How To Repair Bose Speaker

How To Refoam Your Speaker: Instructions

You will need:refoam kit (foam, dustcap, shims, contact glue), utility knife, masking tape

i. Remove speaker from the cabinet. Marker the wires and terminals (positive and negative) before you remove the component so you lot will remember how to correctly re-install it in the cabinet. The old foam can be messy and sticky so piece of work on paper. (Bose 901 & 802 speakers should exist repaired in the cabinet.)

ii. If you lot take a ring OVER the outside edge of the cream, remove it by inserting a utility knife or chisel under the gasket (exercise not remove whatsoever gaskets nether the foam). Carefully pry effectually the gasket until it can be removed. You can reuse the original gasket or order new gaskets in well-nigh cases. Advent and Dahlquist Masonite rings tin can become brittle and then be careful not to break them during removal.

3. Scrape or peel the old foam from the speaker frame, cone, and the original gasket if you lot are re-using it. Remove as much of the old gum as possible without dissentious or cutting the cone. (We exercise not recommend the use of solvents or other chemicals to remove the foam. They can damage the remaining parts.) Clean any old foam fragments left behind.

4. To better improve the success of your refoaming repair, we suggest that yous remove the original dustcap– see FAQ's. Do not remove dustcap for Infinity Bullet woofers or Bose 901 or 802's- use eye, ear and feel to heart cream). Keep the blade horizontal so you lot volition not cut the cone or vocalisation coil leads. Piece centre of the dustcap and work your manner towards the outside border and remove. Utilize masking record to remove whatever dirt that might be on the inside of the voice whorl or in the phonation coil gap.

5. Insert vertical strips (about one/viii-1/iv″ wide) of shim cloth inside the voice curl in between the voice coil and magnet pole piece to keep cone/vocalism coil assembly centered for the refoaming process. Insert at 12:00, 6:00, iii:00, nine:00 and evenly go on until the cone assembly is secure. Check to insure that the cone and spider assembly are at a natural height and not sunken or elevated.

6. Dry fit the new foam on the speaker to cheque for proper fit to the cone and frame. The exact size cream might not be available and then you may need to cutting and seam the foam if it is slightly too big and/or trim the outside with pair of scissors. When we refoam, we reglue the new foam to its original place, just you might find information technology easier to attach the new cream to the front of the cone if the original was adhered to the back. (Advent or Dalquist woofers with masonite rings must have the foam returned to the original location.) Technically at that place will exist a alter to the speaker, but it is unlikely you could hear any differences.

7. Spread a thin, flat bead (shmear with glue tube tip or pen or brush) of glue to the edge of the cone. Practise NOT APPLY GLUE TO Foam. (Glue practical directly to foam will cause foam to curl and be very difficult to work with.) Let the mucilage to brainstorm to dry out and get tacky. Center the new foam onto cone and gently apply force per unit area with your finger beginning at the 12:00, six:00, 3:00 and 9:00 positions. If the new foam is centered correctly, then you tin can move your finger in a full circle to secure information technology. Apply glue to speaker frame, let it become tacky and then do the same to the foam on the frame.

8. If you are using new gaskets, you might need to trim them to the correct size. Spread glue on gasket and when tacky, install. You tin tape or clamp in position. If the gasket is taller than the foam, you can carefully turn upside down on a apartment surface to dry out. Do not slide, do not change alignment of foam or gasket. If the foam is taller than gasket, leave speaker confront and place same size component on top of speaker. Wait 24 hours and remove shims from vocalism coil. Lightly tap to examination that cone moves up and down without scraping or grinding.

Install new dustcap. If it is larger than original it will cover old adhesive markings.

Not all speakers are good candidates for refoaming. The remaining voice ringlet, spider and cone must be in good shape for refoaming to be successful.If your speaker does not motility freely, you might need speaker reconing . This is the removal and replacement of all the moving parts in the speaker frame including the vocalisation scroll, cone, spider, environment, dustcap, leads and gasket. In almost cases, this returns the component to exact new or upgraded specifications. Phone call or electronic mail united states for pricing and more info.

Refoaming Instructions PDF file

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