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Adjustable passive radiator series tuned 6th order.
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<blockquote data-quote="SlugButter" data-source="post: 8832321" data-attributes="member: 678073"><p>I always use polyfill in any sealed chamber that a sub motor sits in. Inside a vacuum, which is what a sealed chamber is, any air inside will be an adiabatic air mass. Basically the air will move, but the heat wont move and will sit where the heat is created, which is around the coil. Using polyfill helps create an isothermal air mass where heat is moved around with the air inside the vacuum. In theory, this should help dissipate heat more evenly inside the box and keep the coil cooler. I’ve always used it. A passive system might not need polyfill, since they are pushing and pulling opposite the sub, but I don’t see why you couldn’t use it. I used some in my passive radiator setup.</p></blockquote><p></p>
[QUOTE="SlugButter, post: 8832321, member: 678073"] I always use polyfill in any sealed chamber that a sub motor sits in. Inside a vacuum, which is what a sealed chamber is, any air inside will be an adiabatic air mass. Basically the air will move, but the heat wont move and will sit where the heat is created, which is around the coil. Using polyfill helps create an isothermal air mass where heat is moved around with the air inside the vacuum. In theory, this should help dissipate heat more evenly inside the box and keep the coil cooler. I’ve always used it. A passive system might not need polyfill, since they are pushing and pulling opposite the sub, but I don’t see why you couldn’t use it. I used some in my passive radiator setup. [/QUOTE]
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Adjustable passive radiator series tuned 6th order.
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