Here they are:
Here they are:
Note that JBL used to smooth out all their earlier published response curves. The 2235 curve literally doesn't deviate more than + or - 2db from the 2231 curve in the high end. I just think they may have decided to forego smoothing by the time the published the 2235 curves...
John
I've never heard that before.Originally Posted by herve M
Good luck with that then. Those kits have been gone for decades. You must be listening to 2231's with shot spiders and degaussed motors. I suppose some people could grow accustomed to such.
I thought perhaps someone had run across the real 2231 curve. I'll see if I can find one and then I'll post both curves.
Giskard. You are as always a perfectionist.
Yeah, I should be shot and put out of my misery. Life is too messy and imperfect. Totally overated. Ick!Giskard. You are as always a perfectionist.
Well, except for the girls gone wild part. That part is pretty damn fun to witness.
Well, I do not think so. Even you have your good sides.
What would you do without it? (life).Life is too messy and imperfect. Totally overated. Ick!
Make me believe it!Well, except for the girls gone wild part. That part is pretty damn fun to witness.
Yeah, no doubt those published curves are irrelevant. There's probably something wrong with my setup. I'll try and look into it and see I if I can figure something out, and I'll get back to you all if I come up with something.
Regards,
David
Why not put a 2231 in one cab and a 2235 in the other and listen to the mids? If you're set up for bi-amping, shut off the horn to really hear the differance.
I suspect the 2231 might have slightly more upper mids, while the 2235 might have slightly stronger low end. If find that you prefer the 2231s in the 4333s, then stick with the originally speced speakers. There are 2231s out there with the original cones.
Tom
Well shoot. The 2231H curve no longer exists. Here's the 2235H curve.
I guess you guys will just have to run curves on both drivers and then see where the network needs to be adjusted to your requirements. I always found the 2235H to be an improved bolt-in in the L300/4331/4333.
The 2231 was flat to about 1000 Hz but then had a giant peak at 1500 Hz which doesn't work well with the crossover.
Dave,
- This has been said before / but I'll restate it .
- I'd tinker about with your networks Zobel. Heck, it's only a cap and a single resistor. The two woofers needed different Zobels / when crossed at the same frequency ( it's all there in the available schematics ).
- Too bad I'm not local to you. I'd loan you my single 2235/E130 hybrid to see if it's midrange response is more to your liking. Didn't Zilch say he was getting a pair of those made up ( sometime ago ) ?
What would I do, check the inductance of the 2235 voice coil and build a zoebel to make it zero phase? I mean no reactance.
Yeh, you could do all that & more for the sake of accuracy . The David Weems book can walk you through that process quite well .
Alternately; just find an existing schematic that uses the 2235H (plus has a Zobel along with the same crossover point as the 4333 ) . Then swap in this 2235 specific Zobel for the 2231 specific Zoebel .
- Disconnecting the existing Zobel , is always another option / though the results become a crap shoot .
Very likely.
JBL uses those conjugates to trim the filters.
Hold on a second. Maybe I am a relative JBL newbie here BUT, wasn't the Zoebel there to curtail sub 100 Hz impedance issues? Is Zoebal relevant here?
Whatever a Z . . . b . . . l is or does we now have three different ways of spelling it.
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