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kenjenner
04-03-2008, 03:47 PM
I have a pair of 375s and 075s with the matte black finish with some areas of the paint chipped off. Any rec for best product for touch-up, as JBL no longer carries this product.

ratitifb
04-03-2008, 11:45 PM
when chip is very small i simply use a black permanent marker :p

Earl K
04-04-2008, 05:18 AM
- I would guess that your drivers are painted with a "crinkle type" finish / ie; not exactly a straight-up, smooth "matte black" look .

- Try this older thread on "Crinkle Finishes" (http://audioheritage.csdco.com/vbulletin/showthread.php?t=4336&highlight=Crinkle) for a few ideas on the best way to proceed .

:)

Maron Horonzakz
04-04-2008, 06:47 AM
Leave it alone,,, The scrapes and chips add to its value.. 375 drivers,,, collecters do not like refinished drivers and lose its value when repainted;)

kenjenner
04-04-2008, 03:53 PM
[quote=Earl K;206453]- I would guess that your drivers are painted with a "crinkle type" finish / ie; not exactly a straight-up, smooth "matte black" look .

- Try this older thread on "Crinkle Finishes" (http://audioheritage.csdco.com/vbulletin/showthread.php?t=4336&highlight=Crinkle)for a few ideas on the best way to proceed .

thanks for the feedback

hjames
04-04-2008, 04:15 PM
Years ago I wanted to paint my Triumph twin (motorcycle) cylinder fins with a wrinkle black finish. One of the magazine recommended taking the cleaned, degreased jugs, and putting them in an over at 125-140 degrees F for 20 minutes or so to let the hunk of metal warm, then taking it outside and doing a quick spray using the engine-type high temp wrinkle spray-can paint. The tip was that wrinkle paint had 2 solvents mixed in. The first would dry quickly on the warm metal and give that wrinkle effect, the second would dry more slowly and gave durability.
Now - be careful - i don't recommend heating alnico magnets as they could loose some gauss, but this is how the engine folks do it.
(course they probably use the pro stuff, not the rattle can version)

Loud & Clear
04-05-2008, 09:37 PM
Ummm, I just spent most the winter, getting my powder coating set up ready to fire up. I'm just about there. They make some nice wrinkle finishes in powder coat. Tough Stuffffff, but can a driver minus the diaphram etc. take the 400* 20min. cure time??? I have some old alnico rca mid drivers. I had thought of powdering. Someone stop me if I'm going to screw them up Please! :dont-know ;)

RobD8870
04-11-2008, 10:53 AM
:)thought this deserved a bump up to the top.....if for nothing else the sake of Loud and Clears mids drivers...I have no idea if they could stand up to the temperatures but I would be scarred to find out...someone else please step up and help him out!!....:p

grumpy
04-11-2008, 05:13 PM
Appears Alnico V may well be OK up to something like 500 deg C...
(according to the Internet, font of irrefutable knowledge that it is):p
Not something a normal kitchen oven will do.

I'd be more worried about other components inside first (e.g., any adhesives
or if the throat is bakelite, 250 deg F should be considered max).

Completely disassembled, you would need to remagnetize anyway, so I
guess I don't really see a problem to solve. There was a good restoration
story w/ pictures in these forums somewhere...

Loud & Clear
04-14-2008, 09:22 AM
Ummmm... Thats food for thought. I'll have to do some experimenting. :)

Eric M.
06-10-2018, 08:46 AM
Leave it alone,,, The scrapes and chips add to its value.. 375 drivers,,, collecters do not like refinished drivers and lose its value when repainted;)

Is that really the case? I just picked up a pair of 375s which I will resell. The paint is in bad shape. Would I be better off just selling as is and not trying to fix up a bit? It's past the point of black marker touch up!!

Thanks,

Eric