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AlexanderS
09-27-2005, 04:53 AM
Hi,

Could anyone please comment on JBL LE5-2 driver dust central cap form (that driver which was used in century L100 monitors):

Should be the dust central cap be convex outside or hollow inside? And if I got ones which have hollowed inside caps does it mean the dust cap was pushed, so the cone was damaged?

These pictures look different, even that the first cap looks like new.

inside: http://cgi.ebay.com/PAIR-LE5-2-ALNICO-JBL-MIDRANGE-SPEAKERS-L-100-L100-4310_W0QQitemZ5811670133QQcategoryZ50597QQssPageNa meZWDVWQQrdZ1QQcmdZViewItem

outside: http://cgi.ebay.com/JBL-L100-L-100-LE5-2-LE-5-2-Single-Midrange-Speaker_W0QQitemZ5786690521QQcategoryZ50597QQssPag eNameZWD1VQQrdZ1QQcmdZViewItem

Alexander

AlexanderS
09-27-2005, 05:32 AM
Oh, I found the answer bu myself

http://www.audioasylum.com/forums/hug/messages/46419.html

duaneage
09-27-2005, 08:11 PM
Rumor is that inverted felt dustcovers sound best and have flattest response. Emprical testing revealed that hard plastic domes are the worst with rising response around 8 Khz.

In the case of the LE 5-2 I also saw somewhere that different wire was used in the voice coil, some were copper and some were aluminum. others on the forum might know.

I have a pair of LE 5-2s i am thinking of selling, The recent runup on eBay in pricing is truly remarkable

Earl K
09-28-2005, 04:58 AM
- Well, everyone who uses this 5" midrange should read the le5 Matrix Thread (http://audioheritage.csdco.com/vbulletin/showthread.php?t=5706) .

- It offers definative information .

- I've never liked metal or plastic dustcaps myself / but / I don't have an opinion on how that might translate into choosing a 5" midrange .

<> EarlK

Lancer
09-28-2005, 06:01 AM
Rumor is that inverted felt dustcovers sound best and have flattest response.:barf: I'm so glad JBL went to the more expensive black painted aluminum center domes in the later LE5's.

The LE5-2 really was "pretty bad". A period piece for sure. One engineer at JBL stated that they were pleasantly surprised how the transducer "cleaned up" when they went from alnico to ferrite.

We won't go into how any of them sound next to the current generation JBL's. ;)