I'll start of by saying I guess the answer is no but I figure won't hurt asking given my limited knowledge...
Recently picked up a pair of speakers with known tweeters not working. Confirmed the crossover works fine (tested with a known working tweeter) tested both tweeters with a multimeter both no reading, pulled diaphragm off and found both had a break in the same spot. See attached pic.
I'm guessing the chance of fixing this is not going to happen? (Can an expert fix these as I definitely don't have the tools for it)
Speakers are wharfedale 512.2 '88-90 vintage.
Thanks for your thoughts,
Everhard.
Recently picked up a pair of speakers with known tweeters not working. Confirmed the crossover works fine (tested with a known working tweeter) tested both tweeters with a multimeter both no reading, pulled diaphragm off and found both had a break in the same spot. See attached pic.
I'm guessing the chance of fixing this is not going to happen? (Can an expert fix these as I definitely don't have the tools for it)
Speakers are wharfedale 512.2 '88-90 vintage.
Thanks for your thoughts,
Everhard.
Attachments
Better to just replace them with a suitable repacement, honestly.
Check out Parts Express online.
Check out Parts Express online.
Unwind 1 turn and solder. I think there's a substance you can dip the wire into to clean off the enamel that covers the copper. The enamel covered wire has to be cleaned otherwise you won't be able to solder. You can burn it off with a blob of solder, but I'd want to be a bit more careful because the wire is very thin.
A quick Google search say acetone usually works.
A quick Google search say acetone usually works.
Last edited:
You also might want to find out why they blew before fitting new ones ?
Fused wire suggests too much power sent to them.
Check series capacitor/crossover for short.
Fused wire suggests too much power sent to them.
Check series capacitor/crossover for short.
Thanks all, yes my first choice would be to replace the diaphragms, if I can find replacements... I'll check\contact with Parts express - they don't list wharfedale diaphragms when I search their site.
And yes I do plan on checking the crossover to make sure there's no issues there. I don't know the history behind how they failed. I bought the speakers from a guy that bought them at an estate sale, all he knew is they were dead when he got them, the original owner had told him as much. Supposedly that owner had them from new. They are in quite good condition given their age.
E.
And yes I do plan on checking the crossover to make sure there's no issues there. I don't know the history behind how they failed. I bought the speakers from a guy that bought them at an estate sale, all he knew is they were dead when he got them, the original owner had told him as much. Supposedly that owner had them from new. They are in quite good condition given their age.
E.
Supposedly a British speaker so not sure PE would have replacements, perhaps a Brit shop might.
Also there must be a Wharfedale users/lovers site somewhere, ask there.
If not, personally I´d replace the whole driver, easier than hunting for a diaphragm that fits there.
You might *try* to wipe adhesive once with acetone and try to unwind 1 turn.
Kill or cure and it´s already dead, so ...
Rather than bad crossover (not impossible of course) I´d rather think former owner abuse instead.
Also there must be a Wharfedale users/lovers site somewhere, ask there.
If not, personally I´d replace the whole driver, easier than hunting for a diaphragm that fits there.
You might *try* to wipe adhesive once with acetone and try to unwind 1 turn.
Kill or cure and it´s already dead, so ...
Rather than bad crossover (not impossible of course) I´d rather think former owner abuse instead.
I did that with some Polk tweeters, unwound a single wrap from the voice coil and soldered it back. It was a long time ago, and it seems like the wire was a little bigger than this tweeter's wire, but I couldn't tell much if any difference after the fix.
Careful with that screwdriver. The strong magnet would attract it and it would cause more damage to the diaphragm.
I'm leaning towards abuse causing them to fail, but I'm going to look at the crossover anyway.
I'll try the unwind and solder. Nothing to lose! The hunt is on.
I have a pair of 507.2 that I've had since almost new, back when I first got them a friend also had a pair of 507.2's - he replaced the tweeters (not broken, just wanted to upgrade them) - I sadly have no idea what he upgraded them with and I've lost touch with the guy long long ago. But I do remember when we compared the speakers those tweeters sounded incredible. If I could figure out what I could swap in I would!
E.
I'll try the unwind and solder. Nothing to lose! The hunt is on.
I have a pair of 507.2 that I've had since almost new, back when I first got them a friend also had a pair of 507.2's - he replaced the tweeters (not broken, just wanted to upgrade them) - I sadly have no idea what he upgraded them with and I've lost touch with the guy long long ago. But I do remember when we compared the speakers those tweeters sounded incredible. If I could figure out what I could swap in I would!
E.
That is why I provided the PX website info, and I'm sure others can toss in a few more.
Figuring out is relatively easy - mounting hole diameter, impedence, website recommendations, etc.