Obviously designed to work only with their covers. Buy the cheapest speakers off Amazon, I did, they fit with good sound. I had the Walmart Scosche 25 watt 3.5" that fit but I blew the thin cone on one after 10 years. https://www.amazon.com/dp/B000JLBHLG/?tag=gbody-20 https://www.amazon.com/dp/B0007L8BT4/?tag=gbody-20
Obviously designed to work only with their covers. Buy the cheapest speakers off Amazon, I did, they fit with good sound. I had the Walmart Scosche 25 watt 3.5" that fit but I blew the thin cone on one after 10 years. https://www.amazon.com/dp/B000JLBHLG/?tag=gbody-20 https://www.amazon.com/dp/B0007L8BT4/?tag=gbody-20
https://www.amazon.com/dp/B009MS7DS8/?tag=gbody-20
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