Try asking aerial. Doubtful you could buy the same woofer from anyone except aerial in any case. They would probably sell a replacement one if need be though.
Thanks for your response. Comparing the part number on my woofer with those on web sites like Madisound I found that Vifa has very similar part numbers. I then searched and found a Sterophile article stating Vifa made custom woofers for Aerial 5s. I have sent an email to Aerial. Thanks.
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