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<blockquote data-quote="Gemcoska" data-source="post: 7878897" data-attributes="member: 605534">Hey Guys,So let me first of say I know that I rushed this job.&nbsp; So now that its all done, I&#039;m trying to fix the mistakes.Here&#039;s the setup:Sub: 12&quot; SSA XCON, purchased here from imp4pdabest, 1750W RMS Dual Voice coil wired in parallel down to 1-ohmEnclosure: custom built ported box built into the side of a suburban.&nbsp; Note that I found a couple corners i forgot to fiberglass in so there is a size-able amount of air escaping here.Amp: Refurbished Cadence z1200, purchased from ebay, 1200w RMS @1 ohmPower line: 80 amp inline fuse with 8 gauge wire.There are a couple issues:1) The SubI didn&#039;t really do a super thorough job inspecting the sub before installation, but when i hooked it up to power, it makes alot of mechanical noise.&nbsp; The cone still moves back and forth without any weird resistance and the spider looks all attached.&nbsp; The problem is that in the higher frequencies, it sounds like the sub is being hit with a bat.&nbsp; At the lower frequencies, it sound great; clean bass, no other noise.&nbsp; I&#039;m wondering if its just the leaks in the enclosure that I haven&#039;t fixed yet or if the sub is blown.&nbsp; I&#039;ve also read that undersized power line can cause this also.2) The AmpThe short of it is that it overheats WAY to quickly.&nbsp; I&#039;m not bumping very hard at all and after 10-15 minutes is is burning hot and shuts off.&nbsp; Also, when the bass this the voltage drop is noticable; all the lights dim and the voltage gauge dances.&nbsp; The gain is set to about 74%.&nbsp; I&#039;m wondering if there&#039;s something wrong with this refurbished amp but I&#039;ve never tried to push a DVC 12&quot; sub before.&nbsp; Also, if thats all the thump I&#039;m going get outta 1200w, then I may have to consider a higher wattage DIGITAL class D amp bc I&#039;m not going to upgrade my battery and alternator.3) The power lineI know that 8 gauge is undersized for a 1200W amp, but when i went to put in 4 or 2 gauge, the guy at the store told me to just check the power line to see if it gets really hot when you use it, otherwise its fine.&nbsp; Temp wise it seems fine, but I wonder if it could be contributing to my issues.ANY POSITIVE HELP would be greatly appreciated.Thanks,Rob</blockquote>

[QUOTE="Gemcoska, post: 7878897, member: 605534"] Hey Guys, So let me first of say I know that I rushed this job. So now that its all done, I'm trying to fix the mistakes. Here's the setup: Sub: 12" SSA XCON, purchased here from imp4pdabest, 1750W RMS Dual Voice coil wired in parallel down to 1-ohm Enclosure: custom built ported box built into the side of a suburban. Note that I found a couple corners i forgot to fiberglass in so there is a size-able amount of air escaping here. Amp: Refurbished Cadence z1200, purchased from ebay, 1200w RMS @1 ohm Power line: 80 amp inline fuse with 8 gauge wire. There are a couple issues: 1) The Sub I didn't really do a super thorough job inspecting the sub before installation, but when i hooked it up to power, it makes alot of mechanical noise. The cone still moves back and forth without any weird resistance and the spider looks all attached. The problem is that in the higher frequencies, it sounds like the sub is being hit with a bat. At the lower frequencies, it sound great; clean bass, no other noise. I'm wondering if its just the leaks in the enclosure that I haven't fixed yet or if the sub is blown. I've also read that undersized power line can cause this also. 2) The Amp The short of it is that it overheats WAY to quickly. I'm not bumping very hard at all and after 10-15 minutes is is burning hot and shuts off. Also, when the bass this the voltage drop is noticable; all the lights dim and the voltage gauge dances. The gain is set to about 74%. I'm wondering if there's something wrong with this refurbished amp but I've never tried to push a DVC 12" sub before. Also, if thats all the thump I'm going get outta 1200w, then I may have to consider a higher wattage DIGITAL class D amp bc I'm not going to upgrade my battery and alternator. 3) The power line I know that 8 gauge is undersized for a 1200W amp, but when i went to put in 4 or 2 gauge, the guy at the store told me to just check the power line to see if it gets really hot when you use it, otherwise its fine. Temp wise it seems fine, but I wonder if it could be contributing to my issues. ANY POSITIVE HELP would be greatly appreciated. Thanks, Rob [/QUOTE]

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