Tutorial for changing rubber edge of horn

First remove the rubber edge of the broken newspaper, then clean the speaker frame and scrape it slowly with a scalpel. Fasten the old rubber edge of the horn basin slowly with your hands, and then scrape it gently with a scalpel, taking care not to hurt the paper basin; After the overall cleaning, use toothpicks to apply special glue (from a treasure) to the horn and paper basin, wait for 2 minutes, and then stick a new glue edge (also online), first stick an outer circle to fix the glue edge (pay attention to the symmetrical center), and then stick an inner circle (stick the horn basin). When it is dry, press the dust cap several times to see if it is cleaned. If it is adjusted quickly, it is not.