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hmolwitz
09-14-2008, 08:08 PM
I have a 2268HPL which I purchased in need of a recone. I do not see listed on the JBL site T/S for this driver, but they list the cone as the same as the 2268H. That would indicate to me that it should perform identically to that driver? Is it possible to recone this as a G, or are there variations in the magnet structure that would make that unwise? Or even more interesting to me would be reconing as a 2269G.
Any insight would be appreciated, especially from Giskard,
Thanks
Harry

Doc Mark
09-14-2008, 08:20 PM
Evening, Harry,

Though I'm certainly not an expert, I asked something similar the other day. I have a 2242HPL, and asked is there was a difference between that and the 2242H? I was told that the one I had came without the "tire" on the ferrite magnet, hence the slightly different designation. Your driver may well be the same story. Hopefully, one in the know will come along soon, and either support that thought, or not. I'm thinking it might be right, however, based upon my own experience. Take care, and God Bless!

Every Good Wish,
Doc

Jan Daugaard
09-15-2008, 01:13 AM
Out of curiosity: How come the 2268HPL is in need of a recone? It can't be more than 4 years old.

hmolwitz
09-15-2008, 05:07 PM
I did not get a story, but I am assuming overexcursion due to abuse. the VC is locked up, and moves only reluctantly.
There is no tire, but I do not think they have a tire for the Neo drivers?

Harry

hmolwitz
10-24-2008, 12:20 PM
Talked to the nice folks over@JBL today, an Everett Watts:applaud: who explained that yes the HPL is the no rubber tire model, and it is an H really and could be reconed as a "G" but JBL wouldn't do it(Policy) and did not recommend reconing as an FF, but gave no rationale(but I did not ask either).
Best
Harry

OC Speaker
10-27-2008, 10:45 AM
Talked to the nice folks over@JBL today, an Everett Watts:applaud: who explained that yes the HPL is the no rubber tire model, and it is an H really and could be reconed as a "G" but JBL wouldn't do it(Policy) and did not recommend reconing as an FF, but gave no rationale(but I did not ask either).
Best
Harry

Harry,

The "FF" version is the dual voice coil model which is used in the VRX918SP, so it is not interchangeable with the other two. But the H and G (or HPL and GPL, 8 ohm and 4 ohm respectively) kits are interchangeable.

Best Regards,
Eric Sunda
Orange County Speaker, Inc.
World Distributor for GLS Audio
800-897-8373 M-F 9am - 5pm Pacific Time
http://www.SpeakerRepair.com/

mikebake
10-27-2008, 11:01 AM
Harry,

The "FF" version is the dual voice coil model which is used in the VRX918SP, so it is not interchangeable with the other two. But the H and G (or HPL and GPL, 8 ohm and 4 ohm respectively) kits are interchangeable.

Best Regards,
Eric Sunda
Orange County Speaker, Inc.
World Distributor for GLS Audio
800-897-8373 M-F 9am - 5pm Pacific Time
http://www.SpeakerRepair.com/

Any source to look at the differences between 268 (new Eon sub) and 2268?
Thanks

Oldmics
10-27-2008, 01:01 PM
Originally Posted by OC Speaker http://audioheritage.org/vbulletin/images/buttons/viewpost.gif (http://audioheritage.org/vbulletin/showthread.php?p=225430#post225430)
Harry,

The "FF" version is the dual voice coil model which is used in the VRX918SP, so it is not interchangeable with the other two. But the H and G (or HPL and GPL, 8 ohm and 4 ohm respectively) kits are interchangeable.

Best Regards,
Eric Sunda
Orange County Speaker, Inc.
World Distributor for GLS Audio
800-897-8373 M-F 9am - 5pm Pacific Time
http://www.SpeakerRepair.com/ (http://www.SpeakerRepair.com/)




All of the above discussed speakers are dual coils and the FF is a 2 ohm coil.
Oldmics

Comparisons-good luck :banghead:

OC Speaker
10-27-2008, 01:18 PM
Originally Posted by OC Speaker http://audioheritage.org/vbulletin/images/buttons/viewpost.gif (http://audioheritage.org/vbulletin/showthread.php?p=225430#post225430)
Harry,

The "FF" version is the dual voice coil model which is used in the VRX918SP, so it is not interchangeable with the other two. But the H and G (or HPL and GPL, 8 ohm and 4 ohm respectively) kits are interchangeable.

Best Regards,
Eric Sunda
Orange County Speaker, Inc.
World Distributor for GLS Audio
800-897-8373 M-F 9am - 5pm Pacific Time
http://www.SpeakerRepair.com/ (http://www.SpeakerRepair.com/)




All of the above discussed speakers are dual coils and the FF is a 2 ohm coil.
Oldmics

Comparisons-good luck :banghead:

This is incorrect. The H/HPL and G/GPL are single coil, and the FF is dual coil. The FF is 2 ohm per coil though, as said.

http://www.jblproservice.com/pdf/VRX%20Series/VRX918S.pdf
http://www.jblproservice.com/pdf/VP%20Series/VPSB7118DPANCN.pdf
http://www.jblproservice.com/pdf/VRX%20Series/VRX918SP.pdf

Best Regards,
Eric Sunda
Orange County Speaker, Inc.
World Distributor for GLS Audio
800-897-8373 M-F 9am - 5pm Pacific Time
http://www.SpeakerRepair.com/

Oldmics
10-27-2008, 02:10 PM
Eric

I will look at the links provided but heres the real deal.

I just looked at the links and all the speakers are listed as differential drive technology.(Dual coil)

Hope this helps.

Robh3606
10-27-2008, 02:18 PM
All of the Differential drive motors have two coils with a braking coil between. That's the basic configuration of the DD motors. Normally these two coils are connected and are not independent.

Rob:)

OC Speaker
10-27-2008, 02:28 PM
Eric

I will look at the links provided but heres the real deal.

I just looked at the links and all the speakers are listed as differential drive technology.(Dual coil)

Hope this helps.

I think we just have a difference in terminology. Yes, there are two voice coils on the former on the H and G. However, as Rob said, they are not independent of each other. While the FF model is a true "dual voice coil" design with 2 separate terminals (+ and - for each) on the speaker. In my original post, this is what I was referring to.

Take care,
Eric

Oldmics
10-27-2008, 02:46 PM
I see your point Eric.

There is reference to dual coil in both the 2268FF and the 2268G devices description in the JBL links that you provided.

So JBL refers to both devices as dual coil.

Perhaps a clearer terminology of the independently wound and individually terminated 2268 FF should be considered.

I guess we both learned something new today. :bouncy:

Oldmics

mikebake
10-27-2008, 03:43 PM
And so now, where do we turn to get the skinny on the 268G, 2268, adn the 2269?

4313B
10-28-2008, 06:45 AM
Hope this helps.This won't affect the sound right?

4313B
10-28-2008, 06:52 AM
I have a 2268HPL which I purchased in need of a recone. I do not see listed on the JBL site T/S for this driver, but they list the cone as the same as the 2268H. That would indicate to me that it should perform identically to that driver?I put the 2268H in the Technical Reference section a couple years ago.

I'll try to post the others at some point.

mikebake
10-28-2008, 12:45 PM
I put the 2268H in the Technical Reference section a couple years ago.

I'll try to post the others at some point.
I didn't think to look there. Thanks. Getting the others would be great.

4313B
10-28-2008, 03:21 PM
I didn't think to look there. Thanks. Getting the others would be great.I'll post the 2269H later tonight or tomorrow.

As mentioned, the 2268 is a dual 3" coil. H means 8 ohms, G means 4 ohms and F means 2 ohms; FF means two 2 ohm coils brought out separately.

The 2269 is a dual 4" coil.

The 268 is a dual 2" coil and the EDS may not be available yet. Don, Steve and I saw it while we were there but were asked not to photograph or mention it. It weighs about 5 or 6 pounds.

mikebake
10-28-2008, 05:07 PM
I'll post the 2269H later tonight or tomorrow.

As mentioned, the 2268 is a dual 3" coil. H means 8 ohms, G means 4 ohms and F means 2 ohms; FF means two 2 ohm coils brought out separately.

The 2269 is a dual 4" coil.

The 268 is a dual 2" coil and the EDS may not be available yet. Don, Steve and I saw it while we were there but were asked not to photograph or mention it. It weighs about 5 or 6 pounds.
Ah, okay, I get it. i see the corollary to previous models with the coil sizes; 2269= beast.
The 2268H tech sheet says it is the neo replacement for the 2241. That makes complete sense, and may help Scott figure it's place in the world. If waht I've bought is kind of a neo 2241, I'm happy. They are really quite impressive in SR. I did a day of about 6 live acts 2 weeks ago and each band commented repeatedly on the JBL's. The 2268 is just robust and smooth.

4313B
10-28-2008, 05:37 PM
Ah, okay, I get it. i see the corollary to previous models with the coil sizes; 2269= beast.Yes. The 2269 is an improved 2245. The reason that it doesn't have as low an Fs as the old 2245 is because JBL had to significantly beef up the suspension to keep it from shredding itself. This resulted in a higher Fs, but JBL doesn't use it much below ~ 28 Hz anyway so not a problem. It is considerably more linear than the old 2245 and, like the 2245, is considered a true subwoofer transducer.
The 2268H tech sheet says it is the neo replacement for the 2241.Right, the 2268 is an improved 2241.

The special FF model was designed to work with the 400W Crown class D amps. It is much cheaper (and lighter) to build two 400W amps than a single 800W amp so that is the reason for the two VC inputs.


The 268 is designed for the Eon Series and is roughly like an old 2042. It has a lighter moving mass. The EDS should be available in another month or so and I'll try to post it then.


As I posted in another thread, the 2242H with its higher Bl is designed to work in arrays while the 2245H and 2269H are designed for single use, dual use at most.

In summary, JBL has two basic types of eighteens; Higher Bl versions such as the 2242H intended for arrays benefiting from mutual coupling and those like the 2245H intended for single use.

mikebake
10-29-2008, 06:04 AM
As I posted in another thread, the 2242H with its higher Bl is designed to work in arrays while the 2245H and 2269H are designed for single use, dual use at most.

In summary, JBL has two basic types of eighteens; Higher Bl versions such as the 2242H intended for arrays benefiting from mutual coupling and those like the 2245H intended for single use.
So where would the 2268H fit in?

4313B
10-29-2008, 07:23 AM
The applications JBL uses it in.

mikebake
10-29-2008, 01:47 PM
I guess that would put it in the single/dual use category.

4313B
10-29-2008, 01:54 PM
I don't know, it was Doug's summary. I don't use them myself. :dont-know He kindly weighed in on the questions posed.

hmolwitz
11-04-2008, 06:17 PM
Thanks for all the info everyone.
I did finally find the engineering data sheet here. (http://audioheritage.org/vbulletin/showthread.php?t=11346)
I dunno why I did not see it at first, perhaps if they were ordered numerically?
Thanks Giskard, I love those engineering data sheets.
Harry

Jan Daugaard
11-05-2008, 08:06 AM
It would be nice to have the EDS for the 2265H as well.

Whereas the 2268H has a Vas of 328 liters, the 2265H has a Vas of 176 liters. It would thus appear that they are intended for different purposes.