4313B questions

[tweeter]

Well, I did it.
The foam has been unstuck without problems thanks to a special contact cement thinner. The trick is to wait the time necessary for impregnation.
The only issue, as it was previsible, is some stains in the carton cones.
Now the question is what can I use to hide the stains, as paint, aquaplas, olive oil, etc... I don´t know.
I´ll appreciate any sugestion....

[Audiobeer]

Couldn't you just saturate a rag with the same solvent and wipe down the cone lightly?

[grumpy]

I'm impressed, regardless of the minor staining. Nice job.

[LRBacon]

Looks like a very nice job to me, too.

Do you have the new surrounds yet?

Larry

[badman]

Well, I did it.
The foam has been unstuck without problems thanks to a special contact cement thinner. The trick is to wait the time necessary for impregnation.
The only issue, as it was previsible, is some stains in the carton cones.
Now the question is what can I use to hide the stains, as paint, aquaplas, olive oil, etc... I don´t know.
I´ll appreciate any sugestion....

Very nice. I'd suggest that in addition to working outdoors, you utilize a fan to remove the VOCs as quickly as possible so as not to affect other glues in the structure.

[tweeter]

Sorry, but what is "VOCs"? :dont-know
I´ve just ordered the surrounds to Rick.
I´m thinking to cover the cartons with something but.........what?

[BMWCCA]

Sorry, but what is "VOCs"? :dont-know

Volatile Organic Compounds: chemical vapors
http://en.wikipedia.org/wiki/Volatile_organic_compound

[tweeter]

Thanks BMWCCA for the advise.
Now, for refreshing the cones I need something like this.
Does anyone know what product is it?

[LRBacon]

It looks like a Japanese product from the pics you posted. I did search using "hosoken007" and what comes up are what appears to be Japanese sites.

Larry

[tweeter]

Yes, you are in true.
http://jbl43.com/
They ship overseas but the order form is only in japanese
I´ve just e-mailed them and waiting response.

[tweeter]

Well, I´ve just received the package directly from Japan.
I´ll post pics when the work has been done.

[macaroonie]

There have been periodic questions about this , I hope you can give us a detailed description. What is the magic formula etc
Mac

[tweeter]

Sure, let me some time......

[tweeter]

Hi,
I have a problem with one woofer.
The cone is down and the voice coil seems to be trapped into de gap.
When I push down the cone there is no movement.
When I pull out the cone, it goes out with difficult and goes down quickly.
What should I do to solve this issue?.

[hjames]

Hi,
I have a problem with one woofer.
The cone is down and the voice coil seems to be trapped into de gap.
When I push down the cone there is no movement.
When I pull out the cone, it goes out with difficult and goes down quickly.
What should I do to solve this issue?.

Its quite possible the woofer was driven hard, the "shellac" around the voice coil melted and bubbled up, and is now binding in the gap.

Generally that deserves a recone - JBL shop takes the old cone off- cleans all the gunk out of the gap, and puts a new speaker cone into place, with fresh spider and voice coil.