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#420003 - 08/09/16 10:27 PM Glue Type Used on Woofer Assembly?
m_underwood Offline
old hand

Registered: 11/28/03
Posts: 81
Loc: Richmond, BC, Canada
My oldest Axioms (M40Ti) started buzzing, so I took out the offending driver and found this:



I’m guessing the coil is now rubbing. Anyone encounter this before? Any idea what kind of glue it is and how to get it off so I can replace it? Would it be safe for me to swap in the much newer drivers from my seldom used M3v3 for the moment?

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#420004 - 08/09/16 11:06 PM Re: Glue Type Used on Woofer Assembly? [Re: m_underwood]
Gr8_White_North Offline
connoisseur

Registered: 07/12/09
Posts: 2281
Loc: Whitehorse YT
Hi, I honestly don't know what was used on that but I think back then the drivers came out of the far east. I would suggest something like jb weld , it will get the job done. There are tutorials on youtube about how to center the voice coil when the cone is replace, I believe they use a 50hz sine wave. I think that would be the biggest challenge. There wont be an issue with using the other driver. When Axiom uses 2 driver in a speaker they use 2 drivers in series that are 4ohm's each and since both your speakers are single drivers you will be fine.
_________________________
DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry

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#420005 - 08/10/16 01:22 AM Re: Glue Type Used on Woofer Assembly? [Re: m_underwood]
m_underwood Offline
old hand

Registered: 11/28/03
Posts: 81
Loc: Richmond, BC, Canada
I tried removing the woofer from one of my M3s, no joy. The driver practically fell out of the M40Ti when the screws were removed, this one won't budge and I'm afraid of damaging things if I force it too much. Even tried removing the tweeter and pushing from behind, its completely stuck.

One odd thing I just noticed, the M3s look like they are veneered on both sides of the MDF(!). Not sure what the point of that was.


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#420006 - 08/10/16 10:26 AM Re: Glue Type Used on Woofer Assembly? [Re: m_underwood]
Gr8_White_North Offline
connoisseur

Registered: 07/12/09
Posts: 2281
Loc: Whitehorse YT
From what I have seen of the factory online, they veneer the sheet of MDF then cut reliefs with a cnc router. The speaker is then folded into its final shape and glued. I suspect the veneer was damaged in some way so they flipped it over and put more veneer on the other side to salvage the sheet of MDF.

As for the driver, what I do is use a wood screw that is larger than the mounting hole and turn it in so it grabs the metal surround , and then leverage it out with a large metal table spoon. The drivers are tough, I have built speakers with Axiom drivers and they can take it.

Richard
_________________________
DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry

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#420007 - 08/10/16 02:22 PM Re: Glue Type Used on Woofer Assembly? [Re: m_underwood]
m_underwood Offline
old hand

Registered: 11/28/03
Posts: 81
Loc: Richmond, BC, Canada
Thanks, I was able to get it with a pair of woodscrews. Unfortunately it looks like they changed the crimp on connectors. The older woofer has two different widths, the newer one uses the same width for both and uses different lengths.

While messing the the M40 woofer, I found that something beyond glue is holding the magnet portion on. It looks like it originally had a pair of rivets at the rear of the basket, but one of those rivets failed, and the 2nd is slightly stretched out from the weight of the magnet. It doesn't look like I can reliably repair this unless I can safely remove those rivets. I may need to find a replacement driver.

The newer woofer feels lighter, even though the basket is much thicker and heartier looking. Perhaps the newer one is cast aluminum and the old one is stamped steel maybe? Also don't see a shielding magnet on the M3's woofer.


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#420008 - 08/10/16 03:44 PM Re: Glue Type Used on Woofer Assembly? [Re: m_underwood]
Gr8_White_North Offline
connoisseur

Registered: 07/12/09
Posts: 2281
Loc: Whitehorse YT
Maybe a call to Axiom is in order. That's called a bucking magnet and is not really important just a different way of doing things not necessarily better. Are your newer speakers HP's , the cast basket is something they started do for people that feel cast is somehow better. It may aid in cooling the voice coil on a bigger woofer used for bass but on smaller ones there really is no difference. The ones in my car are plastic and I paid 350 for them. I think you will find the rivets are from the inside and to access them will require the cone to be removed, so it will be a big can of worms. Axiom makes their own drivers so call them and see what they can do.
_________________________
DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry

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#420010 - 08/10/16 04:28 PM Re: Glue Type Used on Woofer Assembly? [Re: m_underwood]
m_underwood Offline
old hand

Registered: 11/28/03
Posts: 81
Loc: Richmond, BC, Canada
The M3s are custom VaSSallo Edition units. It would've been just like me to go all out and check all option boxes.

I guess I'll need to give Axiom a call tomorrow. Just a bit hesitant to do so given the largely negative after sales support experiences I've had with them in the past.

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#420011 - 08/10/16 05:15 PM Re: Glue Type Used on Woofer Assembly? [Re: m_underwood]
Gr8_White_North Offline
connoisseur

Registered: 07/12/09
Posts: 2281
Loc: Whitehorse YT
I have not had a lot to do with Axiom with after sales though I bought some M80 v3 and they came with v4 drivers , Ian sent all the correct drivers on his dime and I got to keep the others. I have had a few other experiences and all were positive. Luck of the draw I suppose.

Richard
_________________________
DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry

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#420012 - 08/10/16 08:44 PM Re: Glue Type Used on Woofer Assembly? [Re: m_underwood]
Mojo Offline
connoisseur

Registered: 01/21/07
Posts: 4881
That M3v3 driver shown on the left is not shielded because you can clearly see the magnet. Nice basket though.

The only time you have to worry about shielding is if you're going to butt up the speaker against a CRT or a hard drive.

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#420013 - 08/10/16 09:02 PM Re: Glue Type Used on Woofer Assembly? [Re: m_underwood]
Gr8_White_North Offline
connoisseur

Registered: 07/12/09
Posts: 2281
Loc: Whitehorse YT
Thanks for adding that mojo, more info is always good smile
_________________________
DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry

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