OAP Speaker needs surgery - UK Vintage Radio Repair and Restoration Discussion Forum

Radio Scotland · 12th Nov 2021, 3:32 pm

Iv'e read pliable glue and a coffee filter will patch her up, But eager to hear from the speaker experts..

Cheers
Jay

Edward Huggins · 12th Nov 2021, 4:06 pm

That's a bad tear. Use Tissue paper and PVA. Coffee filter paper may be too rigid.
Edward

paulsherwin · 12th Nov 2021, 4:07 pm

PVA and kitchen roll or bits of newspaper is the usual solution. Lots of things will work.

OldTechFan96 · 12th Nov 2021, 4:09 pm

Cigarette papers are good for this since they are all pre-cut to a handy size.

paulsherwin · 12th Nov 2021, 4:19 pm

Some people like to dilute the PVA with water so it doesn't dry to a thick layer.

Radio Scotland · 12th Nov 2021, 4:52 pm

Cheers all,

PVA as in wood glue ?

Jay

Station X · 12th Nov 2021, 5:56 pm

Yes. The white stuff which dries clear.

Radio Scotland · 12th Nov 2021, 6:40 pm

Cheers for the advice folks

Jay

paulsherwin · 12th Nov 2021, 6:53 pm

Quote:

Originally Posted by Station X

Yes. The white stuff which dries clear.

It's also sold as craft glue or paper glue. Poundland sell it, along with many other places.

Radio Scotland · 12th Nov 2021, 7:06 pm

Quote:

Originally Posted by paulsherwin

Quote:

Originally Posted by Station X

Yes. The white stuff which dries clear.

It's also sold as craft glue or paper glue. Poundland sell it, along with many other places.

Poundshop ? Sounds good to me, Cheers paul.

Jay

Radio Scotland · 12th Nov 2021, 7:42 pm

What about masking tape ?

paulsherwin · 12th Nov 2021, 8:02 pm

I wouldn't use adhesive tape of any sort, as you never know how the adhesive will age. For a speaker you could use Micropore surgical tape then apply a coat of dilute PVA, but there isn't a lot of point.

Radio Scotland · 12th Nov 2021, 8:07 pm

Quote:

Originally Posted by paulsherwin

I wouldn't use adhesive tape of any sort, as you never know how the adhesive will age. For a speaker you could use Micropore surgical tape then apply a coat of dilute PVA, but there isn't a lot of point.

Ok i'll rule that one out, So do i apply glue to the backside of the paper then stick it to the cone ?

Daft question but never done it before

Jay

Radio Wrangler · 12th Nov 2021, 9:39 pm

wet the surface of the cone with the diluted PVA, lay the tissue paper on gently and dab with a brush wetted with the glue solution to get rid of air bubbles and to shape the repaired area. You may want to dampen some of the rest of the cone with solution so it dries uniformly.

Depending on access, you can put tissue on the back side as well.

Let it dry and decide if you need another layer.

David

Radio Scotland · 12th Nov 2021, 9:46 pm

Quote:

Originally Posted by Radio Wrangler

wet the surface of the cone with the diluted PVA, lay the tissue paper on gently and dab with a brush wetted with the glue solution to get rid of air bubbles and to shape the repaired area. You may want to dampen some of the rest of the cone with solution so it dries uniformly.

Depending on access, you can put tissue on the back side as well.

Let it dry and decide if you need another layer.

David

Cheers mr wrangler, Not much access on the rear of the cone due to a riveted on transformer,

But just the info i was looking for

Jay

hayerjoe · 14th Nov 2021, 9:56 am

I've never done this either but actually had a need to do it today so this post was very useful. My speaker doesn't have a rip like the OPs speaker though, mine has been eaten by some insect, but is it the same process? just wet it and layer tissue paper? and should I cover a wider area as the insect may have weakened the material but it not be visible to the eye?

thanks
Joe

Radio Scotland · 24th Nov 2021, 12:34 pm

All done

mark_in_manc · 24th Nov 2021, 2:27 pm

Very nice. Does it sound OK, and not rattle? What about the immersive sense of depth, and pin-prick detailing which, though precise, is never harsh?

frankmcvey · 24th Nov 2021, 3:23 pm

Quote:

What about the immersive sense of depth, and pin-prick detailing which, though precise, is never harsh?

Hah! - thanks for the coffee down the nasal passages, Mark!

mark_in_manc · 24th Nov 2021, 5:03 pm

I can add sod-all technical expertise to this site, so providing the occasional laugh is as good as it gets

12th Nov 2021, 3:32 pm	#1
Radio Scotland Heptode Join Date: Jul 2020 Location: Larkhall, South Lanarkshire, Scotland. Posts: 671	OAP Speaker needs surgery Iv'e read pliable glue and a coffee filter will patch her up, But eager to hear from the speaker experts.. Cheers Jay Attached Thumbnails __________________ Help!! I've been electrocuted by a glass thing that glows

12th Nov 2021, 4:06 pm	#2
Edward Huggins Dekatron Join Date: Sep 2015 Location: Southwold, Suffolk, UK. Posts: 8,327	Re: OAP Speaker needs surgery That's a bad tear. Use Tissue paper and PVA. Coffee filter paper may be too rigid. Edward __________________ Edward.

12th Nov 2021, 4:07 pm	#3
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,943	Re: OAP Speaker needs surgery PVA and kitchen roll or bits of newspaper is the usual solution. Lots of things will work.

12th Nov 2021, 4:09 pm	#4
OldTechFan96 Octode Join Date: Jul 2017 Location: Newcastle Upon Tyne, Tyne & Wear, UK. Posts: 1,178	Re: OAP Speaker needs surgery Cigarette papers are good for this since they are all pre-cut to a handy size.

12th Nov 2021, 4:19 pm	#5
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,943	Re: OAP Speaker needs surgery Some people like to dilute the PVA with water so it doesn't dry to a thick layer.

12th Nov 2021, 4:52 pm	#6
Radio Scotland Heptode Join Date: Jul 2020 Location: Larkhall, South Lanarkshire, Scotland. Posts: 671	Re: OAP Speaker needs surgery Cheers all, PVA as in wood glue ? Jay __________________ Help!! I've been electrocuted by a glass thing that glows

12th Nov 2021, 5:56 pm	#7
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: OAP Speaker needs surgery Yes. The white stuff which dries clear. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

12th Nov 2021, 6:40 pm	#8
Radio Scotland Heptode Join Date: Jul 2020 Location: Larkhall, South Lanarkshire, Scotland. Posts: 671	Re: OAP Speaker needs surgery Cheers for the advice folks Jay __________________ Help!! I've been electrocuted by a glass thing that glows

12th Nov 2021, 7:42 pm	#11
Radio Scotland Heptode Join Date: Jul 2020 Location: Larkhall, South Lanarkshire, Scotland. Posts: 671	Re: OAP Speaker needs surgery What about masking tape ? __________________ Help!! I've been electrocuted by a glass thing that glows

12th Nov 2021, 8:02 pm	#12
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,943	Re: OAP Speaker needs surgery I wouldn't use adhesive tape of any sort, as you never know how the adhesive will age. For a speaker you could use Micropore surgical tape then apply a coat of dilute PVA, but there isn't a lot of point.

12th Nov 2021, 9:39 pm	#14
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,869	Re: OAP Speaker needs surgery wet the surface of the cone with the diluted PVA, lay the tissue paper on gently and dab with a brush wetted with the glue solution to get rid of air bubbles and to shape the repaired area. You may want to dampen some of the rest of the cone with solution so it dries uniformly. Depending on access, you can put tissue on the back side as well. Let it dry and decide if you need another layer. David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done

14th Nov 2021, 9:56 am	#16
hayerjoe Hexode Join Date: Oct 2020 Location: Bridgewater, Tasmania, Australia Posts: 483	Re: OAP Speaker needs surgery I've never done this either but actually had a need to do it today so this post was very useful. My speaker doesn't have a rip like the OPs speaker though, mine has been eaten by some insect, but is it the same process? just wet it and layer tissue paper? and should I cover a wider area as the insect may have weakened the material but it not be visible to the eye? thanks Joe Last edited by hayerjoe; 14th Nov 2021 at 10:02 am.

24th Nov 2021, 12:34 pm	#17
Radio Scotland Heptode Join Date: Jul 2020 Location: Larkhall, South Lanarkshire, Scotland. Posts: 671	Re: OAP Speaker needs surgery All done Attached Thumbnails __________________ Help!! I've been electrocuted by a glass thing that glows

24th Nov 2021, 2:27 pm	#18
mark_in_manc Octode Join Date: Nov 2011 Location: Manchester, UK. Posts: 1,874	Re: OAP Speaker needs surgery Very nice. Does it sound OK, and not rattle? What about the immersive sense of depth, and pin-prick detailing which, though precise, is never harsh? __________________ "The best dBs, come in 3s" - Woody Brown

24th Nov 2021, 5:03 pm	#20
mark_in_manc Octode Join Date: Nov 2011 Location: Manchester, UK. Posts: 1,874	Re: OAP Speaker needs surgery I can add sod-all technical expertise to this site, so providing the occasional laugh is as good as it gets __________________ "The best dBs, come in 3s" - Woody Brown