Optimus Woofer Repair Kit # FSK-12F

Optimus 12" Foam Speaker Repair Kit FSK-12F (PAIR)

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Optimus 12" Foam Speaker Repair Kit FSK-12F (PAIR)

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Part Number: RSO-FSK-12F

Availability: 518 In Stock:

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The most common problem with speakers are rotted, torn or damaged surrounds. The surround is the outer suspension part of the cone. Constant vibration, time and the environment cause foam and rubber surrounds to degrade. Cloth and paper surrounds can become brittle. This causes distortion and poor performance.

Luckily, our easy to install repair kits will make your old speakers sound just like new!

New-Edge-It® speaker repair kits. America's # 1 brand since 1992.

See Product Description, Title or the "Fits Models" tab to see speakers listed for this repair kit.

Repair kit includes:

2 x made in USA foam surrounds:
Outer diameter: 11.625" (295mm), Roll outer diameter: 10.625" (270mm), Cone diameter: 9.375" (238mm), Inner diameter: 8.9375" (227mm)
Flat attach
Exact dimensions can also be viewed in the photo gallery
1 x MI-3035 rubber based repair adhesive
1 x applicator brush
Easy to follow color illustrated instructions
FREE technical support and online videos

Product Overview:

Brand new formula made in USA surrounds last much longer than the originals.
We ship the same high quality parts used in the pro audio repair market.
We do NOT use generic glues or low quality imported surrounds like others sell.
Our exclusive clear drying rubber based repair adhesive is designed for paper, poly, and composite cones. Dries flexible, strong and clear.
Kits can be installed without removing the dust caps.
Dust caps, shims and gaskets are available for most models if needed.
Access to our complete library of how-to speaker repair videos.
Fast and FREE shipping to any USA address and worldwide shipping.
Economical and environmentally friendly. Save money AND save your speakers.
Simply Speakers® - Quality Speaker Parts since 1992!

Rating Snapshot

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Average Customer Ratings

4.9

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Home Audio Guy

JUST THE TICKET! Materials came quickly and as described, parts fit perfectly, video aided "how to". My speakers from back in the 60's are playing as if they are new. Love the big speaker boom of the bass notes. I couldn't be more satisfied. Great company to deal with!

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Dave from Newton on 8/9/2013

Senior

The foam repair kit installed easy and the end result was reviving an old set of speakers for around 25 bucks that most other folks would have thrown out.

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Tim Schmidt from michigan on 5/7/2015

stereo hobbyist

Great service and a good product. Product was delivered promptly. Very complete directions as well as great "how to" video on the website. More than enough glue included to get the job done. Easily repaired a pair of speakers. I would purchase again and recommend the product to others.

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Reviewed by: Steve Toth from Seattle, WA on 7/8/2015

So easy!

Thank you, thank you, thank you! Piece of cake repair and my albums sound great again!

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Reviewed by: jhmore from Maine on 8/1/2015

Item and supplies were as described and sent in a timely manner. They worked fine for me and the directions were very adequate to complete the refoam.

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Reviewed by: JohnJ from IA on 8/2/2015

Realistic 12" Woofer

I am very happy with this purchase. The instructional video was very helpful. The support staff answered my questions promptly so my repair was not delayed. The profile of the replacement foam does not match the original exactly but It does not seem to have a detrimental effect. It took about 4 hours to do two 12” speakers but half of that was glue drying time. When you consider that the speaker would be trash if not for this product what do you have to lose by trying it? I recommend watching the video several times before starting.

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Reviewed by: Harry from Bowmansville, PA on 8/14/2016

homeowner

The service I received was great,the repair kit was easy to install, thanks to the how to video.I repaired both speakers in a couple of hours.They work beautifully again.I have owned these speakers since 1973,and they sound great again.Thanks again, Mike

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Reviewed by: mike from Langley, British Columbia on 6/28/2018

Thrilled with the new sound

The sound from my old floor speakers had gotten ratty and made the speakers unusable. Found simplyspeakers on line, checked the product offerings, and videos and ordered the foam to see if I could make the sound good again. A few hours time, and little money later, they speakers sound as good as they did when they were new in 1972. Could not be happier. Fast service from the folks at SS, and all the technical help I could ever have needed.

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Reviewed by: dave carter from central MA on 10/8/2019

Q: Hi - will this fit model 40-1350 Realistic woofer? it does have the 12 inch frame, so i assume so, but want to confirm before ordering. Thanks in advance, Todd

Asked by: pod - 11/1/2017

A: Check the cone edge to see if it is angled or has a flat lip around the perimeter. This kit is for the flat style. The RSO-FSK-12A is for the angle attach style. Radio Shack made both types so be sure to verify before ordering.

Was this answer helpful? 1 of 1 Customer(s) found this Answer helpful.

Answer provided by: Simply Speakers (11/1/2017)

Q: I looking for a pair of speaker replacement foams for my Optimus 800 c speaker they have a 12" woofer hopefully you can help thanks!

Asked by: Steve - 4/10/2017

A: Please order kit # RSO-FSK-12A for your model. Thanks!

Was this answer helpful? 0 of 0 Customer(s) found this Answer helpful.

Answer provided by: Simply Speakers (4/11/2017)

Q: I have an Optimus subwoofer that needs the foam replaced. What is the difference between the 2 kits you offer?

Asked by: Josef - 10/31/2018

A: We sell both styles. Flat attach for cones having a flat outer lip, and angle attach for cones that have no lip. Check your woofer style before ordering, or enter the model into the search box to see which version you have. If you are unable to determine the style you need, please reach out to us via the contact link on our website.

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Answer provided by: Simply Speakers (10/31/2018)

Q: I need to replace for a pair of Optimus-1050 cat. #40-1131. I’m guess the A set is probably the best bet?

Asked by: Jeff - 4/8/2020

A: Yes, and in addition, your model uses a 15" woofer. Please order 15" angle attach kit part # RSO-FSK-15A.

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Answer provided by: Simply Speakers (4/8/2020)

Q: what is the difference between model FSK-12F and FSK-12 A. I am searching for a replacement speaker repair kit for an RS # 40-8424 12 inch

Asked by: Richard Roy - 7/6/2020

A: The F is for "flat" attach cone edge and the A is for "angle" attach cone edge. Look at the cone where the old foam is attached to see if it is flat or angled and order the kit to match. Thanks!

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Answer provided by: Simply Speakers (7/6/2020)

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UPC: 700621983507

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Optimus 12" Foam Speaker Repair Kit FSK-12F (PAIR)

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Rating Snapshot

Average Customer Ratings

Q: Hi - will this fit model 40-1350 Realistic woofer? it does have the 12 inch frame, so i assume so, but want to confirm before ordering. Thanks in advance, Todd

Q: I looking for a pair of speaker replacement foams for my Optimus 800 c speaker they have a 12" woofer hopefully you can help thanks!

Q: I have an Optimus subwoofer that needs the foam replaced. What is the difference between the 2 kits you offer?

Q: I need to replace for a pair of Optimus-1050 cat. #40-1131. I’m guess the A set is probably the best bet?

Q: what is the difference between model FSK-12F and FSK-12 A. I am searching for a replacement speaker repair kit for an RS # 40-8424 12 inch

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Optimus 12" Foam Speaker Repair Kit FSK-12F (PAIR)

Choose Options

Rating Snapshot

Average Customer Ratings

Q: Hi - will this fit model 40-1350 Realistic woofer? it does have the 12 inch frame, so i assume so, but want to confirm before ordering. Thanks in advance, Todd

Q: I looking for a pair of speaker replacement foams for my Optimus 800 c speaker they have a 12" woofer hopefully you can help thanks!

Q: I have an Optimus subwoofer that needs the foam replaced. What is the difference between the 2 kits you offer?

Q: I need to replace for a pair of Optimus-1050 cat. #40-1131. I’m guess the A set is probably the best bet?

Q: what is the difference between model FSK-12F and FSK-12 A. I am searching for a replacement speaker repair kit for an RS # 40-8424 12 inch

Frequently Bought Together

Recently Viewed

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