MG ZR New vibe component speaker crackling.

[kilswitch73]

I know for a fact the speaker has not blown as it works when it wants too . Started yesterday and it seems when I had it in door some water might of got in to the back of speaker and got rusty , as when I flex the speaker its stiff and squeaky and there is a grinding kind of feel , but it's not the whole speaker it's only in a certain area of the speaker ,they are now built into the parcel shelf and amped up ,another note is that the tweeters are very very sensitive and are way to high but just can't get the balance right between mid and high , separate amped sub..

Any ideas of what's causing the crackle inside part of the speaker ?? If I flex it for 5 mins with my hand back and forth it loosens it up a bit when on .

Also if I put my finger on that certain part while on there's seems to be no vibration from it at all but rest of speaker is vibrating (amped) like it suppose to .

They are 6.5 components .


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[4743hudsonj]

Speakers cones should move freely up and down without any grinding feel. If they feel thelat way then something has become distorted and they won't be able to achieve high volumes without a lot of vibrations.

It looks as if they might be knakered mate one thing I'd perhaps try is playing a few long bass sweeps and test tones to see if you can figure out what frequency they vibrate at and to see of they free up.

Sent From A Pure ICS S2

[kilswitch73]

Originally Posted by 4743hudsonj

Speakers cones should move freely up and down without any grinding feel. If they feel thelat way then something has become distorted and they won't be able to achieve high volumes without a lot of vibrations.

It looks as if they might be knakered mate one thing I'd perhaps try is playing a few long bass sweeps and test tones to see if you can figure out what frequency they vibrate at and to see of they free up.

Sent From A Pure ICS S2

The weird thing is the louder turn up volume the easier the crackling stops , it dont stop fully , but its better ,i think at low volume cone doesnt move and the reason for crackling , then once the cone moves up and down a lot then the cracking goes off and playing loud for 10 mins gets rid of it , but only started yesterday so may end up on its way out , not had them long either ..how does warranty work on these Vibe slick black air's bought off ebay buisness ?

thanks

[4743hudsonj]

Originally Posted by kilswitch73

The weird thing is the louder turn up volume the easier the crackling stops , it dont stop fully , but its better ,i think at low volume cone doesnt move and the reason for crackling , then once the cone moves up and down a lot then the cracking goes off and playing loud for 10 mins gets rid of it , but only started yesterday so may end up on its way out , not had them long either ..how does warranty work on these Vibe slick black air's bought off ebay buisness ?

thanks

Vibe are generally good at working with their distributors to resolve issues but they are fairly stringent in checking for user damage. If im honest you situation sounds like user damage as there are only a finite number of ways they can fail if faulty and this isnt really one of them. The rust wont help either as it suggests water damage which immediately voids any warranty.

Are the black airs or slicks?

[kilswitch73]

They are black airs , been googling the problem and it's a common way for a fault and should be ok under warranty , I just won't tell them I had it in door and may be rusty .what I have spotted on the outside where the scratchIng is there is fragments of magnet mIssing like its blown the magnet and maybe Inside too .

Emailed seller and told me to send just the faulty speaker only back .

[4743hudsonj]

I have to admit ive never seen a speaker fail this way and it not being user damage (and i sell speakers and audio) The grinding sugests something has warped which is usually down to overdriving or water ingress.

Faulty speakers will usually just blow their could or sometimes the cone will detach from the base or the rubber as these are failures caused by defects from manufacture. Whats happened to yours as i said takes some external influence as it would be extremely unlikely for a speaker to function fine and then fail in this way from any manufacturing defect. . If you can get a replacement then good on you but dont hold your breath.

[kilswitch73]

Originally Posted by 4743hudsonj

I have to admit ive never seen a speaker fail this way and it not being user damage (and i sell speakers and audio) The grinding sugests something has warped which is usually down to overdriving or water ingress.

Faulty speakers will usually just blow their could or sometimes the cone will detach from the base or the rubber as these are failures caused by defects from manufacture. Whats happened to yours as i said takes some external influence as it would be extremely unlikely for a speaker to function fine and then fail in this way from any manufacturing defect. . If you can get a replacement then good on you but dont hold your breath.

I dont think a sony 480w XM-280GTX are going to over drive the speakers as i think they are only 80=90 watt RMS ..and the black aire are 120w RMS 360 peak ..i will just play dumb with the seller ..wont even mention them being in door .

there is no signs of water ingress no rustiness , just the scratching grind feeling on one side of the cone..

[4743hudsonj]

As I said good luck.. I hope you do get it sorted, I'm just telling you the lime these companies take.

You cannot over power speakers. If anything, more power can be safer. The problem is when distortion sets in (from under powering and/or incorrectly set gain) and the speaker tops and bottoms out. This is what usually causes the voice coil to distort and then rub against the magnet.

Water ingress is another cause. You mentioned there was rust on the bolts. That could easily mean there is rust on the inside too under the spider where you cannot see it.

The grinding is a physical distortion that's why most warranty claims of this type are denied as it take external influence to cause the distortion. I just hope the sellers don't send it to midbass for the claim. If they don't then you may well get a replacement.
Sent From A Pure ICS S2

[Richardw1992]

You can cause damage by over powering speakers, I once did which created similar symptoms to what you have.

The voice coil is commonly made out of thin enamelled copper wire, this is wound round the speakers bobbin and secured with some sort of glue. If the copper wire over heats due to too much voltage being sent through it, the glue can melt and expand and then set again in a different position, which causes the coil to scrape against the cylindrical inside of the magnet when it is moved up and down.

It is possible that water ingress has also caused swelling of papers or cardboard materials used in the speaker production, or possibly rust on the inside of the magnet.

[kilswitch73]

Originally Posted by Richardw1992

You can cause damage by over powering speakers, I once did which created similar symptoms to what you have.

The voice coil is commonly made out of thin enamelled copper wire, this is wound round the speakers bobbin and secured with some sort of glue. If the copper wire over heats due to too much voltage being sent through it, the glue can melt and expand and then set again in a different position, which causes the coil to scrape against the cylindrical inside of the magnet when it is moved up and down.

It is possible that water ingress has also caused swelling of papers or cardboard materials used in the speaker production, or possibly rust on the inside of the magnet.

Yea i agree .

on the amp im using for the vibes its got a voltage setting 480w XM-280GTX, its only about 70-80 per channel RMS so i cant be overpowering surely ?

But good news the seller is replacing the faulty speaker in which i do think was my fault as i really do think water got inside it , in fact i know water got inside it as when i undone the hex screws underneath most of all the one side of 5 screws (3 ) were rusty really rusty . i cleaned this up and before i sent it off it looked like new and no rust viable so this is probably why he has replaced it , we will see when i get it .


does anybody know about this voltage setting as i just left it what it was on , i think its on 3.5v i can verify later on .

Also what is L.F.E ? does this need to be on or off ? i have it off .

thanks

[Richardw1992]

No idea what L.F.E is, at a complete stab in the dark it might mean Low Frequency Enhancer - if this amp is designed to run subs it might have a bass boost feature built in. Google the amp online and try and find a manual for it, they are normally freely downloadable .pdf manuals from the manufacturers website.

As for the question "70-80W RMS can't be overpowering them" The 80watts per channel is just what the amplifier is rated to produce. It doesn't mean it constantly chucking out that much power. It all depends how loud you turn it up. If you are sensible you would hear the speakers started to distort, and sounds bad and turn it down before any long term damage was done. So don't ever worry about your amp being 'too powerful'. If anything more power is better, as you can get cleaner sound to the speakers which is better for them to operate on.