Hi All,
I have a pair of JBL L1 speakers and I would like to "refresh" their 035TIA tweeter's dampers.
I've been reading and watched few videos about how to do it but got confused.....
as mentionined on some websites (and in here) there are 2 different dampers in each tweeter, 1 is 6mm in diameter and 3mm high and made of rubber or hard foam, the other one is about 20-22mm in diameter and 10mm high made of very soft foam.
Now some sources mentioned that the smaller (6mmx3mm) should be placed on top of the pole piece, just below the larger damper and the larger, softer 20mm dia damper should be placed on top of the smaller damper and "push" the tweeter dome from below, so bassicaly the smaller damper gives the larger damper a "boost".(drawing 1)
Other sources mentiond that the lager damper should be placed on top of the pole piece and the smaller damper should be placed on top of the larger one so the smaller damper is "pushing" the tweeter dome from below.(drawing 2).
I see no sense in placing a smaller damper below the larger damper to give it a "boost" because if so why JBL didn't make a 13mm high damper from the first place? what's the reason for "complicating" things with 2 dampers?
What is the benefit of using a smaller in diameter and harder material damper below a soft larger damper?
My common sense say's that the larger damper should be placed on top of the pole piece (and cover the whole pole piece top surface for more stable base) and the smaller damper needs to be placed on top of the larger damper so the larger damper acts as a spring to the smaller damper and the smaller damper will touch only a specifiec point at the center of the back of the dome (drawing 2) .....maybe I'm wrong but that's my common sense.
I'll appreciate if someone that has a definite answer for what is the right way to do it and done that before will share his knowledge.
Thanks
I have a pair of JBL L1 speakers and I would like to "refresh" their 035TIA tweeter's dampers.
I've been reading and watched few videos about how to do it but got confused.....
as mentionined on some websites (and in here) there are 2 different dampers in each tweeter, 1 is 6mm in diameter and 3mm high and made of rubber or hard foam, the other one is about 20-22mm in diameter and 10mm high made of very soft foam.
Now some sources mentioned that the smaller (6mmx3mm) should be placed on top of the pole piece, just below the larger damper and the larger, softer 20mm dia damper should be placed on top of the smaller damper and "push" the tweeter dome from below, so bassicaly the smaller damper gives the larger damper a "boost".(drawing 1)
Other sources mentiond that the lager damper should be placed on top of the pole piece and the smaller damper should be placed on top of the larger one so the smaller damper is "pushing" the tweeter dome from below.(drawing 2).
I see no sense in placing a smaller damper below the larger damper to give it a "boost" because if so why JBL didn't make a 13mm high damper from the first place? what's the reason for "complicating" things with 2 dampers?
What is the benefit of using a smaller in diameter and harder material damper below a soft larger damper?
My common sense say's that the larger damper should be placed on top of the pole piece (and cover the whole pole piece top surface for more stable base) and the smaller damper needs to be placed on top of the larger damper so the larger damper acts as a spring to the smaller damper and the smaller damper will touch only a specifiec point at the center of the back of the dome (drawing 2) .....maybe I'm wrong but that's my common sense.
I'll appreciate if someone that has a definite answer for what is the right way to do it and done that before will share his knowledge.
Thanks
