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 Post subject: Fix Hole In Speaker
PostPosted: Jul Tue 24, 2018 7:33 pm 
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Joined: Apr Tue 03, 2018 12:30 am
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Location: Long Beach CA
I dropped a socket wrench and made a 1½" gash in my 12" Magnavox speaker but I didn't panic. I took the speaker out to where I could handle it then rounded up wood glue and a napkin. I cut two pieces of the napkin to just over the size of the gash and applied glue to the area surrounding the gash and then added the pieces of napkin to each side and touched-up with glue over them and then rubbed a finger on each side of the speaker at the same time to make it smooth and let them dry. Worked OK so far.


Last edited by cook#yum on Jul Sat 28, 2018 4:42 pm, edited 1 time in total.

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 Post subject: Re: Fix Hole In Speaker
PostPosted: Jul Fri 27, 2018 1:03 am 
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Joined: Jan Tue 31, 2012 1:55 am
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Location: Mountains of Mourne. Ireland.
Paper coffee filters, dryer sheets and even a good ol' dollar bill ←75% cotton and 25% linen also work.

In cases where you remove the speaker for servicing, cut a piece of cardboard and attach it to the face with masking tape. Store on a shelf out of harms way.

Greg.


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 Post subject: Re: Fix Hole In Speaker
PostPosted: Jul Fri 27, 2018 1:15 am 
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Location: Lake Stevens, WA 98258
I've used coffee filters on audio gear speaker, with much success. A bit tougher than a napkin.


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 Post subject: Re: Fix Hole In Speaker
PostPosted: Jul Fri 27, 2018 2:45 am 
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Location: Long Beach CA
rdnzl wrote:
I've used coffee filters on audio gear speaker, with much success. A bit tougher than a napkin.


I agree with you. I have reusable filters. A tee shirt would be too thick.

cook#yum


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 Post subject: Re: Fix Hole In Speaker
PostPosted: Jul Sat 28, 2018 1:37 am 
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Joined: Jul Tue 10, 2018 3:10 am
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I use cheesecloth and rubber cement,seems to work good for me.


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 Post subject: Re: Fix Hole In Speaker
PostPosted: Aug Fri 10, 2018 11:28 pm 
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Joined: Aug Wed 26, 2015 9:41 pm
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Location: Baton Rouge, Louisiana
tea bags and super glue

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 Post subject: Re: Fix Hole In Speaker
PostPosted: Aug Thu 16, 2018 2:39 pm 
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egg wrote:
... even a good ol' dollar bill ←75% cotton and 25% linen also work.g.

I'd suggest using Canadian dollars or pesos. They're cheaper.


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 Post subject: Re: Fix Hole In Speaker
PostPosted: Aug Thu 16, 2018 2:54 pm 
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Ask 100 people and get......

First, don't add paper unless there is no other choice.....you do not want to add mass or local stiffness. For a tear, stitch it back together using very small amounts of glue. Use something fast-drying---things like Duco cement or fabric glue are good choices.

For a tear, first manipulate the pieces into position as best you can. Then start st the beginning of tear, and accurately position a short section...i.e. ~1/2" or so. Glue this with just a few small drops and wait for it to dry....then repeat the process.

If you do need to add paper, use the smallest possible overlap...i.e. ~ 1/8 to 1/4 inch.

Super-glue: NO. Superglue bonds in response to pressure which forces most of the glue into contact with the local water. You would have to firmly press two pieces together without simultaneously gluing your tools or your fingers.

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 Post subject: Re: Fix Hole In Speaker
PostPosted: Aug Sun 19, 2018 5:10 am 
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Location: Phoenix, AZ
pixellany wrote:
Ask 100 people and get......

First, don't add paper unless there is no other choice.....you do not want to add mass or local stiffness. For a tear, stitch it back together using very small amounts of glue. Use something fast-drying---things like Duco cement or fabric glue are good choices.

For a tear, first manipulate the pieces into position as best you can. Then start st the beginning of tear, and accurately position a short section...i.e. ~1/2" or so. Glue this with just a few small drops and wait for it to dry....then repeat the process.

If you do need to add paper, use the smallest possible overlap...i.e. ~ 1/8 to 1/4 inch.

Super-glue: NO. Superglue bonds in response to pressure which forces most of the glue into contact with the local water. You would have to firmly press two pieces together without simultaneously gluing your tools or your fingers.

I thought you should use clear acrylic nail polish for tiny tears


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 Post subject: Re: Fix Hole In Speaker
PostPosted: Aug Sun 19, 2018 1:51 pm 
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I would have said "could" and not "should"....

I have limited experience with nail polish...when I did try it for something, it dried too slowly. For speaker repair, you need something that dries quickly so you can progressively stitch a tear.

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 Post subject: Re: Fix Hole In Speaker
PostPosted: Aug Sun 19, 2018 4:36 pm 
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Location: Long Beach CA
I just used nail polish to seal off a dual wire that was no longer being used but still live (only 12v) and then I can use black electrical tape or a wire nut to finish.

cook#yum


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 Post subject: Re: Fix Hole In Speaker
PostPosted: Aug Tue 21, 2018 3:58 am 
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pixellany wrote:
I would have said "could" and not "should"....

I have limited experience with nail polish...when I did try it for something, it dried too slowly. For speaker repair, you need something that dries quickly so you can progressively stitch a tear.

Nothing dries slowly in Phoenix Arizona!!!


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 Post subject: Re: Fix Hole In Speaker
PostPosted: Sep Wed 05, 2018 9:19 pm 
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This silicone material is good to repair speakers. it is fluid enough to permeate the patch material and make a thin light coat.

https://www.permatex.com/products/adhes ... ss-sealer/

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 Post subject: Re: Fix Hole In Speaker
PostPosted: Sep Thu 06, 2018 1:49 pm 
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Location: VA 22602
I just finished a repair where there was a long (2") hole in a speaker utilizing a used dryer antistatic sheet and nail polish. Lay a base of nail polish, then place a piece of dryer sheet, cut to conform to the hole, and soak in nail polish on the speaker. I keep working the dryer sheet tight (with a light touch) to the speaker until the nail polish sets. Allow the polish to completely dry and you're all set. The used sheet is thin and tough and I've not had nail polish fail in years of using it on many speakers. For rips you bring the edges together and apply polish. Again, monitor it to prevent separation until the polish sets. A fresh dryer sheet is too thick and probably would not work satisfactorily where a used one is thin, tough and easily manipulated.

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 Post subject: Re: Fix Hole In Speaker
PostPosted: Sep Sat 08, 2018 2:12 am 
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For cracks and small tears I just grab my bottle of GC Service Cement and glue the edges back together. But white glue or wood glue works for me OK too. I try to use the least material to repair speakers but for something like a speaker in a typical AA5 radio, I would be hard pressed to say it impacts the low fi. sound of a small speaker on an AM radio. I suppose it might if you really globbed it up or botched it badly. An old CD or DVD can make a good quick cover taped over a 4 or 5 inch speaker. And a hole in the middle lets sound out a bit too, and is not too much of a risk factor. Heck, for long term storage maybe wrap cardboard all the way around a loose speaker to protect the sides as well as the front.

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 Post subject: Re: Fix Hole In Speaker
PostPosted: Sep Tue 11, 2018 8:23 pm 
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Location: Rayleigh, BC, CANADA
Kestas wrote:
egg wrote:
... even a good ol' dollar bill ←75% cotton and 25% linen also work.g.

I'd suggest using Canadian dollars or pesos. They're cheaper.

They're not cheap, they were taken out of circulation back in 1989, I saved many in pristine condition.

https://www.mtlblog.com/news/yes-your-o ... worth-7000

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 Post subject: Re: Fix Hole In Speaker
PostPosted: Jan Fri 25, 2019 7:52 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: 253 Blanche St. Plymouth, MI USA
For holes or even making new cones (yes I have, search "Mark Pictures" on ARF) I often use Manilla Business Envelope paper. CHEAP and sturdy paper, just always be sure to get adhesive all over where you are bonding it.
Mark Oppat


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 Post subject: Re: Fix Hole In Speaker
PostPosted: Jan Fri 25, 2019 8:19 am 
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Joined: Apr Tue 03, 2018 12:30 am
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Location: Long Beach CA
oldradioparts wrote:
For holes or even making new cones (yes I have, search "Mark Pictures" on ARF) I often use Manilla Business Envelope paper. CHEAP and sturdy paper, just always be sure to get adhesive all over where you are bonding it.
Mark Oppat



One thing I wanted to say is that an adhesive should be flexible and not get too hard and stiff. Otherwise you might have a dead spot in the speaker and reduce the sound.

cook#yum


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 Post subject: Re: Fix Hole In Speaker
PostPosted: Jan Fri 25, 2019 11:59 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 5752
Location: 253 Blanche St. Plymouth, MI USA
cook#yum wrote:
oldradioparts wrote:
For holes or even making new cones (yes I have, search "Mark Pictures" on ARF) I often use Manilla Business Envelope paper. CHEAP and sturdy paper, just always be sure to get adhesive all over where you are bonding it.
Mark Oppat



One thing I wanted to say is that an adhesive should be flexible and not get too hard and stiff. Otherwise you might have a dead spot in the speaker and reduce the sound.

cook#yum


No, the cone part is supposed to act as a homogeneous piston. A perfect cone has no flex except at the outer edge, so for that area, yes, should be flexible. BUT, even GC Service Cement has enough flexibility if just one coat or so is used.
Mark Oppat


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 Post subject: Re: Fix Hole In Speaker
PostPosted: Jan Fri 25, 2019 5:02 pm 
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Joined: Apr Tue 03, 2018 12:30 am
Posts: 112
Location: Long Beach CA
oldradioparts wrote:
cook#yum wrote:
oldradioparts wrote:
For holes or even making new cones (yes I have, search "Mark Pictures" on ARF) I often use Manilla Business Envelope paper. CHEAP and sturdy paper, just always be sure to get adhesive all over where you are bonding it.
Mark Oppat



One thing I wanted to say is that an adhesive should be flexible and not get too hard and stiff. Otherwise you might have a dead spot in the speaker and reduce the sound.

cook#yum


No, the cone part is supposed to act as a homogeneous piston. A perfect cone has no flex except at the outer edge, so for that area, yes, should be flexible. BUT, even GC Service Cement has enough flexibility if just one coat or so is used.
Mark Oppat


You're probably right. I was overthinking. I did it right after all. :-)

cook#yum


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