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The most common problem with speakers are rotten, torn or damaged surrounds. Constant vibration, moisture and the time cause foam, rubber and cloth surrounds to degrade. This causes distortion or the speaker to lose sound. Our easy to install repair kits will make your old speakers sound just like brand new.
You can repair your speaker with flexible Foam Surround easly and make it brand new with vibrant sound quailty. Our surround has flexiable design, produced by polyether technology, making it durable. polyether foam have excellent heat, light, ozone/weathering, and aging resistance. To correctly repair your speaker, it is sent with repair guide which includes videos and images.
Please check the model and size of your speakers before placing your order to be sure you receive the correct Surround. The Surround can deviate from the original size of your edge by up to 3 mm, this is not a problem during repair.
Product Specifications
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✔️ Lifetime Warranty
✔️ German produced flexible Surrounds are being used by many speaker producing companies
✔️ Amazing sound quality with extra flexible design
✔️ Special polyether made foam for high elasticity and durability
✔️ Special polyether made foam much better resistance to heat, light and ozone
✔️ We are shipping the same high quality parts that professional speaker producing companies use
✔️ Our easy to install repair kits can be installed without removing the dust caps
✔️ Dust caps, gaskets, cones and shims are available for most models in stock
✔️ Our exclusive drying rubber based repair elastic adhesive is designed for paper, poly, metal, and composite cones
✔️ Repair guide with images and videos
✔️ Original design for 4200+ speaker models
✔️ Thousands of customers have installed our speaker foam repair kits successfully
✔️ Easy to follow illustrated instructions
✔️ Installation average time is 30 minutes per speaker
✔️ Your speaker will sound as first day with our easy to install repair kit
✔️ We quickly ship your order worldwide
✔️ Lautsprecher Technik has been the leading supplier of loudspeaker parts since 2010
Anleitung: Sicken austauschen bei Dynaudio 21W54
The most common problem with speakers are rotten, torn or damaged surrounds. Constant vibration, moisture and the time cause foam, rubber and cloth surrounds to degrade. This causes distortion or the speaker to lose sound. Our easy to install repair kits will make your old speakers sound just like brand new.
Before cleaning away any old foam residue, take necessary precautions to protect your speakers cone and magnet.
Apply foam remover to any foam and adhesive residue around the edge of the cone. Wait 15 minutes. Clean the area to be glued and ensure it is dry.
Place the new edge under the cone. Apply the adhesive between the edge and the cone using a syringe. The adhesive won't dry immediately! You have enough time to get the foam into the center of the cone. Leave it to dry after the process is complete. Apply the same method when attaching the foam to the speaker basket. Drying time 45-60 minutes.
The adhesive will become transparent after it dries. If adhesive runs beyond the area to be glued, clean it with a damp cloth.
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| 1:If there is a gasket on top of the old foam, Carefully remove it with the utility knife and set it aside to reuse later. Carefully insert a sharp utility knife between the gasket and the old surround. Slowly work your way around the gasket. Prying it off until the original glue seam is broken. Scrape away any remaining foam from back of gasket. | 2:Remove any and all foam residue from the speaker frame an cone. You don’t necessarily have to remove all of the glue residue, but you must remove all of the foam residue. |
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| 3:Apply Foam Remover to foam and glue residue around edge of frame and cone. Warning! Do not apply foam remover to the cone. it will hurt the some cone. Allow to soak for 3-4 min. | 4:Scrape all remaining foam or glue from frame with edge of utility knife or wood chisel, making sure not to damage the cone. Use your fingers to rub off the remaining foam particles from the cone's edge. Remove as much foam as you can, but leaving a thin layer is acceptable. |
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| 5: Before gluing, check for proper cone and frame fit. If you are precise, draw a line before gluing. | 6:Small variances of less than 1/8” are OK. If the new edge fits cone, but the outer lip is too large for the frame, trim the outer diameter of the foam edge as needed. |
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| 7:Apply 1/8" bead of adhesive to flat lip on cone edge or to underside lip of foam if cone is angle attach style. Smooth adhesive uniformly and immediately apply to cone. Some wrinkling of the new foam is normal and will subside as the adhesive cures. | 8:Use your finger tip to smooth the adhesive uniformly and then install the foam to the cone while the adhesive is still wet and tacky. Install the new foam edge onto the cone. You can move the foam and make adjustments as needed at this time. Be sure to center the foam on the cone. In most cases it is easier to install the new foam to the TOP of the cone even if the original foam was installed behind the cone. Allow to dry for 20 min. |
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| 9:Insert the tip of your glue tube under the outer lip of the foam edge to apply a bead of adhesive around the frame. Press lightly on top of the foam to distribute the adhesive. | 10:Use your finger tip to smooth the adhesive uniformly and then install the foam to the frame while the adhesive is still wet and tacky. Install the new foam edge onto the frame. You can move the foam and make adjustments as needed at this time. |
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| 11:While the adhesive is still wet, exercise the cone by pressing down evenly around the dust cap to center the cone and voice coil. Notice how the cone can easily be moved in one direction or the other to easily find the "sweet spot" where there is no scraping or friction of the voice coil. Be sure to center the foam on the cone and frame. |
12:Apply adhesive to the top of the foam and install the gasket removed earlier (if applicable). Place the speaker gasket side down and allow to dry for 20 min. |
How much glue / remover do you need a couple of speakers?
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Repair Videos
Would you like more information? Please visit our instructions page.