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I have a pair of Yamaha MSP3 speakers, a remenant of a bygone era when I didn't have small children or an endless list of DIY tasks and could while the idle hours away recording music.
Anyway. I managed to drop one of them, which sheared the mount for the tweeter and I'm now trying to decide how to fix it.
The cabinet looks like this:
The tweeter unit screws into this from the back, into four pillars molded into the cabinet. These pillars have all sheared.
I'd like to save the speaker and fix it, but how? I've considered:
1. Just have the tweeter floating. Seems like it'd be suboptimal for audio performance.
2. Glue the tweeter in with grab adhesive or similar. Would make it impossible to thereafter replace the tweeter if it failed.
3. Replace cabinet. Expensive, no UK suppliers I can find.
4. Possibly wedge the tweeter in place using some kind of internal bracing of wood, screwed thru the cab. Possibly not good for cab performance.
Any bright ideas?
Can you glue/plastic weld the 4 pillars into place and then remount the tweeter?
Mebbies. I was thinking it'd be an obvious place to shear again, but perhaps I could be careful not to drop it again 😂
Wrap tweeter in lightly greased clingfilm.
Stick a lump of epoxy putty in the speaker, push tweeter in place whilst epoxy cures. Make sure to remove excess putty while still soft.
Remove bagged up tweeter. Remove cling film, put tweeter back and drill holes then fit using self tappers.
I've done similar. Epoxy the pillars back in, and build up around each into a cone for strength as it doesnt matter how ugly the insides are!
If there are still 1cm or so of post stubs left in the cabinet then you could superglue the studs back and then reinforce with some wraps of 1" carbon tape and epoxy glue around the posts compressed by wrapping with pvc tape until it cures. This way you're not changing the internal volume.
Otherwise if it sheared flush then the epoxy putty seems like a good idea although I'd be inclined to mash some chopped glass or carbon fibre strands into it to provide a bit more structural integrity.
Epoxy putty is a good shout, thanks!
And good point in re: changing the volume of the cab. I'd not really considered that too deeply, but it would obviously be bad to change it too much.