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To repair or not, a small rip in a mid

lattiboy

lattiboy

Well-Known Member
hi all,

I got a set of Mission 767s a few weeks ago and while the LFAU amp (google it) is being repaired I noticed one of the mids has a small tear. Because of the rubberized nature of the mid I am tempted to just seal it with adhesive, as this is a legacy part and will probably cost $100+ to repair property (if I'm lucky).

I will likely end up selling these monstrosities, so I will probably end up dropping the money, but as a rule is it frowned upon to just use some clear adhesive to seal it?

Thanks!

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yes the rubber repair compound you will have at these home depot and alike stores.
I have done this one time already, but both sides of the crack. To make sure, I applied an extreme small layer and after drying one again.
 
Since its a mid, it probably has an isolation can to protect it from the woofer poof.
Midst don't move much so mechanically the tear isn't a big deal.
So its pretty much just cosmetic with a slight chance that it allows a leak in a sealed cab.
If the cab is ported, its only cosmetic and doesn't bother anything.
 
Thanks all! Does anybody have a particular recommendation for an adhesive? Preferably Amazon as I have to make an order anyway. Looking mostly for clear coating as I believe the subs in the 767s are completely isolated from the center chamber where this mid lives. I doubt it will move much at all.
 
If it were me, I'd glue on a patch from the back, made from a piece of a coffee filter. Use a non-VOC compliant contact cement on both surfaces, being careful to seat it into the groove; I'd use a pencil eraser to press it into place) . Contact cement grabs immediately, fills gaps, sticks to rubber surfaces, and keeps some flexibility.
 
I've had good success with a product called Liquid Tape by Performix. No affiliation. There are several other brands, but this is the only one I have used. It bonds well, dries fast and remains very similar in feel to the original surround. It is barely noticeable when done. Put it on in thin layers. Use the first to just mend the edges, then build it up a couple more layers.
 
jberger said:
If it were me, I'd glue on a patch from the back, made from a piece of a coffee filter. Use a non-VOC compliant contact cement on both surfaces, being careful to seat it into the groove; I'd use a pencil eraser to press it into place) . Contact cement grabs immediately, fills gaps, sticks to rubber surfaces, and keeps some flexibility.
Click to expand...
I have used this method a lot on old radio speakers and it works great.
 
My personal choice would be to use Scotch Satin InvisibleTape, the purple stuff. It is wonderful stuff. It holds well, but peals off easy, if you need to try again. It even holds up well to sunlight. Try it. If it doesn't work for you, peel it off and try some of the glues.
 
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