Hi, I know very old and cheap speaker. But, I'm interesting about (yes, cheap and old so I can open and disassemble them).
Tannoy mercury series mx1, mx2 tweeters are the same. I have both. I absorbed weak sound level. It's very low I think. I measured empedance, resistance, crossover; everything is ok. Also, I opened one of them, coil looks good.
Now, I newly learned speakers have ferrofluit and if it loose it's viscosity, it can behave like a glue?! Those are very cheap speakers, is there any ferrofluit in it? I could't find anything in internet. If so I will open and clean it. Or cone may be very old.
How can a speaker lose it's volume? There is no replacement. I want to fix them.
Tannoy mercury series mx1, mx2 tweeters are the same. I have both. I absorbed weak sound level. It's very low I think. I measured empedance, resistance, crossover; everything is ok. Also, I opened one of them, coil looks good.
Now, I newly learned speakers have ferrofluit and if it loose it's viscosity, it can behave like a glue?! Those are very cheap speakers, is there any ferrofluit in it? I could't find anything in internet. If so I will open and clean it. Or cone may be very old.
How can a speaker lose it's volume? There is no replacement. I want to fix them.
Here's a good guide on how to replace ferrofluid: Replace ferrofluid in tweeter - a B&W tweeter as an example
I changed the diagram and cleared the ferrofluid. Now, perhaps I lost some power. Bec. ferrofluid behave like a cooler. Sound is all perfect. it's not related with before (very good now).
Only MY problem is when glue the diagram I think I changed the polarity of tweeter 😱. I couldn't hear any difference, but, there must be some change. I will change the cables in crossover. is there any metod to determine the polarity? I think there is no. But, if there is please write me
.
Only MY problem is when glue the diagram I think I changed the polarity of tweeter 😱. I couldn't hear any difference, but, there must be some change. I will change the cables in crossover. is there any metod to determine the polarity? I think there is no. But, if there is please write me
.
Positive polarity [+] = diaphragm moves outward, so use a 1.5 V battery or similar to test them. Solidly attach the battery's negative lead and just 'tap' its positive lead and use some nail polish/whatever to permanently mark whichever it is.
FWIW, should always test [new] drivers since sometimes they come from the factory wrong regardless of brand/model/date made.
GM
FWIW, should always test [new] drivers since sometimes they come from the factory wrong regardless of brand/model/date made.
GM