using the Axi-2050?
Thanks

 

[Ro808]

It won't win design awards, based on the appearance.
The baffle around the horn mouth may be functional, but a scaled-up K-402 - matching the size of the bass horn - would be more visually coherent and most likely allow for an even lower xo point.

Or just scale-up the whole system using dual 15" bins + Bertha-esque mouth extension

 

[Ro808]

Anyone know what that K-693 driver really is?
Is it an Axi-2050 made for Klipsch or something else?

It's the Axi2050 used with an in-throat acoustic lens designed by Roy Delgado in order to improve polars above 6-8 kHz.
Even without the lens you can obtain decent pattern control from the K402 + Axi2050 as demonstrated by Cask05's measurements.

 

[daqvin_carter]

@Ro808 Thanks for the graphs. Hoping to hear something with the Axi-2050 this year.

 

[camplo]

So this woofer/port firing into a line is not a new concept aye? hold on...when I choose ported rear chamber in the hornresp, for a front loaded horn, is this what its doing?

 

[Ro808]

Very likely, although it seems best to leave this question to David McBean.

I like this reflex ported FLH by Inlow Sound.

 

[phase_accurate]

This is different form the new Jubilee variant. There are lots of PA horns with reflex openings to the outside like the Inlow example. The Jubilee looks as if the reflex openings were radiating into the horn throat (which isn't new either). And it does somehow seem to lack a front chamber.
While I can imagine that it sounds nice I am having difficulties to believe the LF frequency respose specification.

Regards

Charles

 

[camplo]

1w 1m me holding mic (lol) I tried to mimic the spectral graph above.

 

[phase_accurate]

What kind of horn/waveguide was used for this measurement ?

Regards

Charles

 

[Ro808]

This is different form the new Jubilee variant. There are lots of PA horns with reflex openings to the outside like the Inlow example. The Jubilee looks as if the reflex openings were radiating into the horn throat (which isn't new either). And it does somehow seem to lack a front chamber.
While I can imagine that it sounds nice I am having difficulties to believe the LF frequency respose specification.

Regards

Charles

It's indeed different Charles and that's why I mentioned the Inlow horn.

A horn where the cone is not visible from the outside is in my opinion best used for reproduction below approx. 120-150 Hz.
In this regard I agree with Mark Kravchenko.

Perhaps this diagram explains the Jubilee bin.

 

[phase_accurate]

I think the ports enter the horn at the same place (in terms of length or depth or whatever term one prefers) as the driver.
I have seen such a topology used within a horn-loaded PA sub of a German manufacturer decades ago.

Regards

Charles

 

[isitone]

Föön Audiotecture

 

[camplo]

What kind of horn/waveguide was used for this measurement ?

Regards

Charles

350hz E-tractrix LMH out if Germany made them (can find them on fb or ebay)



I was wondering… What do you guys think about the electro voice HP420???

 

[docali]

1w 1m me holding mic (lol) I tried to mimic the spectral graph above.

Is this without any normalization? What happens beyond 14k? Where do you set the xo point with this horn?

 

[camplo]

I'll have to re-post the response when I get home I didn't notice and I clipped it at 14 kHz, sorry about that....the spectral is normalized I believe. Above 14khz the trend/slope follows to about 19-19khz then dives

 

[docali]

i mean the frequency response curve. Is that the raw response without any normalization? There is a very even decay towards HF and it looks like that it could be done with a passive xover/eq to get the HF right.

 

[SubSoniks]

It's indeed different Charles and that's why I mentioned the Inlow horn.

A horn where the cone is not visible from the outside is in my opinion best used for reproduction below approx. 120-150 Hz.
In this regard I agree with Mark Kravchenko.

Perhaps this diagram explains the Jubilee bin.

I built 8 x 15" for PA use about 25 years ago, based on a discussion I had with the late Steve Hewlett of Fane Acoustics, the Void Stasys X V2 is also of a similar design principle. I posted the concept on another forum about 12 years ago, somehow Klipsch still managed to get a patent on it.

 

[camplo]

i mean the frequency response curve. Is that the raw response without any normalization? There is a very even decay towards HF and it looks like that it could be done with a passive xover/eq to get the HF right.

Oh ok, yes it is a raw frequency response.