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I sold the SPL EQ last summer. The "sound" was to colored, and the parameters can never be set so accurately.

@ Ian Mackenzie
I fully agree with you !
For that reason, I will leave the speakers the way they were originally designed by Greg Timbers.And the little peaks I eliminate with some phase linear...

Earl K

thanks for your effort ! Great work ! i know the thread and guido too ;-)
so in all graphs i can see a little peak in the 3K range !
i think in my situation the 4425 is definitly the...

and that's why I'll stay with the 4425 !
I have heard many speakers in the last few years. Many were from the studio sector, many were high-end products from renowned manufacturers.Even the most...

thanks for the reply !

now i'm playing here with a Sonnox Audio-Unit Plugin EQ addad to the player software pureMusic.
Sweeping arround the freq-band with pink- or white noise was helpful to...

Questions about my
JBL 4425 equipped with

> 2342 Bi-Radial Horn
> 2415H "salt shaker phase plug"
> Radian 1225/8 Aluminium

listening to this horn speaker sometimes causes 'slightly'...

very cool setup ! and the 'Yammis' too :applaud:... but a 2360 is a bit to big for my room.

is the 2226 enclosure DIY , and what's the enclosure netto volume ?

The Cd EQ is also done by the...

Yes , there is a 140L enclosure tuned to 40Hz.
i think the f3 is near 40Hz , -5dB is ca 36Hz ( dashed curve)
can this be correct ?

62889


so here i calculated the 2226H : the grey line is...

all parts you suggested are not in actual production, so i have buy them as used...
If "money is no object" i would go for the Guido Behringer BLS Horn +Radian Truextent Beryllium & Beyma...

oh ! now i calculated the TSP for the 2226 and you are right. The f3 will be around 60Hz, in a enclosure ca 75Liter and that is not deep enough.

hello,

i'm looking forward to build a big 'only' JBL based Studio Monitor.

I choose some parts like the 2226 bass ( 40-45Hz is enough for my taste)
and something like a Bi-Radial JBL Horn...

very interesting links ! thank you ! :)


" a house curve is perceived flat response – that is, it sounds flat, not measures flat. "

if you have a acoustically hard sounding room, you have to...

for example : a fine or "right" sounding master should look like this slightly 'roll-off' EQ-curve ! (only the heights are interesting here)
i have the same tools here like very good plugins from...

ok, thanks a lot ;-)

i measured my ... ( must google translation :D...) my "sense of hearing" , and the result is =
My ears are NOT able to hear above 15-16Khz... OMG i'm 42 Years old man !:eek: ...

some people use additional super-tweeters on JBL, Tad, Ray-Audio two way Horn-speakers.
a few years ago i read about the slightly 'roll off' of some compression- drivers on CD-Horns,especially of...

Hi Friends !


now ,after more than two years of swapping between the original JBL Titanium vs the Radian Aluminium :

i prefer the Radian Aluminium diaphragm !

on the little bum cheek horn...

@ Guido
...Oh,Goodness! ...now i Know who you are ;) Pass DIY Amps, BLS Horn , Everest Clone...da gibt es nicht viele, die eine Everest 2 in solcher Qualität nachbauen...so klein ist die Welt!
und...

...look in your signature = 4425's + ....:hmm:

No hole !

5435454355

i will make better pics soon...
here you can see some holes in the Mylar



54352

Hi, today i swapped back to my original titanium D8R2416... Hm...with some music (i prefer electronic music) they sound more forward, more "aggressive"( i think it's this unique JBL Professional...

correct!

i guess the little vent hole prevent a vacuum behind the diaphragms , or perhaps compensate atmospheric pressure...

The Radian diaphragms don't need this hole ,because the Mylar...

Ok, thank you Rudy :thmbsup:,

i think you're right.I measured my original JBL Ti 2416H diaphragm with 3,2 DC. The radian 1225/8 is the same,so the replacement on my 2416H/2415H will be right.It...

Hi Rudy,

interesting !

Speak of the devil and the devil shows up!
Do we all have 2415s :crying:


My 4425 are from 1988 and really originally fitted ,nothing was changed.
Only a few weeks...

today i received my new Radian 1225/8 and installed them with the 1225-C back cap quickly.:bouncy:

very clean sounding with good transients & resolution :)
i think they are a little bit smoother...