Gluing Bucking magnets ...

[Czapala]

I bought some bucking magnets to attach to the back of the Car speakers I am installing above my monitor.  This was to lessen or cancel the magnetic field that distorts the picture.

If you do a search you will find members such as DiveMaster127 used this and "glued" the bucking magnets to the back of the speakers.

I got my bucking mags yesterday.  They are 1/2 to 3/4 the size of the speaker magnet (as suggested).  I applied them to the back and felt the opposing forces.  BUT when it got close to the magnet it attached itself as if the polarity matched.

I thought  "This CAN'T REDUCE the field!?" ...  but sure enough I took the speakers and tested them on my computer monitor with and without the bucking magnets on them.  It does reduce it ... 

So My question is this ... Why glue them on to the speaker magnets if they just stick there like a regular magnets?

I mean I bought some gorilla glue ... I may go ahead and glue them on I just thought that was weird and wondered why.

Any thoughts? ideas? "how magnets work" tutorials?   

[divemaster127]

Turn the magnets around & glue them with the opposite polarity that is where they work, if you glue them with matching polarity's you will have a worse problem, I glued them then used clamps, it worked fine
thanks
dm

[Czapala]

No ... that is what I am saying ...  I DID turn them to opposite polarity.

Then I pushed down and it stuck together, like a regular magnet.

Maybe the larger magnetic fields "envelopes" the smaller.  They connect and the resulting field is reduced by the "internal struggle" of fields ... 

or not ... just weird.

[Fozzy The Bear]

No ... that is what I am saying ...  I DID turn them to opposite polarity.

Then I pushed down and it stuck together, like a regular magnet.

If they stuck together then you DO have them the wrong way up!!

Best Regards,
Julian (Fozzy The Bear)

[MYX]

Actually I had the exact same thing happen. I think that it is because it is a ring and on the back of the speaker you have a metal plate. My hunch is that the magnet (speaker) does not actually go all the way to the center. So when you approach the magnets together you get the initial resistance until it passes the field and eventually clings to the metal center. After farting around with it for a while I decided to try putting them in the cab as is. I have had absolutely no problems.  Try it. The reason I tried it is because I started buying arcade cabs and looking at how they had their speakers. They had no bucking magnets or shielding. when I put them In I put up a game with a full image to make sure that there was no distortion. Give it a try.

Now, you have a couple of magnets sitting around. MAKE SURE THAT YOUR KID DOES NOT PICK THEM UP AND DECIDE TO PUT THEM DOWN ON THE DANG COMPUTER!!!!

[MYX]

But if you are going to glue it, I suggest epoxy and clamp it.

[Czapala]

SEE!  I am glad someone else had this experience.  I am not insane!

My friend and I actually got into a huge discussion about magnetic fields.  We thought that maybe since they were "disk" shaped that when brought together through the opposing forces it gets close enough for the opposite poles to attract ...  But I think "metal center" makes more sense.

So don't use Gorilla glue?

I actually was thinking about just putting them up without glue since it sticks there anyway.

[MYX]

I am not sure that this is a good idea because since you are putting them in a place that they do stay naturally, you are increasing the field instead of canceling it out. I would love to get my hands on a magnometer (sp?)(word?)(one of those things that measure magnetic fields). If you are at a point that you can put an image on your screen, put your magnets in a place that is close to where they will be and check for distortions. My speaker panel and control panel were the last 2 things I put on the cab because I did not want to get side tracked playing games and not putting then thing together. So I had a screen to look at and test it out. I would not glue anything until you have had the chance to test it. Hand clamps hold things together well. I would stick it together that way and check out the interference. If I had a problem I was going to order new magnets instead of using the ones I had ordered. Did you get them from Parts express? How big are the speakers?

Just to prepare you, even though you went with your own speakers, the sound of the older games is not as exciting as I once had hoped it would be. The sounds were just not created that big. When I am in my front end, the soundtrack I created rumbles my cabinet. It is great. Then I go into asteroids and here doot dit doot dit...I just remember more umph.  But hey bottom line I can go down stairs at anytime I want and play any game I can remember. What a wonderful thing.

[divemaster127]

The bucking magnets only help a bit, I dont know if the rest of the guys agree but I would think it more important first to make sure the orginal speakers are shielded to start with
dm