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View Full Version : Radian vs !JBL diphragms



Figge
09-06-2004, 05:05 AM
i am looking for new diaphragms for my 2421A:s there are alot of aftermarket:s out there but how do they compare to the real thing? some say they are better....(sellers ofcorse) i believe its bull! but just wanna see what your experinces tells...

any experiences?

lfh
09-06-2004, 02:16 PM
...just in case: It might be worthwile to ask Stefan at Hi-Fi Kit Electronics for a quotation on original diaphragms. He gave me a substantial discount on 2441 diaphragms. BTW, do you know where to buy Radian in our neck of the woods? The closest retailer I'm aware of is in the Netherlands (Holland Audio Imports).

scott fitlin
09-06-2004, 03:20 PM
Radian diaphragms are now readily available from Partsexpress!

They are good, but I prefer JBL diaphragms! The Radians are smoother sounding, but IMO, the JBL,s have better clarity and crispness and better top end!

There are those who like the Radians better, so its a matter of preference! The price of the Radian is good.

Figge
09-09-2004, 02:58 AM
Halloj :wave:



Originally posted by lfh
BTW, do you know where to buy Radian in our neck of the woods? The closest retailer I'm aware of is in the Netherlands (Holland Audio Imports).


no this was just a guy who sold privat, new in box...but iŽll go with jbl original..

scott fitlin
09-09-2004, 06:15 PM
Another guy I know, Dan, who does some nice audio contracting work also had some opinion of the radian diaphragms. he feels they are less dynamic sounding than JBL diaphragms. He said if price is the factor then he would use these, but only if price was the factor, or in a pinch if he couldnt get a JBL replacement in time!

The JBL compression drivers do happen to have fantastic transient response!

andresohc
09-09-2004, 08:15 PM
I live within half a mile of Radians home office if anyone needs anything from them. (literature, info, parts etc) I havent had a reason to stop in yet.

Ian Mackenzie
09-09-2004, 09:49 PM
The Radians are good for Pro work to keep the rig running for lower overhead but otherwise the JBL part is better.

Ian

Figge
09-13-2004, 10:26 AM
ok i called jbl sweden to get my brand new alu diaphragms for my 2421A:s and suddenly they cost $371 EACH!!! and even if were to buy at that insane prize...they only had one!!! booh!

the titanium (2425/26) however is $199. so i sadly will have to go with those! would this fit into my 2421?

is there a big diffrence in sound between these or is it barly
noticeble?

were can i find jbl prices? not on their site

and last what are the nr:s on these two diaphragms?

2421A D8R2421 ?
2425/6H D8R2425 ?

lfh
09-13-2004, 01:42 PM
Originally posted by Figge
ok i called jbl sweden to get my brand new alu diaphragms for my 2421A:s and suddenly they cost $371 EACH!!!

Figge, did you check with Stefan? If you whine a little, he might give you a much better price (and dig up a pair for you).

Figge
09-13-2004, 01:50 PM
im planning on calling him in the morning!

check his prices....nag abit and check again:)

also gonna check out the 2426H drivers...i cant find anything on the website.

370 dollars each at septon is simply outrageous! i can buy new drivers cheaper than that! (including the damn diaphragms)

Figge
09-14-2004, 04:43 AM
ok. i called hifikit and :( same prices!.

Figge
09-14-2004, 04:57 AM
at ocs the 2426H is $319.00 and in sweden $704...how come? are ocs:s used?

i really dont know what to do now! one things for shure...my screetchy old dia:s must go!

Zilch
09-14-2004, 09:26 AM
2421A = $244

2426H = $136

Am I missing something?

E145-8 = $172 ACK!!

http://www.jblproservice.com/pdf/Transducers%20Parts%20List/Transducer%20Parts%20List.pdf

Figge
09-14-2004, 09:45 AM
:hmm:

Figge
09-14-2004, 10:04 AM
what would happen if i threw in the 16ohms?


i guess the best thing i could do is to get a pair of nice 2425:s with nice diaphragms?

4313B
09-14-2004, 10:17 AM
Originally posted by Figge
what would happen if i threw in the 16ohms?You'd have to toss in a resistor in parallel to maintain the same load and lose the efficiency. That would mean turning up the L-Pads. One would have to run an impedance curve on each diaphragm to come up with the proper resistor value.

Guido
09-14-2004, 10:24 AM
Originally posted by andresohc
I live within half a mile of Radians home office if anyone needs anything from them. (literature, info, parts etc) I havent had a reason to stop in yet.

Hi!

I would be interested in the DCR of their 2426H and 2416H substitudes.
Not one aftermarket dia I measured met the 3,2 Ohm of the original JBLs. And this cause problems.

Figge
09-14-2004, 01:44 PM
well however the case if alu is better than ti. i guess a new 2425 sounds better than a 20+yr old 2421?

4313B
09-14-2004, 03:40 PM
Ok, I did this awhile back. I suppose I could do a few more when I have the time.

andresohc
09-14-2004, 07:23 PM
I called and had the pdf file emailed to me, but it was too large to post, so I found it buried in their website. If the link doesnt work PM me and I will figure out a way to send it to you. Its also on their websiet buried on the site map under their 1" diaphragms.
It has the DCR, 3.3 Ohms and a plot of the impedance curve. The representative said the 1225 is the same replacement for both drivers (?) Dang, pretty different drivers. Well I dont write this...

If you want an actual measurement, I might be able to go over and ask them if they would allow me to measure two or three for DCR.
Here is their pdf link

http://www.radianaudio.com/products/pdf/high_res/1245_1225.pdf

Originally posted by Guido
Hi!

I would be interested in the DCR of their 2426H and 2416H substitudes.
Not one aftermarket dia I measured met the 3,2 Ohm of the original JBLs. And this cause problems.