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Fi Audio 18BL warranty issue - failed after an hour of use
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<blockquote data-quote="hispls" data-source="post: 8124789" data-attributes="member: 614752"><p>There is absolutely no way in hell they're reconeing a speaker for 10$ If you know a way to do that you will get rich quickly selling recones for 50$ and undercutting everyone else by half.</p><p></p><p></p><p>If you buy 100 coils the price of a 4 layer 3" is close to 30$ , I can't imagine them dropping down to 10$ even if you bought 10,000 at a whack. Really I doubt you could get garbage quality Chinese coils for 10$</p><p></p><p></p><p>I have twice (and I break a lot of woofers), both 18" woofers, 5KW and up pushing hard, and they stunk bad before they let go.</p><p></p><p><img src="https://i.chzbgr.com/maxW500/4641374208/h3FC94B0F/" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p>If this is manufacturer defect it is in the coil and nothing Fi did or did not do. Anything over 1200W continuous power will make a 3" 4 layer coil fail, Once you cross that threshold of where it can't dissipate heat fast enough they will overheat and fail quickly, exponentially faster as you increase power or decrease cone movement (cooling)</p><p></p><p></p><p>Calling ******** on this without some sort of proof.</p><p></p><p></p><p>I've only ever had coils go slinky from gross abuse. I've had some subs break within a short time after building them, but that's mechanical from either me being abusive or trying to skimp on glue. Of course you would know if it was a glue issue.</p><p></p><p></p><p>My thoughts exactly, and a worthy topic. One of the reasons I don't like 18" woofers, really. Side by side a smaller cone will move more and cool better. I find smaller drivers hold thermal power noticeably better than larger (assuming same motor, coils, and suspension).</p><p></p><p></p><p>Coil does not need to look black to have failed from heat, though almost always you'll get some smell before they fail from over-heating. Consider smaller drivers move more on the same power and cool better.</p><p></p><p></p><p>This is the most accurate explanation of cost of coils and most likely explanation for cause of failure. I wouldn't rule out that Precision made a dud coil, but this seems most likely.</p><p></p><p><span style="color: Silver"> </span></p><p></p><p><span style="color: Silver"><span style="font-size: 8px">---------- Post added at 10:36 AM ---------- Previous post was at 10:35 AM ----------</span></span></p><p></p><p><span style="color: Silver"> </span></p><p></p><p></p><p>I guess Jacob doesn't buy enough of them to know what the real price is right? Please tell me how I can get my coils for 3-4$.</p></blockquote><p></p>
[QUOTE="hispls, post: 8124789, member: 614752"] There is absolutely no way in hell they're reconeing a speaker for 10$ If you know a way to do that you will get rich quickly selling recones for 50$ and undercutting everyone else by half. If you buy 100 coils the price of a 4 layer 3" is close to 30$ , I can't imagine them dropping down to 10$ even if you bought 10,000 at a whack. Really I doubt you could get garbage quality Chinese coils for 10$ I have twice (and I break a lot of woofers), both 18" woofers, 5KW and up pushing hard, and they stunk bad before they let go. [IMG]https://i.chzbgr.com/maxW500/4641374208/h3FC94B0F/[/IMG] If this is manufacturer defect it is in the coil and nothing Fi did or did not do. Anything over 1200W continuous power will make a 3" 4 layer coil fail, Once you cross that threshold of where it can't dissipate heat fast enough they will overheat and fail quickly, exponentially faster as you increase power or decrease cone movement (cooling) Calling ******** on this without some sort of proof. I've only ever had coils go slinky from gross abuse. I've had some subs break within a short time after building them, but that's mechanical from either me being abusive or trying to skimp on glue. Of course you would know if it was a glue issue. My thoughts exactly, and a worthy topic. One of the reasons I don't like 18" woofers, really. Side by side a smaller cone will move more and cool better. I find smaller drivers hold thermal power noticeably better than larger (assuming same motor, coils, and suspension). Coil does not need to look black to have failed from heat, though almost always you'll get some smell before they fail from over-heating. Consider smaller drivers move more on the same power and cool better. This is the most accurate explanation of cost of coils and most likely explanation for cause of failure. I wouldn't rule out that Precision made a dud coil, but this seems most likely. [COLOR=Silver] [/COLOR] [COLOR=Silver][SIZE=8px]---------- Post added at 10:36 AM ---------- Previous post was at 10:35 AM ----------[/SIZE][/COLOR][SIZE=8px][/SIZE] [COLOR=Silver] [/COLOR] I guess Jacob doesn't buy enough of them to know what the real price is right? Please tell me how I can get my coils for 3-4$. [/QUOTE]
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Fi Audio 18BL warranty issue - failed after an hour of use
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