JBL 4367 in the house

[Matt Bell]

Mine arrived a couple of months ago. Once I got the LF correction sorted, the sound was pretty damned good.

(And in case anyone's worried, the sofa in front of the right-hand speaker is now no longer in front of the speaker.)

 

[TheBatsEar]

Been itching to setup the 4367 in the house, but with the delay in getting the cutting boards to setup the right size platform, I just couldn't wait and put it near field right in front of everything to try out.
Behind it are the sopra n2 and klipsch forte iv, both are unbelievable high achiever in its own right.
Imaging JBL is winner no contest due to the wide freq coverage of the horn.
But because it only has ~100hrs, the sound is abit shrill and "hard", comparing to the forte iv more mellow, approachable smooth sound.
All push by mono AHB2. but I have a feeling over time this would surely be a keeper.



View attachment 292500

Man, i would love to have a listen to your stuff, very cool

 

[fredoamigo]

Well, this is just a temp spot. Once the cutting board is here, the platform for it to sit 6 inches up would be Bamboo->granite->Bamboo.
If any expert here have a better (AND more cost effective) suggestion for a solid platform to lift this fatboy up 6-8 inches, please let me know!

In my case, after a number of positioning and stand height tests, the best result was with a stand height of 19 cm (i.e. between 7 and 8 inches). This way, the axis of the horn is slightly above my ears during listening, which puts them in this configuration at more or less the same height as the M2s.
I've never understood why JBL doesn't sell the stands as options, or at least why they don't recommend them?

 

[BlackTalon]

Well, this is just a temp spot. Once the cutting board is here, the platform for it to sit 6 inches up would be Bamboo->granite->Bamboo.
If any expert here have a better (AND more cost effective) suggestion for a solid platform to lift this fatboy up 6-8 inches, please let me know!

CMUs are 7-5/8 inches tall. If you want closer to just 6 inches get nominal 6 inch thick ones (will be 5-5/8 inches wide) and put them on their sides.

 

[bryan0101]

For the height, I think I might goto Ikea and get another pair of cheap cutting boards to make it 7.5" to try it as well.

And a grave warning to anyone getting the 4367........
It will make ur neighbors hate you, losing alot of sleep, and under-performing at your job.
The sound settled down after couple days of high SPL blasting (or my ears got used to the initial shocks), I cannot stop listening to it at night at low vol, weekend I cranking it up so loud without a hint of distortion, one can hear it 2 houses down with windows all closed.
Unlimited SPL with no distortion.
Unbelievable.

 

[bryan0101]

I got couple more ahb2 for my second system, but figured I'd try doing biamp w the 4367 just out of curiosity. Shouldn't hear much difference. 2 seconds after connecting them, I knew they can't go anywhere. The air, 3D effect, details, are insanely good. Do not be fool by whatever 9xdb spec, give them whatever current u can throw at them. they'd take it and u'd be surprise how many nights of sleep deprivation one can endure.

 

[dped90]

JBL 4367 Studio Monitor loudspeaker Page 2

www.stereophile.com

Regardless of how great they must sound, how noticeable will likely be the beaming from the 15" woofer? No more or less than Pierre's speakers? See posts 152266, 15276. https://www.diyaudio.com/community/threads/beyond-the-ariel.100392/page-764

 

[Duke]

Regardless of how great they must sound, how noticeable will likely be the beaming from the 15" woofer?

My understanding is that the pattern matching in the horizontal plane in the 700 Hz crossover region is quite good in the 4367. So if anything, I would expect the crossover region to be more "invisible" to the ears than with most speakers.

 

[Bugal1998]

JBL 4367 Studio Monitor loudspeaker Page 2

www.stereophile.com

Regardless of how great they must sound, how noticeable will likely be the beaming from the 15" woofer? No more or less than Pierre's speakers?

Likely not noticeable at all.

Per an interview with a JBL engineer, the construction of the woofer is such that as frequency increases the middle of the cone progressively decouples from the outer cone area in a cotrolled manner (i.e. not via breakup) effectively acting as a smaller radiating driver, and the cone geometry further reduces beaming. The claimed result is less beaming than otherwise expected from a 15" driver and wider bandwidth without cone breakup.

Measured results, while not absolute technical perfection, suggest the crossover challenges were addressed well enough to be essentially transparent.

~1db of deviation in the horizontal early reflection directivity index, which is perceptually the most important, and a narrow -1.5 to 2db dip in estimated in-room response (preferable to a peak). Further, the crossover is in a region that is potentially less sensitive to our ears.

 

[dped90]

Likely not noticeable at all.

Per an interview with a JBL engineer, the construction of the woofer is such that as frequency increases the middle of the cone progressively decouples from the outer cone area in a cotrolled manner (i.e. not via breakup) effectively acting as a smaller radiating driver, and the cone geometry further reduces beaming. The claimed result is less beaming than otherwise expected from a 15" driver and wider bandwidth without cone breakup.

Measured results, while not absolute technical perfection, suggest the crossover challenges were addressed well enough to be essentially transparent.

~1db of deviation in the horizontal early reflection directivity index, which is perceptually the most important, and a narrow -1.5 to 2db dip in estimated in-room response (preferable to a peak). Further, the crossover is in a region that is potentially less sensitive to our ears.

Somewhat off topic, but I wish that Troy Crowe would have done directivity plots for this woofer.

Those are my Altecs Troy measured. Presumably, he can use them to build if not a two-way then at least a three-way (less beaming?) system, using this horn and a tweeter waveguide? https://josephcrowe.com/products/3d-cad-files-horn-no-1994-es450-biradial-for-jbl-2446-2-throat

But not using Pierre's TH4001/Radian 745Be combo. See posts 15266, 15376

Beyond the Ariel

Hi Lynn Olson, thank you for the explanation in your post. If I understand correctly your other posts, you plan to use a passive cross-over. Should its resistance not be added to that of the output resistance of the amplifier and the conductors? I think that apart from that, I have all the...

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