DIY 2405 refurb

[Wardsweb]

These showed up today a little worn and tired. I will post more pics and details later but wanted to give you a quick before and after for now.

http://wardsweb.org/audio/JBL_2405/2405a.jpg

[Wardsweb]

Here is the after: sanded, painted, and polished.

http://wardsweb.org/audio/JBL_2405/2405n.jpg

[maxwedge]

Nice Job! Did you fill in the nick in the one on the left?

[Wardsweb]

Nice Job! Did you fill in the nick in the one on the left?
Yes, waiting for the JB Weld to setup so I can file and sand it smooth. It will be covered in the expanded documentation.

[Altec Best]

I always Love to see drivers/speakers come back from the brink ! ;) Do you have new JBl diaghrams for them.Wake them right up from that sleepy state. :p

Nice Job !

[more10]

Very nice work! Please inform on which paint you used.

[Wardsweb]

So begins the 2405 reburbishment with their arrival.

http://wardsweb.org/audio/JBL_2405/2405a.jpg

[Wardsweb]

Next, take them apart.

http://wardsweb.org/audio/JBL_2405/2405b.jpg

[Wardsweb]

One had been punched through, like so many I've seen.

http://wardsweb.org/audio/JBL_2405/2405c.jpg

[Wardsweb]

So pull out the heat gun, remove the foilcal and make a clean hole with a hole punch.

http://wardsweb.org/audio/JBL_2405/2405d.jpg

[Wardsweb]

Reapply the foilcal and a much cleaner look.

http://wardsweb.org/audio/JBL_2405/2405e.jpg

[Wardsweb]

One of the mounting brackets was broken.

http://wardsweb.org/audio/JBL_2405/2405f.jpg

[Wardsweb]

Fill the break with JB Weld and clamp it in place to set.

http://wardsweb.org/audio/JBL_2405/2405g.jpg

[Wardsweb]

I started with some 180 grit on a flat surface. In this case, a piece of 1/4" glass I have to sand the face smooth and flat.

http://wardsweb.org/audio/JBL_2405/2405h.jpg

[Wardsweb]

A piece wrapped around to break the surface and remove some of the paint. You can see the original machining marks. You don't have to sand this perfectly smooth.

http://wardsweb.org/audio/JBL_2405/2405i.jpg

[Wardsweb]

180 sanded and ready for some 320 but first I need to fix the chip on one of these.

http://wardsweb.org/audio/JBL_2405/2405j.jpg

[Wardsweb]

A little more JB Weld to fill the depression.

http://wardsweb.org/audio/JBL_2405/2405k.jpg

[Wardsweb]

Once the JB Weld was set, it was sanded and I apply some paint. A perfect match is Krylon 1613 Semi-Flat lacquer. To bad Krylon has discontinued this formulation. They now have a Semi-Flat enamel, but it isn't the same sheen. They now use the number 1613 for their satin black. Again, not the same sheen.

http://wardsweb.org/audio/JBL_2405/2405l.jpg

[Wardsweb]

while the paint is drying, I decided to polish the aluminum band with some Happisch SimiChrome.

http://wardsweb.org/audio/JBL_2405/2405m.jpg

[Wardsweb]

Just in time today, I received the stands from Lee. These things are really nice!

http://wardsweb.org/audio/JBL_2405/2405o.jpg

[Wardsweb]

A shot from the back.

http://wardsweb.org/audio/JBL_2405/2405p.jpg

[Wardsweb]

All done and now on to my crossover build.

http://wardsweb.org/audio/JBL_2405/2405q.jpg

[Lee in Montreal]

Very nice. Very 1970's. I think I may have sent the wrong stainless steel bolts. I have some that are barely portruding from the back of the plate. I will inlcude them next time I send you "something" ;-)

PS The brushed stainless steel goes very well with your lamp amplifier.

[grumpy]

wow, you've really polished the cannons :)

The pairing of custom stands and over-restored* driver casework looks nice enough to
have them proudly out on display.

*I mean that in a good way.

[maxwedge]

:applaud::applaud::applaud::applaud::applaud::appl aud::applaud:
Slick! Nice job again.

[Eaulive]

Nice stickers :D:D:D

[kdlsrinu]

Nice stickers :D:D:D
excellent write up,very informative.
thanks for posting

[toddalin]

Nice restoration.

I'm aways leary of people who advertise "original diaphragm," but where the rear screw is exposed.

Even if it is original, I know that simply turning that screw and not holding the phase plug still will twist a wrinkle into the diaphragm. :crying:


Sure, I know the rear tag can be removed/replaced with a heat gun (or a newer tag), but an original tag will have a serial number and most don't bother to go though the hair dryer routine before messing with it.

http://wardsweb.org/audio/JBL_2405/2405c.jpg

[Tim Rinkerman]

Media blasted and clear coated...

[bldozier]

Nice work tim, painted 2405s turned our well.