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Opening up Speakers

One of the tweeters on a main speaker has blown and 'buzzes'. I want to take it out to replace it, but I have no idea how to open up the speaker 'cabinet' on this system. There are no screws to be found anywhere. I can get the front grill off, but that doesn't help me at all. How do you open up the speaker box?

Posted by Bilbo Baggins on

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Anonymous

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I it wood or plastic? if you cant easily pry the 'screen' in front off and there are no screws, your best bet is just to find a new speaker box to put new speakers in... only way to open it is to tear it apart, unfortunatly.. if you do decide to open it, CAREFULLY cut the screen off with a razor or exacto knife, once inside you'll know better what your dwaling wiht...good luck

Posted on Jan 27, 2007

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Tweeters will not work

might be a problem with the crossovers inside the speaker box.take them to a technition
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How do i tell if my problem if the high freq diaphram or the cross over

The crossovers in professional speakers don't fail that easily. It could be a blown tweeter. To confirm remove the metal grille-- remove the screws of the Horn Tweeter -- remove the cable connectors on the tweeter terminals ( Red and Black wire ). Now if you have a multimeter put it in Ohms range and touch the probes on the tweeter terminals-- It should show a reading betwwen 4 to 8 Ohms depending what is written on the back of the tweeter magnet. If you do not have a Multimeter you can take an ordinary cell/battery ( 1.5v ) from a TV remote and touch the terminals of the Horn Tweeter with the battery. + to the tweeter + ( a small red dot or mark will be there on the tweeter ) and -- to the tweeter -- . When you touch the terminals or give 1.5 volt supply the tweeter will make a scratching noise.
If you do not hear the scratching noise - it indicates a blown tweeter coil and will need replacement.See link below for spares:-
http://legacysoundservice.com/catalog1/product_info.php?products_id=1417
But if it does, you are in trouble and will need professional help from a electronic technician.
Could be blown HF Amplifier, suspect the crossover last. They seldom fail.
Revert back for more help
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Will not produce sound through the top end of my speakers,

While this may sound strange, it is not likely the receiver that is the probem, at least at this point. Remove the "tweeters" from the speakers and measure across the two leads. You should read continuity. If not, then the tweeters need to be replaced. I believe that you may have blown the tweeters.

Dan
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The tweeters in my yamaha NS-515F have blown. Any ideas where i can purchase suitable replacements?

http://www.partsexpress.com is a popular source for loudspeaker components.

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www.mouser.com carries many electronic components that could be used in crossovers.
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Amplifier

Yes. Most likely your factory speakers are blown as I've seen this many times. They are co-axials (2 ways) and the woofer part of the speaker is blown or the surround is rotted and only the tweeters are playing. I also believe that the front door speakers are low frequenct. Are they playing or buzzing?? Let me know and I can confirm this as the solution. You need new speakers.

Larry T
Winona Lake, IN
http://www.cybersoundsaudio.com/cybersounds/vehiclepics.html
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the best solution I've found is this:
1. Remove all the tweeter screws.
2. Take a thing metal rod (a coat hanger should work) and lightly tap the tweeter through the top port in the rear until it is loosened and comes out. The tweeter is totally sealed so you probably won't damage it if you need to do this to a working tweeter.

This method also works for the woofer but you need to be very careful to tap the frame or magnet of the woofer and not the cone.
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Tweeters & Midrange Speakers

If you have a Ohm Meter, check the resistance to the speakers. If it is very high, the speakers are burned, (or the crossover is (just capacitors, and resisters...cheap)). If it is close to 4 ohms check the wiring and connectors..to and at the speakers, most likly the receiver/amp is not blown.
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