JBL 2360 Compression Driver?

[1audiohack]

All interesting!
Don`t know how beaming sounds like, so can`t say on my 2360`s...

It may be hard to hear indoors with all the reflected energy most rooms have but as you walk off axis at some point you will hear the HF drop dramatically, like someone turned it off.

You may have to drag one outdoors to really hear it.

Barry.

[oks81]

Ok! thnx!

Don`t think I bother to bring outside... Yes, the HF drops at som point sideways of course.
But reading the 2360`s is good in normal living room as it spreads quite well.
I don`t know as it`s the only horns at all I have experienced..

[oks81]

Well..
Maybe this is swearing in the church...

Anyway, now I`m playing with BMS 4590 coax drivers in the 2360`s
Crossover is 400 24dB LR.

The BMS fixes the tweeter quite well up to 20k.

Finding this to be a really good driver actually!

Best
oks

[Lee in Montreal]

Well..
Maybe this is swearing in the church...

Anyway, now I`m playing with BMS 4590 coax drivers in the 2360`s
Crossover is 400 24dB LR.

The BMS fixes the tweeter quite well up to 20k.

Finding this to be a really good driver actually!

Best
oks

That driver has always intrigued me. Maybe my next step. The only glitch is that driver is a two-way by itself. ;-)

[Hoerninger]

That driver has always intrigued me. Maybe my next step. The only glitch is that driver is a two-way by itself. ;-)

two-way but coax.
____________
Peter

[Lee in Montreal]

two-way but coax.
____________
Peter

Yeah. But that's another crossover point. ;-)

[Hoerninger]

Yeah. But that's another crossover point. ;-)

Of course, but thinking about horn systems, too little numbers of crossover points means more directivity (longish horns)

For example
two-way: 40 Hz - 900 Hz - 20 kHz (Factor 22,5)
three-way: 40 Hz - 320 Hz - 2,560 kHz - 20 kHz (Factor 8)
four-way: 40 Hz - 188 Hz - 884 Hz - 4,2 kHz - 20 kHz (Factor 4,7)

Klangfilm always used two-way systems devided at 500 Hz. But for the better systems they took two ore more speaker/horn combinations above 500 Hz. which I would like to avoid (personal choice).
____________
Peter

[oks81]

Compared to using a tweeter like 2404 is that with the BMS coax you get a point source.

But I never heard an 2446/2360/2404 combination so I can`t tell what sounds best.

Also maybe a matter of taste

[oks81]

Some facts

For crossover between mid and high I only use a 3,3uF cap.
Supid? Maybe...
But fact is that mid in BMS don`t play high enough and tweeter don`t play low enough to meet in a perfect way to form a good filter.
The standard filter that comes with the BMS4590P actually has an EQ function on the lowpass section to make the drivers sum better.

Measure of the BMS mid in 2360, crossover 400 24dB LR




Measure of high with a 4,3uF cap, later changed to 3,3 for good protection of tweeter.




Both together:




The rest I fix in DSP.

[oks81]

The BMS 4590 can be used down to 300hz.

I have tested both 300 and 350 crossover, but it sounds bad in the 2360.
Crossover should be 400 or higher.

[oks81]

After EQ



400 24dB LR Highpass.

Phase Measure i straight on crossover point @6khz.

[oks81]

Question about Radian 1245 diaphragm:

When I used both the standard ribbed Ti and aquaplas Ti diaphragms I found crossover at 600 to be the best.

If swapping to Radian 1245 alu diaphragm with mylar surround, does this diaphragm maybe sound better trying to crossover at 500, maybe as low as 400 compared to the TI?
Any of you guys maybe tried?

[johanwholst]

Question about Radian 1245 diaphragm:

When I used both the standard ribbed Ti and aquaplas Ti diaphragms I found crossover at 600 to be the best.

If swapping to Radian 1245 alu diaphragm with mylar surround, does this diaphragm maybe sound better trying to crossover at 500, maybe as low as 400 compared to the TI?
Any of you guys maybe tried?

I have said it before, and say it again:
your woofers will do a better job in those frequencies than a compression driver.
Oks, you will never escape my yapping about those resonant cabinets.

Stop thinking and start building!

[oks81]

I have said it before, and say it again:
your woofers will do a better job in those frequencies than a compression driver.
Oks, you will never escape my yapping about those resonant cabinets.

Stop thinking and start building!

God damn johan!! Following me here also for making feel bad about those cabinets
Yes, I will build new!

Thanks for yapping! You are right about those old simple boxes!

Reason for asking about Radian alu is not for me, only me and "Hornlyd" talking about them.
I will stay with the BMS and probably ending up at 450-500 I think when new boxes arrive.

[oks81]

Hi!

Do maybe some of you guys have impedance curves for 2360?