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KEF 104/2 tweeters

Good afternoon everyone. I just picked up a pair of KEF 104/2 speakers on CL. They are fully functional and I currently have them integrated in my system (Parasound Halo preamp and Nakamichi PA-5 amp).  I am concerned about the tweeters (one is slightly dented) and the ferrofluid. I've read some DIY fluid advice and am contemplating doing the work.  However, I've also heard that these tweeters are not top quality.  I've considered replacing them all together with Morel MTD 30s buy I can't seem to find any.  I would like to find a direct fit so I don't have to retro fit anything. Not sure about other available tweeters.... Also, do you believe it's worth while to do the surrounds while I have it pulled apart. Or any other suggestions for how to rehab them?? Thank you much! 

icarus12
georgehifi's avatar
georgehifi
10,312 posts
 
icarus12 OP
My right speaker is playing in a very muddy


One thing not mentioned (I assumed you did this, please say you did), are they making sounds when you put your ear to each and every driver, you could have a blown driver or xover if they aren’t making any sounds. Then no cleaning and changing of ferrofluid will help.

Cheers George
icarus12 OP
24 posts
 
Hi George.  Thank you.  Yes, there is sound from the speaker in question, it's just muddled almost as if the speaker has a giant box over it when listening. 
ljgerens
155 posts
 
The mid range drivers are an integral part of the enclosure and cannot be removed. You should be able to tell from looking at the front of them if there are any issues with them. 

Did the previous owner replace the foam donuts? Perhaps he connected up some wires incorrectly when putting everything back together.


icarus12 OP
24 posts
 
I will check that tomorrow. Good idea!  I don't believe the donuts have been replaced but they appear in good shape. They arent crumbly or falling apart when I touch them. In my best estimation it doesn't seem they have been opened up at all. 
georgehifi's avatar
georgehifi
10,312 posts
 
Yes, there is sound from the speaker in question,
What about from each individual driver, not just the speaker as a whole?
Put in a 3khz sine wave tone off the internet, not too loud to blow the tweeter, then put your ear to each of the 3 front drivers to hear if they are all emitting that tone.

Cheers George
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