"Meat Plow" wrote in message
...
On Fri, 9 Jul 2010 01:45:22 +0100, "Arfa Daily"
wrote:



"Meat Plow" wrote in message
...
On Thu, 08 Jul 2010 20:48:38 +0100, Ron
wrote:

On 08/07/2010 20:15, root wrote:
Meat wrote:

Seek out a professional reconing shop. You need some specialized
tools
of the trade and some talent to recone. My good friend did it for a
living until he passed away recently. He would advise the same even
if
you didn't chose his service.

You can buy kits for reconing speakers. It isn't a
hard job. You remove the flex outer rim from the
cone. Then you cut out the bulge covering the voice
coil and put shims (supplied with the kit) in to center
the cone. Then you glue new flex material around
the cone, and wait overnight. Then you remove the
shims and seal up the bulge with glue.

Apart from the overnight wait for glue to dry, it
only took me about half an hour the first time.
With practice I might be able to get it down to
10 minutes.

And that takes care of the knackered voice coil does it?

Ron(UK)

The 10 minute recone part really bothers me. Sure with production line
jigs, shims, guides and people who do maybe a 100 per day that is a
tangible goal. But for an average Joe buying reconing parts and being
successful is not the average outcome. Sure there are exceptions so if
you want to try it on your own good luck.


Interestingly, I was discussing exactly this issue with the owner of the
music shop that I do a lot of work for, just this week. He rents a lot of
biiiiigggg PA equipment out - kilowatt amps and 4 x 15 bass cabs and
such.
These get damaged by inept users all the time, apparently. I suggested
that
it must cost him a fortune in replacement speakers, but he said "Oh no - I
just re-cone them". I asked him how long he had been doing this and he
said
years, but I had never seen this going on in his shop. Anyway, I asked him
how long it took, and how hard a job it was, and did he have lots of
specialist shims and feeler gauges and jigs and what have you. Nope, he
said. He reckons it takes him but a few minutes (literally) to do the job.
He says that the most time consuming part is making sure that all the crud
from the burnt up voice coil, is removed from the airgap. He uses a
combination of compressed air, and sticky tape to do this. As to centering
the new cone's voice coil, he says that most replacement kits come with a
set of four plastic spacer shims, but that many modern designs are
fundamentally self - centering anyway. He reckoned that it was basically a
piece of **** job that just needed a little care, and that much ********
was
talked on the subject. I might ask him to let me know next time he's got
one
to do, as I would like to watch him at work ...

Arfa

I've been around when my buddy Bart reconed some pro-audio speakers.
It all comes down to people doing it the way they have learned. It's
not as easy as you think but it isn't hard either. He chose to buy
specific tools and glues and treatments not relying on kits for shims
and glues. He knew what he was doing and reconed all my speakers.
Never had a re-run because of a botched repair. Hey if you can learn
the essentials and want to give reconing a try go for it. Maybe it's
for you maybe it's not.

I don't reckon I've got the patience, Meat. I had always thought that it was
quite a tricky and skilled job, so I was just interested to have a watch
next time Dunc does one, as he reckoned it was so straightforward !

Arfa