Horn for Radian 950

[Andrew1211]

If I remember correctly the hf10ak was more sensitive and had more energy high up.
But both are fine, you can not go wrong.

Thanks
Which one would you personally choose?
Hf10ak?
Maybe you know the difference between ak, rt etc?

 

[jzagaja]

Thanks for advice , but in Ukraine it now costs 160usd for pair

how much is k402?

 

[Andrew1211]

how much is k402?

Pm

 

[hasselbaink]

Finally i have got my k402
http://i.piccy.info/i9/7ff92abde7940e675c41b15edd0a127a/1543344959/183595/1281325/E46CAF5E_DB03_4723_A374_8947812707D3.jpg
But they are in much worse condition than i expected
One horn is almost brilliant but the other one has serious problems with paint (it just falls off the walls like chips)
In your opinion if i repaint them will it make some difference on the sound?
And the second question is horn tweeter
I’m choosing between beyma cp25 and faital hf108 with sth 100 horn
My friend prefered beyma over faital
He told me that faital sounds bad on low volumes, is it true?

Where did you buy the K402 horns?

Best,Kris

 

[Andrew1211]

Where did you buy the K402 horns?

Best,Kris

From one guy that have made wooden 402’s
I thought that he might have original ones that he used for making these

 

[jzagaja]

Do you care about getting the throat angles to match?

A modern driver like yours has a throat entry half-angle of 10.3°, see here:
Radian 950 pb exit angle 10.3° (20.6°)

The perfect jmlc horn would be one that has a throat that matches this angle.

These would not be perfect:
Azurahorn -Le Cleac'h Acoustic Horns - Products
...because these jmlc horns all have a T factor of 0.8 or lower. This means they have a throat entry half-angle of 5 to 6°. This angle is an excellent match for many vintage drivers, but not for yours.

Auto-Tech and other sites don't seem to state the T-factor or throat angles of their devices. Doing a guesstimate based on the length of the JMLC-350, its throat entry half-angle would be about 4°.

For your throat entry half-angle of 10.3°, the ideal throat continuity would be achieved with a jmlc horn having a T factor of about 1.4 - which dictates that it would be a rapidly opening horn, of about 19cm depth.

I was asked to design Iwata 200 for Radian 950. This is my proposal based on JMLC spreadsheet with built in adapter. It makes horn longer.

 

[Andrew1211]

Nice, but this is custom so it will be very expensive
Very nice design though

 

[jzagaja]

Do you know how expensive it can be?

 

[Andrew1211]

We had a conversation before about custom horns
I don’t say it is expensive, but it is too expensive for me

 

[jzagaja]

I don't remember - can you recall?