Welcome! Need support, you got it. Or share your ideas and experiences.
Return to Planar Speaker Asylum
75.138.156.231
In Reply to: RE: Tweeter issue posted by macmagman on August 09, 2015 at 12:58:19
Another example of a fuse not protecting the ribbon tweeter.
In any case, you need to find the cause of the failure before blowing another $100 on a tweeter replacement. Consider the cap in the HP filter - if it is shorting then the impedance of the HP filter would be about the same as the shunt coil ( < 0.5 ohm) and this would blow the fuse and apparently the ribbon as well. Just put an ohmmeter across the leads of the cap -- if you get a low reading (should be infinity), the cap is bad.
Edits: 08/09/15Follow Ups:
So do you think I have more of a problem than just the ribbon?
I was wondering why I would still blow a fuse if the ribbon was broken. I would hate to replace the ribbon if there were another problem causing it.
Neo is correct. It's certainly worth checking other components in the crossover network and/or wiring to verify everything is good. Otherwise you might install a new ribbon and have it fail as well.
The fact that you blew another fuse with the ribbon already bad points to this possibility.Dave.
Edits: 08/09/15
The ribbon and the fuse are very similar - basically a thin strip of metal. Which one blows first is a horse race -- they both heat up to the melting point -- and there is no reason that it can't be a dead heat. In any case, these things don't go pfft without a reason.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: