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<blockquote data-quote="20 hz bass machine" data-source="post: 8692445" data-attributes="member: 678131">I just finished a build in my 2002 gmc yukon xl. In total I&#039;m pushing close to 3000 watts and for the moment I&#039;m running on the stock 130 amp alternator. I&#039;m already in the process of getting a 370 billet from Mechman as I&#039;m well aware I need more output. For the first few days Ive been listening to the system with the stock alt and It&#039;s been holding it&#039;s own. Last night I was bumping with friends for an extended period of time (close to an hour) at the end of the hour my lights started to dim randomly (not to the bass) and my voltage plummeted. I shut everything off and my voltage just kept going down. I assumed at the time that my alt took a shit which didn&#039;t surprise me. By the time I got home though my voltage was back to normal and everything seemed to be ok. I&#039;m pretty sure I just drained the battery significantly after such a long bump session but I&#039;ve also never delt with a bad alternator before. Have any of you had an alternator go bad? Does this sound like alt that&#039;s about to go? Obviously I have a high output on the way but before it arrives I&#039;m going snowboarding and I dont want to break down going up the mountain. I&#039;m going with a co worker who is not a fan of the loud bass so I&#039;m not trying to let it rip all the way up. What are your thoughts? Am I fine and just drained the battery? Is my alternator on the verge of blowing? I was considering getting a stock alt to use for now/down the road if I have problems with my high output I can use it while waiting for things to get repaired.</blockquote>

[QUOTE="20 hz bass machine, post: 8692445, member: 678131"] I just finished a build in my 2002 gmc yukon xl. In total I'm pushing close to 3000 watts and for the moment I'm running on the stock 130 amp alternator. I'm already in the process of getting a 370 billet from Mechman as I'm well aware I need more output. For the first few days Ive been listening to the system with the stock alt and It's been holding it's own. Last night I was bumping with friends for an extended period of time (close to an hour) at the end of the hour my lights started to dim randomly (not to the bass) and my voltage plummeted. I shut everything off and my voltage just kept going down. I assumed at the time that my alt took a shit which didn't surprise me. By the time I got home though my voltage was back to normal and everything seemed to be ok. I'm pretty sure I just drained the battery significantly after such a long bump session but I've also never delt with a bad alternator before. Have any of you had an alternator go bad? Does this sound like alt that's about to go? Obviously I have a high output on the way but before it arrives I'm going snowboarding and I dont want to break down going up the mountain. I'm going with a co worker who is not a fan of the loud bass so I'm not trying to let it rip all the way up. What are your thoughts? Am I fine and just drained the battery? Is my alternator on the verge of blowing? I was considering getting a stock alt to use for now/down the road if I have problems with my high output I can use it while waiting for things to get repaired. [/QUOTE]

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