JBL E120 Help...

Re: JBL E120 Help...

Postby hippieguy1954 » Sun Apr 01, 2012 12:03 pm

eric wrote:Thanks for the clarification! That's it hippie...buncha wankers over there on TGP!!!


You're welcome, eric. My pleasure anytime! :smile: :smile: :smile:
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Re: JBL E120 Help...

Postby barefootdave » Fri Apr 13, 2012 6:51 am

Woo hoo! Just scored these for $150 each on the bay with a 14 day money back guarantee. Seller says they are all original.

Now I am not quite sure how to check them out when they arrive next week to make sure they are all good. I will only have about 48 hrs at home between business trips to do the QC on them.

Do I just hook them up and play through them or is there more diligence to do?

:-)
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Re: JBL E120 Help...

Postby barefootdave » Fri Apr 13, 2012 6:53 am

Forgot to put the link

[ebayitem]http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=261000752946&ssPageName=ADME:B:BOC:US:1123[/ebayitem]
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Re: JBL E120 Help...

Postby hippieguy1954 » Fri Apr 13, 2012 7:24 am

I would check for "spreaker rub". If there is speaker rub, you will hear it after you install them. Makes a distorted type sound.

But you can (if you are careful) gently push the cone in just slightly..it will return on its own...(with all of your fingers on one hand spread and evenly spaced) and listen for any rubbing before you install them.

Besides that you're good to go unless you see something unusual.
:smile: :smile: :smile:
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Re: JBL E120 Help...

Postby TI4-1009 » Tue Apr 24, 2012 11:39 am

Never hurts to put the ohmeter across the posts to make sure it's normal on resistance.
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Re: JBL E120 Help...

Postby hippieguy1954 » Tue Apr 24, 2012 12:07 pm

TI4-1009 wrote:Never hurts to put the ohmeter across the posts to make sure it's normal on resistance.


+1 Good point! :smile: :smile: :smile:
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Re: JBL E120 Help...

Postby tjvhaiko » Wed May 09, 2012 7:28 am

In response to super glue post: Do NOT EVER use super glue on a dustcap!!!! You will destroy an expensive speaker, and E-120's are a finite bunch. I replaced aluminum dustcaps on JBL E-140's using "rubber resin cement" designed specifically for it, IT WORKS GREAT!!!! I was told it is the same stuff JBL uses, but who knows. Just do a search for it. The part number on the bottle is RS-3087. Don't know who makes it, but it IS what you need. Think I got a tube at a place called sound speaker repair.
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Re: JBL E120 Help...

Postby hawk900 » Fri Aug 03, 2012 4:59 am

That makes complete sense. rubber resin can handle the constant flex of the cone. Igrabbed two more E's(total of three) and 3 more K's.
Check out the E''s never reconed but cones looks good.

Here's the add for the E's which I plan on fireing up all four with mc2300 and 3K's which I plan on firing up 3 K's with my mc2100

http://cgi.ebay.ca/ws/eBayISAPI.dll?Vie ... 600wt_1397

Let me know your all opinions. I hate internet purchases. Tip#1 for this forum= if cone dont spring back spoothly and resistance measurement. What's are the min's and lows in ohms????
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Re: JBL E120 Help...

Postby DenverEd » Fri Aug 03, 2012 10:32 am

I am looking at these:

http://denver.craigslist.org/msg/3156477750.html

Any help/guidance would be greatly appreciated.
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Re: JBL E120 Help...

Postby mijknahs » Fri Aug 03, 2012 11:45 am

DenverEd wrote:I am looking at these:

http://denver.craigslist.org/msg/3156477750.html

Any help/guidance would be greatly appreciated.


If you can test them by having the guy crank some music through them pretty loud, that would be best. They look like they're in pretty good shape.
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Re: JBL E120 Help...

Postby jerrys.kids » Wed Aug 08, 2012 9:55 am

One important thing to do when you're looking at one before buying is to gently push the cone in and out, and listen for any rubbing sounds. If it's rubbing, it's the voice coil and it's toast. If it doesn't move in and out easily, or if it sticks, the magnet's been jarred out of alignment, and it's also toast. They are so expensive to recone you want to be very careful.

How much should the cone move in and out?
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