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View Full Version : 2426H vs 2425H ??



Guido
01-26-2004, 01:58 PM
Hi Forum!

Yesterday I measured the response of a brandnew 2426H on a brandnew 2344A. This stuff is for Ralfs DIY 4430's.

To protect the Driver I connected it via a 12dB xover with 1500Hz highpass (from a MR805).
No Horn EQ as far as I know.

See what I got. The 2426H looks quite good at high frequency.

So my question is:
Has the 2426 a better high frequency response than the 2425?
JBL states "2", slightly different, usually improved.

Can you help?

Guido
01-27-2004, 09:43 AM
Come on my friends.
No idea?

Robh3606
01-27-2004, 10:31 AM
The changes are very subtle. Ever see a 2425S?? It looks just like a 2426 without the screw on driver mount. Same gap, same replacement diaphram and same phase plug so what is different?? Flux is 1.8 2426 and 1.7 2425 same 2 mil thick diaphram. Anything else asside from the screw on adaptor?????

Rob:)

Earl K
01-27-2004, 10:46 AM
Hi

Apart from the mentioned differences of gauss values and attachment fixings, I believe there was a change in the metal type used for the "Flux Stabilizing Ring". The earlier 2425 model used a pure silver ring while the 2426/7 uses a copper ring .

I own both and I don't hear any differences. I prefer the 2426 with it's removable snout. It's a lot more flexible for horn attaching.

regards <> earl K

Jan Daugaard
01-28-2004, 02:10 AM
Hi Guido,

there are red, green, and blue curves for the frequency response. Do they reflect measurements at different angles?

Regards
Jan D.

Guido
01-28-2004, 03:21 AM
Originally posted by Jan Daugaard
Hi Guido,

there are red, green, and blue curves for the frequency response. Do they reflect measurements at different angles?

Regards
Jan D.

Hi Jan,

no I did 3 measurements all under same circumstances. What we see is tolereance of equipment.

BTW and as requested:
I use an amazing tool called hifish! www.hifish.de
Level between horizontal lines is 5 dB.

Guido
01-28-2004, 03:26 AM
Here is the User Manual

http://www.hifish.de/cgi-local/byteserver.pl/Downloads/Anleitung%20AC%20englisch.pdf

Ralf
01-28-2004, 04:05 AM
Originally posted by Guido
Hi Forum!

Yesterday I measured the response of a brandnew 2426H on a brandnew 2344A. This stuff is for Ralfs DIY 4430's.

To protect the Driver I connected it via a 12dB xover with 1500Hz highpass (from a MR805).
No Horn EQ as far as I know.

See what I got. The 2426H looks quite good at high frequency.

So my question is:
Has the 2426 a better high frequency response than the 2425?
JBL states "2", slightly different, usually improved.

Can you help?

Do you got an other result for the 2425H?

Guido
01-28-2004, 04:11 AM
Originally posted by Ralf
Do you got an other result for the 2425H?

Where should I get a 2425H from?

I own 2pcs. 2416H

Maybe we should measure YOUR 2425H on thursday?:yes:

Ralf
01-28-2004, 04:31 AM
Originally posted by Guido
Where should I get a 2425H from?

I own 2pcs. 2416H

Maybe we should measure YOUR 2425H on thursday?:yes:

That`s why I wondered...

I have the 2425J in my system...

But the result should be the same.

Ralf
01-28-2004, 04:34 AM
Originally posted by Guido
Where should I get a 2425H from?

I own 2pcs. 2416H

Maybe we should measure YOUR 2425H on thursday?:yes:

But we could make a messurement of the 2426H with the network of the 4430...that would interest me

So don`t forget the parts at home...

Greetings
Ralf

Ralf
01-28-2004, 04:36 AM
Originally posted by Ralf
That`s why I wondered...

I have the 2425J in my system...

But the result should be the same.

Or the 2426J? I`m not shure now....