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Subs go crazy after car shuts off
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<blockquote data-quote="DRBOOM" data-source="post: 8676058" data-attributes="member: 676005"><p>I say its probably the Hifonics amp having poor ground loop as they are not very good amps to have unfortunately. The noise or whatever you are experiencing is a result of sudden voltage drop causing a ground loop.</p><p></p><p>I suggest you do this...</p><p></p><ul> <li data-xf-list-type="ul">take your Hifonics amp out and get another amp and hook it up to your subwoofer and give it a run.<br /> <br /> </li> <li data-xf-list-type="ul">Turn the ignition and run the engine, turn the stereo on play a track then turn it off;<br /> <br /> </li> <li data-xf-list-type="ul">Turn the engine off and repeat the process;<br /> </li> </ul><p>If the issue is gone, then most likely its the Hifonics amps, they are not as good as the old Hifonics 'power from the Gods' era, from memory, they were made by Zed.</p><p></p><p>My money is on your amp mate!</p><p></p><p>If you have good power/ ground/ remote, it should not do this, check your ground as well before you take the Hifonics amp out. Use a multimeter to get resistance and voltage reading. Remember, power travels from negative, to positive hence the 12v neg ground term. :graduate:</p></blockquote><p></p>
[QUOTE="DRBOOM, post: 8676058, member: 676005"] I say its probably the Hifonics amp having poor ground loop as they are not very good amps to have unfortunately. The noise or whatever you are experiencing is a result of sudden voltage drop causing a ground loop. I suggest you do this... [LIST][*]take your Hifonics amp out and get another amp and hook it up to your subwoofer and give it a run. [*]Turn the ignition and run the engine, turn the stereo on play a track then turn it off; [*]Turn the engine off and repeat the process; [/LIST] If the issue is gone, then most likely its the Hifonics amps, they are not as good as the old Hifonics 'power from the Gods' era, from memory, they were made by Zed. My money is on your amp mate! If you have good power/ ground/ remote, it should not do this, check your ground as well before you take the Hifonics amp out. Use a multimeter to get resistance and voltage reading. Remember, power travels from negative, to positive hence the 12v neg ground term. :graduate: [/QUOTE]
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Subs go crazy after car shuts off
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