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Wow those are really old! Nice speakers!

Rob:)

Look at the data sheet. Response drops like a stone from 10K

Rob :)

That the there is a throat mismatch to the horn. They use mylar like the 2435/2431 435Be 435Al

Rob:)

I don't see the worry. What media are you using?? If it's CD anything above 20K is a moot point!

Rob:)

Do a search Mark Gander


https://www.stereophile.com/features/105kh/index.html

Rob:)

When I built my Be Arrays I used the 045Be and it was in the upper 90's as far as sensitivity. I had to pad it down to meet the LE-14H-3 so it is definitely not 87Db. That documents seems a bit...

You should be able to just swap the caps.

Rob:)

12db slopes with level attenuation.

Rob:)

Hello Greg

This is a 6 year old thread surprised you are responding to it now as you just brought this back into the frey. Glad you are doing well through this nightmare.

Here are a couple of...

The E-145's are 98Db 1 meter. I use them in my HT mains.

http://www.audioheritage.org/vbulletin/showthread.php?10655-E145-8-150-4H


...

I think either a K or E145 would be the closest function wise.

Rob:)

Rick Cobb yes I would too!

Rob:)

Those are the front mounted gaskets but drivers are rarely mounted that way. Used to be cork back in the day. You should be able to get replacements for a 12" driver but they probably won't match...

Here we go again. Take a simple 2 way and spring for the extra caps. Have a listen and decide for yourself.

Rob:)
...

I have a pair of 590's as well. Sound fine to me.

Rob:)

You can get the 2435 diaphragms from several places. These are not aguaplased but are otherwise identical. What happened to the original??

Rob:)

Hello Ivica

Thanks for posting that.

Something is not right?? We must be measuring under different conditions. I don't show any significant roll off until about 700Hz. I got the same...

Hello Ivica

Why do you think the loading is not good below 1200Hz with the M2 horn?? I had no problem at all crossing at 700Hz 18db electrical slopes. Above 10K the M2 has directivity issues just...

Yes this is a bit odd. I actually used Le14A's as subs in 4 cubic ft boxes for years and the had plenty of kick. I still have them and they work just fine. Can you check the woofers for free air...

In case you have not seen this it's a good reference. Might give some ideas and there is quite a bit of good info that you may find useful.
...

If you look at the schematic the 476Mg runs all the way out no low pass. I use them in my passive M2 and they run out past 22k and they are very clean looking on a waterfall. No hint of break-up you...

Took long enough! Finally got the 2453SL's integrated into my HT mains. They sound really good! Glad I made the change.

Rob:)

What condition is the passive radiator the PR15C. You should also have foam surrounds on them as well. If you take the passives out there should be disks on the center to add weight and lower the...

Take a look at this

https://www.audiosciencereview.com/forum/index.php?threads/jbl-m2-audiolense-digital-crossovers-w-subs.2369/

Rob:)

It's all here

https://jblpro.com/en/products/sub18


Rob:)