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<blockquote data-quote="shizzzon" data-source="post: 8331986" data-attributes="member: 590338">Amps that are not efficient kill drivers?That is incorrect.Only 2 things kill a driver-Mechanical or thermal failure.Should you underpower your subs?Do you always listen to everyone&#039;s stereo at full blast?Have you ever noticed turning DOWN the volume doesn&#039;t &quot;kill drivers&quot;?That&#039;s a pure example of &quot;underpowering&quot; that will never cause failure.Voltage drop causes the following-DC voltage will obviously be less.The available headroom the amplifier has will lower with less voltage resulting in output able to clip sooner if volume level is retained under lower DC voltage.Because of this, the voltage rail will be unable to output at the same designated AC output and will drop both voltage and current.&nbsp; Same result as turning it down, but without losing it&#039;s headroom.Efficiency also drops but no where near as much as wiring lower and lower.If regulated power supply is used, amperage draw will shoot up to maintain power output.&nbsp; Your amplifier is not regulated.If low voltage is always maintained, the cycle life of the battery(ies) being used will also shorten and will take longer to charge if only using an alternator.Continued use in this scenario can result in alternator failure if your alternator is not equipped with onboard protection.Intentionally driving battery(ies) in this state is best used using LiFePO4 technology.</blockquote>

[QUOTE="shizzzon, post: 8331986, member: 590338"] Amps that are not efficient kill drivers? That is incorrect. Only 2 things kill a driver- Mechanical or thermal failure. Should you underpower your subs? Do you always listen to everyone's stereo at full blast? Have you ever noticed turning DOWN the volume doesn't "kill drivers"? That's a pure example of "underpowering" that will never cause failure. Voltage drop causes the following- DC voltage will obviously be less. The available headroom the amplifier has will lower with less voltage resulting in output able to clip sooner if volume level is retained under lower DC voltage. Because of this, the voltage rail will be unable to output at the same designated AC output and will drop both voltage and current. Same result as turning it down, but without losing it's headroom. Efficiency also drops but no where near as much as wiring lower and lower. If regulated power supply is used, amperage draw will shoot up to maintain power output. Your amplifier is not regulated. If low voltage is always maintained, the cycle life of the battery(ies) being used will also shorten and will take longer to charge if only using an alternator. Continued use in this scenario can result in alternator failure if your alternator is not equipped with onboard protection. Intentionally driving battery(ies) in this state is best used using LiFePO4 technology. [/QUOTE]

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