I had a JBL 1" titanium done tweeter become damaged (3-year-old nephew with little fingers). I have a set of .75" Ti dome tweeters from another set of speakers. The x-over point of the damaged 1" tweeter is 3k. The x-over point of the .75" tweeter is 5k. I can't find frequency ranges for either one. Will the .75" tweeter handle a 3k x-over point? Thanks in advance. (Both JBL)
Step 1, remove nephews fingers. 😀
Step 2, look up tweeter dome repair. normally can be done with some sticky tape and gentle un denting.
This of course depends on just how dented the diaphragm is.
Step 3, if step two doesn't work, why not replace the diaphragm. easy and cheap.
Would help if you post the model of tweeter or speakers.
A pic of the damage would be also good.
If the damage is really minor, repair might not be needed.
Step 2, look up tweeter dome repair. normally can be done with some sticky tape and gentle un denting.
This of course depends on just how dented the diaphragm is.
Step 3, if step two doesn't work, why not replace the diaphragm. easy and cheap.
Would help if you post the model of tweeter or speakers.
A pic of the damage would be also good.
If the damage is really minor, repair might not be needed.
Step one seems a bit extreme - perhaps just remove the opportunity to access by the nephew to the system, and maybe talk to the parents about sharing in the cost of repairs? 😀- A lock on the listening room door could come in handy.
Mr Cranky's other suggestions are definitely worth investigation.
Mr Cranky's other suggestions are definitely worth investigation.
If 5 kHz refers to the recommended crossover point of the 0.75" tweeter then the answer is no, it will distort when asked to play at medium to high sound pressure levels.
Swapping a tweeter for a different one will alter the sound. I would try to obtain a spare part
Swapping a tweeter for a different one will alter the sound. I would try to obtain a spare part
I just dug up this image of my 3/4" SEAS 19TAF/G tweeter disassembled:
This cheapish sort comes apart easily enough by carefully pulling back three plastic clips. You could then have a go at repairing a dented dustcap. More expensive tweeters usually unscrew, allowing you to lift off the dustcap and voicecoil, but occasionally some unsoldering from the connection pins is necessary.
You may also find a brown fluid in the magnet gap, called ferrofluid, which is replaceable.
I think a model number of the mysterious JBL speaker might help an informed answer here, but I am sure your mystery 3/4" will work in some fashion. Just won't be as loud or accurate.
I have a fairly extensive library of JBL designs, so might be able to help. It is useful to measure the DC resistance of tweeters to get an idea of their electrical response in a crossover, which affects frequency response and loudness.
1" tweeters tend to be 91dB loudness, 3/4" jobbies usaully around 88dB.
This cheapish sort comes apart easily enough by carefully pulling back three plastic clips. You could then have a go at repairing a dented dustcap. More expensive tweeters usually unscrew, allowing you to lift off the dustcap and voicecoil, but occasionally some unsoldering from the connection pins is necessary.
You may also find a brown fluid in the magnet gap, called ferrofluid, which is replaceable.
I think a model number of the mysterious JBL speaker might help an informed answer here, but I am sure your mystery 3/4" will work in some fashion. Just won't be as loud or accurate.
I have a fairly extensive library of JBL designs, so might be able to help. It is useful to measure the DC resistance of tweeters to get an idea of their electrical response in a crossover, which affects frequency response and loudness.
1" tweeters tend to be 91dB loudness, 3/4" jobbies usaully around 88dB.
Its all about learning to respect others property.
Lop off a finger or two and I guarantee nephew will learn that respect real fast 😉
But yes until we find out what the speakers are, it's no more than a guessing game...
Bit harsh on kids there, Old'n'Cranky...
They ALWAYS want to press tweeters in. They think it's a button. 😀
The smart parent like Christian of Spitfire Audio buys Harbeth speakers. The tweeters have a child-proof metal grille.
YouTube
One of the more interesting videos about speakers. Worth watching. 😎
They ALWAYS want to press tweeters in. They think it's a button. 😀
The smart parent like Christian of Spitfire Audio buys Harbeth speakers. The tweeters have a child-proof metal grille.
YouTube
One of the more interesting videos about speakers. Worth watching. 😎
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