low output tweeter Help!

dayking79 · 21st January 2009, 03:54 PM

I have some Tannoy Mercury speakers that have a really low output tweeter on one of the speakers. I have ruled out the actual tweeter by swapping with the good tweeter. It must be the crossover then? But what could go on a crossover to make the tweeter play with such a low output?
Thanks.

homertooties · 21st January 2009, 04:22 PM

Hi there

If you have checked with another tweeter and result is same

Then i would suggest a break in connection starting with input terminal

check for continuity from terminal to board,then wires from board to tweeter,normally crossovers for tweeters consist of capacitors to
block low frequencies ,resistors to limit current and attenuate tweeter to match crossover rolloff of all drivers and of course inductors,not sure whether you have positors in there like morduant short use...

Check terminals ,check cables ,check continuity of inductors and resistors if present ,and test capacitor with another anything up
to about 12 uf...

Do not ever connect tweeter to amplifier with out a capacitor in series

Hope this helps

dayking79 · 23rd January 2009, 08:38 AM

Well i checked everything and it all pointed to the crossover components in which i tested one by one starting with the cap then on to the small guage wire coil and voila! That is what it was. To replace this thin guage wire coil, would i buy it off the reel and then as long as it is the same gauge just cut it to the same length as the faulty coil?

homertooties · 10th February 2009, 11:56 AM

Hi yeh sure just use enammelled wire of same length as inductance increases in length also diameter of wire,so check guage of wire first...

dayking79 · 10th February 2009, 02:39 PM

All done!
Thanks for all your help.

21st January 2009, 03:54 PM	#1
dayking79 diyAudio Member Join Date: Aug 2008	low output tweeter Help! I have some Tannoy Mercury speakers that have a really low output tweeter on one of the speakers. I have ruled out the actual tweeter by swapping with the good tweeter. It must be the crossover then? But what could go on a crossover to make the tweeter play with such a low output? Thanks.

21st January 2009, 04:22 PM	#2
homertooties diyAudio Member Join Date: Nov 2005 Location: suffolk	Hi there If you have checked with another tweeter and result is same Then i would suggest a break in connection starting with input terminal check for continuity from terminal to board,then wires from board to tweeter,normally crossovers for tweeters consist of capacitors to block low frequencies ,resistors to limit current and attenuate tweeter to match crossover rolloff of all drivers and of course inductors,not sure whether you have positors in there like morduant short use... Check terminals ,check cables ,check continuity of inductors and resistors if present ,and test capacitor with another anything up to about 12 uf... Do not ever connect tweeter to amplifier with out a capacitor in series Hope this helps __________________ if you strip it for parts keep them for years as soon as you get rid you will want them .....................

10th February 2009, 11:56 AM	#4
homertooties diyAudio Member Join Date: Nov 2005 Location: suffolk	Hi yeh sure just use enammelled wire of same length as inductance increases in length also diameter of wire,so check guage of wire first... __________________ if you strip it for parts keep them for years as soon as you get rid you will want them .....................

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23rd January 2009, 08:38 AM	#3
dayking79 diyAudio Member Join Date: Aug 2008	Well i checked everything and it all pointed to the crossover components in which i tested one by one starting with the cap then on to the small guage wire coil and voila! That is what it was. To replace this thin guage wire coil, would i buy it off the reel and then as long as it is the same gauge just cut it to the same length as the faulty coil?

10th February 2009, 02:39 PM	#5
dayking79 diyAudio Member Join Date: Aug 2008	All done! Thanks for all your help.

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