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Discussion Starter · #7 ·
I really need to take some measurements before and after as well as swaping in the 2352 horns. I'm not real proficient with measurements. I guess it's all abot practice and trial. If nothing else, I'm sure the CD's will benefit from new phragms. Heck the originals are probably 10 years old. That's a lot of abuse. Most of these JBL drivers were used in pro sound so I'm sure (like my 2242's) were ridden hard.

I'm really curious to see if James would prefer the Radian aluminum phragms over the original Ti. I sold mine or I'd send 'em to you.
 

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Discussion Starter · #12 ·
I will take some measurements. If I really get ambitious, I will compare all of the CD's I have including:
2430 (original Al for 4622HF), 2431 (Al), 2447 (Ti), 2450SL, 2447 with SL phragm. And I have the 2352, and 2380 horns.


I spent the last two days building/rebuilding my subs. With the help from gpmbc, I decided to replace the 2x2242's with EV-X180B's. I also put the TD18h+ in a 5 cu ft sealed enclosure. I had 2 MJ18's left around, so I put those in an IB manifold in the back of the room. Wow, the bass is now over the top. Not as "in your face" as before. It's just everywhere. So, crazy as it sounds, I have a tapped horn sub (DTS-10), huge ported sub (20 cu ft), sealed sub and an IB. Yikes.
 

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I will take some measurements. If I really get ambitious, I will compare all of the CD's I have including:
2430 (original Al for 4622HF), 2431 (Al), 2447 (Ti), 2450SL, 2447 with SL phragm. And I have the 2352, and 2380 horns.


I spent the last two days building/rebuilding my subs. With the help from gpmbc, I decided to replace the 2x2242's with EV-X180B's. I also put the TD18h+ in a 5 cu ft sealed enclosure. I had 2 MJ18's left around, so I put those in an IB manifold in the back of the room. Wow, the bass is now over the top. Not as "in your face" as before. It's just everywhere. So, crazy as it sounds, I have a tapped horn sub (DTS-10), huge ported sub (20 cu ft), sealed sub and an IB. Yikes.
 

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I will take some measurements. If I really get ambitious, I will compare all of the CD's I have including:
2430 (original Al for 4622HF), 2431 (Al), 2447 (Ti), 2450SL, 2447 with SL phragm. And I have the 2352, and 2380 horns.


I spent the last two days building/rebuilding my subs. With the help from gpmbc, I decided to replace the 2x2242's with EV-X180B's. I also put the TD18h+ in a 5 cu ft sealed enclosure. I had 2 MJ18's left around, so I put those in an IB manifold in the back of the room. Wow, the bass is now over the top. Not as "in your face" as before. It's just everywhere. So, crazy as it sounds, I have a tapped horn sub (DTS-10), huge ported sub (20 cu ft), sealed sub and an IB. Yikes.
Were you ever able to complete these measurements? I'm mostly interested in the 2447 compared to the 2450sl diaphragms.
 
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