Place an Order? Toll Free: 1-800-511-3343
Shopping Cart -
0 item(s)
Search by
Hello Guest, Login

Radio Shack Optimus 12" Foam Speaker Repair Kit FSK-12A-1 (SINGLE)

Part Number:RSO-FSK-12A-1
Radio Shack Optimus 12" Foam Speaker Repair Kit FSK-12A-1 (SINGLE)
12" Subwoofer Repair Kit # FSK-12A-1
Radio Shack Optimus 12" Foam Speaker Repair Kit FSK-12A-1 (SINGLE)
Your Price:$19.00
List Price:$25.00
You Save:$6.00


In Stock 1143

Choose Options

Add Gasket?
Add Liquid Foam Guard? help

Radio Shack Optimus 12" Foam Speaker Repair Kit FSK-12A-1

12" Foam Edge Repair Kit
Outer diameter:
11-3/4" (298mm)
Roll outer diameter:
10-5/8" (270mm)
Cone diameter:
9-1/4" (235mm)
Inner diameter:
8-5/8" (219mm)
Foam roll width:
3/4" (19mm)
Variances up to 1/8" (3mm) from your speaker measurements are OK.
  • 12" angle attach woofer foam repair kit. New-Edge-It ® part # FSK-12A-1
  • Original Radio Shack design
  • Fits most 12" frame speakers with 9-1/4" cone
  • Fit Radio Shack and Optimus subwoofer models:

    Radio Shack, Optimus: Pro SW-12, Pro SW12, Pro SW 12, Pro SW-14, Pro SW14, Pro SW 14, 3044, 40-4050, 40-4051A, 40-4072, and many more!

    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:
  • One 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
passive sub rebirth
Video very helpful. This is a 20 year old Radio Shack passive 12" subwoofer whose foam surround was shot. I was about to throw it away. On line, I happened to see your video about repair and said why not and ordered. The repair was easy and the sub speaker suddenly looked brand new again. I have a Pyle 2x40 amp and hooked it up to the sub which is now "active." Sounds as good as my other active sub costing $$$more!
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by:  from livingston, nj. on 9/15/2015
5 Stars
Speaker Repair
I purchased this foam surround to repair a vintage passive subwoofer. I cleaned the old stuff off the woofer and metal.that's where I spent most of my time. I installed the new foam surround. Let it dry, reinstalled the w[fee to the cabinet. Sounds very nice with two satellite speakers.
Did you find this helpful? 
Reviewed by:  from Cambridge OH. on 4/6/2016
5 Stars
The foam speaker repair kit was perfect. I was able to repair the 12" speaker in my sub to its original condition. The video explained exactly what to do and the process was simple. Great product. Repair don't replace.
Did you find this helpful? 
Reviewed by:  from New Jersey. on 5/11/2016
5 Stars
Item worked perfectly and repair installation was easy with the enclosed instructions. A very economical option to repair speaker on an older system.
Did you find this helpful? 
Reviewed by:  from Minnesota. on 6/13/2016
5 Stars
The replacement foam worked fine. The speaker sounds like it's brand new. Like anything else, it took a few tries to do a job I was proud of. That's not to say the first 2 didn't work fine. They work perfectly too. They're just not as neat looking (especially the first one)as I would have liked.
Did you find this helpful? 
Reviewed by:  from Illinois. on 2/23/2017
5 Stars
The fix!
I have a 90's model Radio Shack subwoofer that I thought was in good shape. I noticed a strange sound. The foam surround was crumbling. I have used Simply Speakers in the past to repair two other older speakers so I know their foam surrounds work, and are easy to install. I cleaned up my 12-inch woofer, installed the new foam surround, and not only is the speaker working I think the new surround improved the bass tightness. If you have speakers that need only new surrounds, watch the Simply Speakers video and try it yourself. You don't have to throw your speakers away!
Did you find this helpful? 
Reviewed by:  from PA. on 2/24/2019
5 Stars
The foam and glue are of good quality, the instructions are through but concise. The procedure went well, the speaker sounds as good as new.
Did you find this helpful? 
Reviewed by:  from buckhannon wv.. on 11/17/2013
5 Stars
Great kit, very inexpensive and easy to use. Instructions were easy to read and the whole repair took less than an hour, excluding the drying times for the rubber cement. Arrived quickly. Highly recommended
Did you find this helpful? 
Reviewed by:  from La Selva Beach, CA. on 12/24/2013
5 Stars
Great Value
I have a very old 12" Optimus passive sub. The foam was badly deteriorated. At first, I was a little hesitant to try this repair myself. But it was not difficult at all. I read the written instructions carefully and also watched the YouTube video. Just get a well-lit work area and take it slow. The result is fantastic. Speaker is good as new and sounds awesome. Great value and great support. Very fast shipping. My only complaint is the price of the single foam is almost as much as the pair. A price around $14.95 would make more sense I think.
Did you find this helpful? 
Reviewed by:  from North Texas. on 2/6/2014



Related Items

Ivory Speaker Grill Cloth 60
Average Rating(11)
In Stock
Jet Black Speaker Grill Cloth 60
Average Rating(159)
In Stock

Recently Viewed Items

  • Speaker Repair Videos
  • SS Apparel
  • Diaphragms & Parts
  • New-Edge-It Foam Kits
  • Pro Cloth Edge Kits
  • Rubber Edge Kits
  • Ferro Fluid Kits
  • Speaker Repair Parts
  • Advent - AR - NHT Parts
  • Genuine Eminence Parts
  • JBL Factory Parts
  • ESS Factory Parts
  • EV Factory Parts
  • Peavey Factory Parts
  • Replacement Speakers
  • Tweeters
  • Midranges
  • Woofers
  • Full Range
  • Speaker Grill Cloth
  • Speaker Grills
  • SS Audio Recone Kits
  • Speaker Adhesives
  • Speaker Dust Caps
  • Speaker Gaskets
  • Online Instructions
  • Speaker Accessories
  • Crossovers
  • Specials
  • Scratch and Dent - Open Box
  • Customer Photos & Videos*
  • Speaker Repair Photos
  • Special Order Parts
  • JBL Style Foil Speaker Badges
  • Top Sellers
    New Releases