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long ground to battery
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<blockquote data-quote="forbidden" data-source="post: 391207" data-attributes="member: 552189"><p>Not really, all it shows is differing opinions. Fact is electricity is an algebra equation, what you do to one side you must do to the other. Helotaxi is bang on with his recommendations, more people need to be made aware or the proper way to do things vs. the assumed proper way of doing things. He asked if anyone had checked the resistance on the ground return, many installers do not infact do this when they should be, especially with the plethora of crappy power supplies put into amplifiers these days. When a person is faced with a high resistance on a ground return that cannot be rectified with upgraded grounds etc (ie the big 3), and it has been proven fact that the resistance is higher than .5 ohm, it is necessary for the amp to be grounded to the battery. This has nothing to do with the amount of metal used in the ground plain, the type of metal used in the ground plain or the price of rice in china, it has to do with the resistance in the ground plain, which helotaxi rightfully popinted out, but some people do not understand.</p><p></p><p>Todays vehicles are not 16 gauge solid steel , bolted to a chassis and is heavier than any vehicle today. Today's vehicles are a combination of thin sheet metal full of impurities (scratch the paint and see coca-cola underneath), glued together unibody panels and crappy tack welds, coupled with small ground wires from battery to chassis.</p><p></p><p>If one does not understand resistance on a ground return they had better find out what it is, how it affects an amplifier and it's outpout and how to correct it. Even I had no idea about this until 5 years ago after a long string of Rockford amp power supply failures. Rockford successfully duplicated the problem at their facility and recommended to me on how to solve the problem. Imagine my surpise when I checked exactly what they said to and correct the problem, I have not seen this customer again in almost 5 years now. I also double checked alot more of my previous installs for the same problem and now check every install, it's called being thorough for the paying customer.</p></blockquote><p></p>
[QUOTE="forbidden, post: 391207, member: 552189"] Not really, all it shows is differing opinions. Fact is electricity is an algebra equation, what you do to one side you must do to the other. Helotaxi is bang on with his recommendations, more people need to be made aware or the proper way to do things vs. the assumed proper way of doing things. He asked if anyone had checked the resistance on the ground return, many installers do not infact do this when they should be, especially with the plethora of crappy power supplies put into amplifiers these days. When a person is faced with a high resistance on a ground return that cannot be rectified with upgraded grounds etc (ie the big 3), and it has been proven fact that the resistance is higher than .5 ohm, it is necessary for the amp to be grounded to the battery. This has nothing to do with the amount of metal used in the ground plain, the type of metal used in the ground plain or the price of rice in china, it has to do with the resistance in the ground plain, which helotaxi rightfully popinted out, but some people do not understand. Todays vehicles are not 16 gauge solid steel , bolted to a chassis and is heavier than any vehicle today. Today's vehicles are a combination of thin sheet metal full of impurities (scratch the paint and see coca-cola underneath), glued together unibody panels and crappy tack welds, coupled with small ground wires from battery to chassis. If one does not understand resistance on a ground return they had better find out what it is, how it affects an amplifier and it's outpout and how to correct it. Even I had no idea about this until 5 years ago after a long string of Rockford amp power supply failures. Rockford successfully duplicated the problem at their facility and recommended to me on how to solve the problem. Imagine my surpise when I checked exactly what they said to and correct the problem, I have not seen this customer again in almost 5 years now. I also double checked alot more of my previous installs for the same problem and now check every install, it's called being thorough for the paying customer. [/QUOTE]
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