SEGA Blast City Speaker Foam Surround / Edge Replacement

Geo san

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Aug 16, 2026
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日本
A record of replacing urethane edges with rubber edges.

I am sharing the method I used to replace the speaker surrounds.

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③ Prepare the rubber edge.
スクリーンショット 2026-09-05 225117 (小).png


④ Apply rubber-based adhesive to the edge and the cone.
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⑤ Attach it to the speaker unit.
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⑥ Attach the speaker bracket.
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⑦ Attach to the main unit to complete.
スクリーンショット 2026-09-05 235109 (小).png




I sold the speakers I had replaced in Japan to people around the world via an auction.Aside from this method, it is also possible to replace the speakers by creating brackets using a 3D printer.I would be happy to share the details if there is interest.
 
@Geo san This looks great, please post up your process or where people can get their speakers fixed by you, or the parts to do so.
 
@Geo san This looks great, please post up your process or where people can get their speakers fixed by you, or the parts to do so.
thank you.
There is no specific location for repair requests. Since I handle repairs personally, I share information on repair methods and parts.
If you bring it to Japan, I would be happy to discuss it with you.
It is being sold on Yahoo! Auctions in Japan.
The selling price is 25,000 yen. It is currently discounted.
https://auctions.yahoo.co.jp/jp/auction/l1235129007

Comparison video after repair
View: https://www.youtube.com/watch?v=BXXQzCBjTOY

There are also ways to replace the speakers with non-OEM ones.
The sound quality isn't great, though.
View: https://www.youtube.com/watch?v=pUMniqiR_wY

The necessary parts and procedures will be shared at a later date.
 
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