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<blockquote data-quote="mlstrass" data-source="post: 7300582" data-attributes="member: 569126">copper coil subs come from china, alum coil subs are from the US. Just reconed 8 subs a month ago and running a 3500 on each one and the &quot;junk&quot; spiders are holding up just fine. There is more to operator error then just setting the gain.Does the sub have coil rub when you push on it? How far below box tuning with 2x RMS are you playing and for how long? Is your electrical able to keep up full tilt for as along as you play it, have you verified this with a DMM?I&#039;ve never seen any of the issues that others seem to have and I&#039;ve been running nothing but HDC&#039;s for 3-4 years now. I have never run a new copper HDC straight from china though, but I have reconed to copper more then once and never had a problem. I religiously do a 10-12hr low volume break in and then beat the **** out of them...I did separate one at the triple joint a few years ago doing some testing, but that was a burp with 2 3500&#039;s at .25ohm per sub.</blockquote>

[QUOTE="mlstrass, post: 7300582, member: 569126"] copper coil subs come from china, alum coil subs are from the US. Just reconed 8 subs a month ago and running a 3500 on each one and the "junk" spiders are holding up just fine. There is more to operator error then just setting the gain. Does the sub have coil rub when you push on it? How far below box tuning with 2x RMS are you playing and for how long? Is your electrical able to keep up full tilt for as along as you play it, have you verified this with a DMM? I've never seen any of the issues that others seem to have and I've been running nothing but HDC's for 3-4 years now. I have never run a new copper HDC straight from china though, but I have reconed to copper more then once and never had a problem. I religiously do a 10-12hr low volume break in and then beat the **** out of them... I did separate one at the triple joint a few years ago doing some testing, but that was a burp with 2 3500's at .25ohm per sub. [/QUOTE]

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