Last resort for a rubbing voice coil ( Please Read description ).

This is the final part of a series of videos I never uploaded. A customer asked me to recap his B&O loudspeakers after he had replaced the surrounds that had disinterested. Unfortunately one speaker was very slightly out of alignment and was resulting in a rubbing voice coil. This makes a rasping noise whenever the bass unit is in motion.
His original plan was to remove the surround again and re glue a new one, hopefully in the correct position. But there was then a risk of further damage to the unit when the glue was removed.
This repair/ hack/ bodge is only done by me as a last resort. The customer was also advised of this tactic being "risky".

[@jackbnmbl7]

Great inspiration! My vintage Pyle 10" sub had a slight rub as above. I figured which way the basket needed to move and let it have it with my trusty 20oz ball peen. Works perfectly now no rattle.

[@allthegearnoidea6752]

I have done this once on a old tube radio speaker but the ones I have worked on unbolted and had adjustment. Never seen that done on a modern speaker amazing trick thanks for sharing. I remember a lecture back at university and the lecturer said he didn’t understand why anybody would need more than 3W for a home use amplifier. He went on to perform a very good demonstration filling the auditorium with sound using something he must have built on the kitchen table. Happy days.

[@fretfanaticno1]

This technique saved me big time! Barely even had to bend frame and buzz was completely gone. Thanks!

[@SoddingaboutSi]

Glad it helped.

[@abrarshariar130]

​@@SoddingaboutSi sir mine is 6inch heavy frame speaker what can I do how can I bend it

[@sierrachief117]

Fcken hell is all I can say! Fixed the death rattle from my old and beat up sony sub immediately! I had already bought another system and was just playing around with the old sub. This trick proved to be immensely helpful. Now I'll fit this sub in my beater car. Extremely grateful 🙏

[@yoramstein]

Always nice to learn something at 02:30 cold January night.

[@markpirateuk]

That's a good tip, I had the same problem with an elliptical speaker, twisting the frame cured it completely!

[@youngwug]

I've removed the tremor by tying the speaker case in a movie theater, but what you're noticing is a higher technique. It's amazing.

[@peculiosa]

I was doing this from when I was 10 years old. If speaker dropped, heavy magnet easily bends frame which causes rubbing. So my thought was "Bend it back!". Most time it worked nicely. Rubbing can also happen when speaker dried after getting wet, misaligned from factory or after repair.

[@abrarshariar130]

Bro I got scammed buying 6inch speaker they gave me one Brand New and the other one was repaired I didn't know about it as it is my first time buying and building my own 😢 now I have the same problem plz give me some tips man

[@michaeledwards3528]

I’ve never had a speaker ever make a noise like that, but a very useful and interesting video. Thanks.

[@grahamtempleton779]

Simon, you are a genious :-) I dropped a PA speaker and at rehearsal it sounded awful. Took it apart and the found your video. The subtle application of a cardboard wedge under the rim twisted the chassis and viola, all fixed. Thank you :-)

[@SoddingaboutSi]

Thank you Graham.

[@smellysheep6]

This is actual genius. Thank you!

[@xedasxedas]

Take off the rubber ring, take off the dust cap, put some pieces of paper to equaly distribute the gap between the cone winding and the magnet, re-glued the rubber, let it dry, test if it rubbes and the glue the dust cap back. Its concentric sensible issue....allways center it with pieces of paper and what the guy probably done wrong

[@markfreedman2470]

Supurb repair. Kudos to you!

[@Andrewausfa]

Good fix Simon, no-one likes a saggy suspension. I've done this myself on a couple of Hacker radio 'Celestion' speakers but with a lump of wood and a panel hammer, just firmly tapping the chassis until the rubbing goes.

[@SoddingaboutSi]

We all get thst with age Andy. Just think of it as Botox for loudspeakers!

[@FingerHuman]

Amazing! This worked instantly on some audioengine A2s. Thanks so much!

[@doctordorkmeister5330]

happened to a speaker i have during shipping. I concluded that dropping the box caused enough force to bend the cage out of alignment. I used a hammer and a vise

[@TheDefpom]

I have done exactly the same thing for brand new car audio speakers! (I couldn’t be bothered taking them back)

[@PapasDino]

I'll be darned, didn't know that trick...thanks Simon!

[@andydugan1911]

Nice job! I'll try that on my 6.5 woofer I just smoked.

[@oldblokeh]

Great tip, thanks Simon.

[@user-lh8rb5wx6q]

As always, very appreciated! Good work, andI like how you sneeze at some stuff at times. Totally amazing to get to watch this, I am having some 901s with coil rub. Perfect info. // PAtrik Sweden

[@raceingdemon6464]

Nice Job Simon And Well Worth It As a Last Resort And Might Even Work On Some Eight Inch Speakers ? With a Bit More Force..Regards mike

[@MrDubje]

That was definitely useful! I didn't know of that trick. Thanks!

[@darrencoe5795]

Nice trick Simon. A bit nerve racking though.

[@Ownzo]

Genius! Thanks for posting this.

[@davidv1289]

Very interesting , I have never seen that done! I'll file that away for a buzzy day for sure. I'm new to your channel and have been enjoying many of your past videos, really well done. Did you ever figure out the Tektronix TDS 3012C flash drive issue. I have the much older TDS 3012 with a floppy drive and did quite a bit of research while looking at replacing the floppy with a USB flash drive. One thing I found was that the floppy had to be formatted by the scope as Tektronix modifies the BIOS Parameter Block of the Boot Sector changing the OS name to "TEK_TDS". Disks without this OS name give the exact same error message you were seeing. In the end I decide to install the NIC/RS-232 communication module for data capture and leave the floppy alone.

[@zachlatta1833]

I need a way to do this for my sub and since the basket isn't the same it's pretty hard to bend the basket is there any other way to reposition it?

[@aufornvic]

Simply brilliant.

[@flyurway]

Pretty cool...nice save as they say!

[@amirb715]

indeed a pretty good repair!

[@worroSfOretsevraH]

Nice one.

[@geraldchase6161]

Cool as hell hate to try that with a 1 5 inch lol

[@redfelipe6565]

Something magic! SuperLike.

[@tbrown6559]

Cool! Thanks

[@DasAntiNaziBroetchen]

Sadly the speakers I have have a plastic frame...

[@jussgotlifted3822]

Nice fix. Thanx

[@hellobooom]

My problem driver is cast so no bodge repair for me :(

[@NotSure723]

Or... you could peel the outer part up with a razor blade, and re-glue it.

[@SoddingaboutSi]

You could.

[@vladimirdjokic5741]

What if it's a tweeter though?

[@SoddingaboutSi]

New tweeter

[@vladimirdjokic5741]

@@SoddingaboutSi I mean, moving the voice coil around led to it sounding normal, but the plastic the tweeter is on is off center. I need to either drill the plastic or nove the vc around.

[@speakertester.1861]

Good idea!

[@sheilacole117]

Is there anyway I could have your email address so I can message you regarding my speakers . ?

[@LiamJones-bm1eu]

Wouldn’t do good for me cause I always blast my speakers lol