Repair your speakers perfectly with new surrounds in a simple way.

[coreyfellows]

I love the little tricks you used to set the foam.. I never thought to do that .. I definitely will from now on

[darkeyes]

Vary well done. I expect your video to help lots of audiofile out there

[HornWorm]

All you need to do is play music through it while gluing the outside down. The music will center it.

[alexandremartin]

Beware of the glue ! 
I'm currently in the middle of the repair of Magnat Monitor B woofers. 
On first speaker, my first foam inner rim assembly has been weary ( leaky glue, instruments sticking to the foam ...), mainly because of the use I've made of the glue : too much glue and too little drying time before assembly. 
Advise 1 : apply the glue as shown in this video, on both opposing parts, in a rather thin layer - excess of glue is here your worst enemy - and let it dry for 10 minutes ! I repeat let it dry at room temperature for 10 minutes.
And then you can assemble the parts so much easily and with great precision. You will manage to stick the foam inner rim as flatly as can be on the cone. This second speaker looks like brand new ! Just for the 10 minute drying time. I wish I 'd been give this tip beforehand !

[mgarbuthnott]

Hi Fred. Do you have guide on your site for centering using this method? What exactly are you feeling / listening for when you're tapping?

[seankearney]

Hi just watched your very informative video ...can you tell me what glue you used, is PVA Glue or something different, thank you.

[cedric]

Here is a trick that will help with whoever decides to do this. Once the outer layer of glue is applied, and you going to bond the surround o it...play a very low frequency signal through the speaker. The excursion will help to centre the speaker while you lining things up. It doesnt have to be played loud. you just want a low frequency signal so the cone can move up and down. Its this...or remove dust cap and use shims in the inside to keep thing centred. You going to have to replace with a new dust cap.

[Enigma]

What about attaching underneath the cone? My speakers were originally done that way, so my thought is to keep it original.

[scotta]

I have a pair of B & W Speakers. The midrange and woofer are Kevlar and Aluminum cones respectively. The glue is kind of a yellowish brown and seems to have crystalized. I'm not having much success getting it removed enough for the new surrounds. Is there something that can be used to melt/dissolve the old glue? 99% alcohol doesn't phase it. Thanks for any help you can provide. Hoping I don't have to junk these speakers. The maple cabinets are just beautiful.

[kipdons]

Handig! Ik vroeg me al af hoe dat het beste kon gebeuren. Hoe was het (luister-)resultaat uiteindelijk?

[sinonistoyemi]

zijn goeie speakertjes die bose 301's

[pay]

If you've got 20 years of experience centering the cone that way then it might work. I've got zero experience doing this so I've decided to use the tone generator method.

[audiofriends]

Critical comments or questions are welcome!

[musicisitall]

this is not the way to centre a speaker, sorry.. you need a battery or some power a 1.5 battery will centre the speaker perfectly