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<blockquote data-quote="thylantyr" data-source="post: 2647260" data-attributes="member: 560358"><p>Here's how to solve your problem.</p><p></p><p>1. Complete your install using the proper wire and do the wiring upgrade</p><p></p><p>already suggested.</p><p></p><p>2. Use your stock ALT and battery.</p><p></p><p>3. Buy a cheap voltmeter, a voltmeter with a needle, or a digital voltmeter</p><p></p><p>a peak-hold voltage feature. I don't know if cheap DMM has this feature, so</p><p></p><p>maybe just look for a needle voltmeter. {something like the one on the left},</p><p></p><p>they sell small cheap needle meters.</p><p></p><p><a href="http://www.newsandtech.com/issues/2005/07-05/nt/images/22bourlon01.jpg" target="_blank">http://www.newsandtech.com/issues/2005/07-05/nt/images/22bourlon01.jpg</a></p><p></p><p>4. Connect the voltmeter to your battery with car engine running and note</p><p></p><p>the voltage without the amps turned on.</p><p></p><p>5. Now turn on the audio system and crank the tunes loud. If you have needle voltmeter, watch the</p><p></p><p>needle bounce as the voltage fluctuates, make note of the lowest needle bounce and note that voltage drop.</p><p></p><p>If you have a DMM with peak-hold, set it to capture the dips in voltage and it will capture the lowest reading and</p><p></p><p>hold the reading so you can see it.</p><p></p><p>If your voltage was 14V, then with music it dips down under 12V, then</p><p></p><p>you have some real data to work with. You can probably get away with</p><p></p><p>using your audio system if the voltage only dips down to 12V. You can</p><p></p><p>add an extra 'cheap' battery to augment.</p><p></p><p>If your voltage dipped very low, lets say 9V, then you have issues. Your</p><p></p><p>install is punishing your alternator and battery too much. You should buy a HO ALT</p><p></p><p>and have someone make custom brackets and make it fit in your car.</p><p></p><p>That is life in the world of high wattage audio.</p><p></p><p>You can cheat and use a battery array, more is better and you don't</p><p></p><p>need to use $300 batteries. If you bought a single $300 battery in those</p><p></p><p>conditions, it will get abused over time and go bad. You should</p><p></p><p>spend the extra bucks on a custom HO ALT install and then</p><p></p><p>redo the test with your stock battery. Spending $300 on a battery</p><p></p><p>without analyzing your electrical is funny.</p></blockquote><p></p>
[QUOTE="thylantyr, post: 2647260, member: 560358"] Here's how to solve your problem. 1. Complete your install using the proper wire and do the wiring upgrade already suggested. 2. Use your stock ALT and battery. 3. Buy a cheap voltmeter, a voltmeter with a needle, or a digital voltmeter a peak-hold voltage feature. I don't know if cheap DMM has this feature, so maybe just look for a needle voltmeter. {something like the one on the left}, they sell small cheap needle meters. [URL="http://www.newsandtech.com/issues/2005/07-05/nt/images/22bourlon01.jpg"]http://www.newsandtech.com/issues/2005/07-05/nt/images/22bourlon01.jpg[/URL] 4. Connect the voltmeter to your battery with car engine running and note the voltage without the amps turned on. 5. Now turn on the audio system and crank the tunes loud. If you have needle voltmeter, watch the needle bounce as the voltage fluctuates, make note of the lowest needle bounce and note that voltage drop. If you have a DMM with peak-hold, set it to capture the dips in voltage and it will capture the lowest reading and hold the reading so you can see it. If your voltage was 14V, then with music it dips down under 12V, then you have some real data to work with. You can probably get away with using your audio system if the voltage only dips down to 12V. You can add an extra 'cheap' battery to augment. If your voltage dipped very low, lets say 9V, then you have issues. Your install is punishing your alternator and battery too much. You should buy a HO ALT and have someone make custom brackets and make it fit in your car. That is life in the world of high wattage audio. You can cheat and use a battery array, more is better and you don't need to use $300 batteries. If you bought a single $300 battery in those conditions, it will get abused over time and go bad. You should spend the extra bucks on a custom HO ALT install and then redo the test with your stock battery. Spending $300 on a battery without analyzing your electrical is funny. [/QUOTE]
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