Asathor - a JBL 4367 Clone

[grahamgraham]

Also, thankyou very much for all the meaningful curves and data.

EarlK

+1

 

[Rese66]

How can I contact a moderator here in the forum if I want to change the title? I can't send a private message to Dave (planet10) either?!?
I would like to change it to "Asathor - a JBL 4367 Clone" if that is possible.

 

[lupo 1]

Off axis respons is not only important when you are outside the sweet spot. At the listening position, significantly more sound energy comes to the ear via reflections than directly from the loudspeaker. That is why this is also very important on axis.
In my experience you get a very good illusion of the sound when there is a good response off axis.

Those are great looking horns Rese! Your off axis measurements and especially the comments on them are particularly helpful re my induction into this topic.

 

[lupo 1]

and I agree that if you can change the thread title, as above, your build might get the prominence it deserves

 

[EarlK]

How can I contact a moderator here <<<SNIP>>>
I would like to change it to "Asathor - a JBL 4367 Clone" .

Click the little alert sign in the bottom left of any post in this thread ( I've circled it in green ) and then add your request into the newly opened dialogue.

 

[Rese66]

Thank you. I had already found that, but I was unsure because it is there to report misconduct.

 

[analog_sa]

The 4367 is by far my favourite JBL. But how is this a clone if it doesn't use the original drivers? It may be inspired from but certainly isn't a clone.

 

[Rese66]

Well, a clone is never the original. I could have written "Inspired by the JBL 4367", but I don't want to ask the mods to change again.

 

[analog_sa]

A clone would be a speaker using the original drivers, yes, hard to get and a reverse engineered crossover.

There is a thread called "M2 for the poor" which is far more appropriate.

 

[lykkedk]

Rese. --Just saw this thread.

Would it be possible that you post the drawing's / stuffing of them speaker's along with the parts used for the horn, etc...

They look really stunning, and i see they are placed like i do in our livingroom.
They proberly also are very high effency too i guess

Jesper.

 

[Rese66]

A detailed introduction is available on our website - unfortunately only in German.

Asathor - Preiswerte Mannerbox - Der-Akustische-Untergrund

If something is not clear, I am happy to help. I will also make a drawing in Fusion360 soon.

 

[irribeo]

Nice result! With datasheet wooferspecs Qtc=1 gets a volume between 45 and 50 liters, your ~90 liters is chosen because your own measured specs for the woofers you received ?

 

[Rese66]

Thank you!
Please do not forget the resistance due to the x-over, cables etc. when calculating. With passive x-over, I calculate with a resistance of 0.8 ohms. So the Qtc is ~ 0.95 in 90 liters.
I have attached the measured TSP of the LaVoce. They are quite close to those on the data sheet.

 

[Rese66]

There is now a detailed construction plan for the Asathor on our site, which can be downloaded as a PDF.
Since the PDF file is too big for the forum, I added it as an image:

 

[lykkedk]

Rese..

This is really great!
Very useful & detailed drawings.

Jesper.

 

[Rese66]

Thanks Jesper!

I glued in small blocks in the area of the screws behind the woofer. Otherwise the wall thickness is too small for wood screws. With machine screws (unfortunately I don't know the English name) that's no problem.

The braces are only suggestions and can also be simple crosses made from scraps of wood.

Oh, and I think the Celetion Horn is only 320mm wide - I may have made it a little to big on the Plan.

 

[C37]

Rese66, very well done- and thanks for sharing. Quality/price ratio seems very finely balanced here, nice to see.
Also nice website, thanks for the discovery!
Best, Thomas

 

[Rese66]

Thank you Thomas!

 

[raven38571]

I'm interested in this build. Has anyone from this forum built a set?

 

[lung]

Me.

Highly recommended.

Build for a friend. Shown in his partyroom.

Mount the chassis bevor the second paint. Can not wait to hear it.

At first in mono, only one crossover was ready. Start with piano.
Sounds very natural, like a real piano. You can hear at low level with
detailes music or push it loud, you would not get stressed.
The speaker are never agressiv.

Testet with Yamaha Receiver and Crown XLS 1502 listend to Jazz, Classic,
Rock and Pop. Now will build a second pair for my livingroom.