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Bang & Olufsen 4" Foam Speaker Repair Kit FSK-4 (PAIR)

Part Number:BO-FSK-4
Bang & Olufsen 4" Foam Speaker Repair Kit FSK-4 (PAIR)
B & O Repair Kit #FSK-4
Bang & Olufsen 4" Foam Speaker Repair Kit FSK-4 (PAIR)
Your Price:$24.95


In Stock: 3202

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4" B & O Speaker Foam Repair New-Edge-It ® Kit, Part # FSK-4

Boston Acoustics Speaker Foam Edge Repair Kit
Outer diameter:
3-7/8" (98mm)
Roll outer diameter:
3-1/2" (89mm)
Cone diameter:
2-7/8" (73mm)
Inner diameter:
2-1/2" (64mm)
Foam roll width:
1/4" (6mm)
Variances up to 1/8" (3mm) from your speaker measurements are OK.
  • 4" angle attach woofer foam repair kit. New-Edge-It ® part # FSK-4
  • Original B & O woofer design
  • Fits all 4" frame models with 2-7/8" cone

Please check the model and size of your speakers before ordering to be sure you receive the correct foam edge repair kit.

  • Speaker New-Edge-It ® foam repair kits include:
  • Two new formula polyether foam rubber surrounds. These last much longer than the original foam.
  • Special CLEAR speaker repair adhesive part # MI-3035. The same adhesive we use for our repairs.
  • We do NOT use generic glue or Elmers type white glue like others sell.
  • Easy to follow illustrated instructions. Installation average time is 30 minutes per speaker.
  • You do not need to remove the dust caps to install these kits perfectly - every time.
  • See online installation instructions here: Speaker Refoam Instructions
  • FREE technical support. FREE shipping to any USA address.
  • Join over 150,000 customers that have used our New-Edge-It ® speaker foam repair kits successfully!
5 Stars
The repair kit is working perfect and the purchase and the delivery were very much ok.
Did you find this helpful?  2 of 2 Found Helpful
Reviewed by:  from Denmark. on 7/28/2014
4 Stars
I used the repair kit to replace the crumbling surrounds on an old pair of Beovox cx100 speakers. Overall the kit worked fine but it did require me to create some tools to get good results. My only complaint about the foam surrounds is the inside diameter could have been smaller by at least an 1/8 of an inch to give a bit more gluing surface to the outside edge of the speaker cone. As for getting a good glue seal I used short sections of acrylic tubing, one for the inside and one for the outside edge, to weight down the foam while it dried. I noticed that the glue when first applied to the foam will make it deform and curl, making it tricky to adhere it evenly with just the fingers or a burnishing tool. It is easy to shift the position of the surround with all the rubbing. The outside edge is easier to glue down because it is being adhered to a flat surface. I used an acrylic tube with a straight cut to hold it down. But the inside edge is being glued to a cone that is angled down. So to get a even flat seal I made a bevel cut at the end of an acrylic tube to match the angle of the cone. I got successful results despite having to redo one misaligned speaker. It helps to have some dexterity and delicate touch. I would have paid a little extra for some plastic rings to aid in the glueing. Thanks, Evan
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Reviewed by:  from Fremont, California. on 11/26/2014
4 Stars
since this kit was for a specific speaker I would expect it to fit properly. the foam ring was to big for the speakers though I was able to find a solution on your web site of cutting the ring to fit. parts where delivered on time and UNDAMAGED the glue tube opening was to large for this speaker size and put down to wide a bead of adhesive but in the end all worked out ok. my unusable speakers are sounding great now thank you !!!!
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Reviewed by:  from philadelphia. on 9/12/2015
5 Stars
Speaker foams were promptly shipped. I had to customize by cutting the foams, and tech support was extremely helpful and responded promptly to my inquiry.
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Reviewed by:  from NJ. on 4/26/2016
5 Stars
I will say that your support have been very good and if some friend will ask me how I have down with the speaker, I will recommend your company. And I will thank you for a good support.
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Reviewed by:  from Stockholm, Sweden. on 11/14/2016
5 Stars
perfect fit . excellent quality . easy refurb . pity we don't have these in uk !
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Reviewed by:  from uk. on 2/4/2017
5 Stars
Super quick delivery. Easy to follow instructions included. This was my first attempt at repairing speakers. It was easy. My Bang & Olufsen sound like they did when they were new - GREAT!
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Reviewed by: (Verified Buyer)  from Chesapeake. on 9/19/2017
5 Stars
The surrounds fit perfectly; the glue held them in place, and a month later, all is very well. I've cranked up the volume and bass; all is well. My cX 100's are now good as new! (and that is very good indeed!)
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Reviewed by:  from Burnsville, NC. on 9/27/2018
5 Stars
Perfect replacement for surrounds. Instructions and video made it easy. Just take your time and follow all the tips.
Did you find this helpful? 
Reviewed by:  from Atlanta. on 11/16/2018
5 Stars
Great product. My old Beovox CX50's are back to life! My only criticism is the size of the opening on the glue tube. I wish it was a little more narrow so I had more control over the amount of glue I was using. Other than that, great product and experience.
Did you find this helpful? 
Reviewed by:  from Austin. on 6/13/2019



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