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<blockquote data-quote="thch" data-source="post: 6411451" data-attributes="member: 562032">these are likely based on boost converters or a handful of other designs.&nbsp; an issue is that you&#039;re talking about a HUGE amount of current, making this a bit less accessible.the real issue is that many amplifiers have low-cost &quot;unregulated&quot; power supplies.&nbsp; such supplies have many good features -- low cost, low weight, high efficiency, simple design.&nbsp; The goal of the unregulated supply is to boost the supply voltage (12V) by some factor (like 4) to get 48V.&nbsp; if the battery is 10V, then the output is 40V, ect...so to get the most power from that type of amp, you&#039;d want to run the supply voltage as high as the manufacturer allows.&nbsp; that way the supply voltage is higher.now keep in mind that amps with regulated power supplies largely ignore this.&nbsp; the regulated supply tries to control the output of the power supply.&nbsp; typically to a fixed value.&nbsp; in this example, a regulated power supply could output 48V for the 10V to 16V range.&nbsp; this actually can be annoying because a large load will cause the battery voltage to drop, causing the amp&#039;s regulation to kick in and try to draw more current.&nbsp; this in turns causes the battery voltage to drop a bit further.some amps may dynamically change the power supply voltage, either as a means of protection, or to provide a constant power capability when used with different loads.&nbsp; this feature is the I in JL&#039;s RIPS.</blockquote>

[QUOTE="thch, post: 6411451, member: 562032"] these are likely based on boost converters or a handful of other designs. an issue is that you're talking about a HUGE amount of current, making this a bit less accessible. the real issue is that many amplifiers have low-cost "unregulated" power supplies. such supplies have many good features -- low cost, low weight, high efficiency, simple design. The goal of the unregulated supply is to boost the supply voltage (12V) by some factor (like 4) to get 48V. if the battery is 10V, then the output is 40V, ect... so to get the most power from that type of amp, you'd want to run the supply voltage as high as the manufacturer allows. that way the supply voltage is higher. now keep in mind that amps with regulated power supplies largely ignore this. the regulated supply tries to control the output of the power supply. typically to a fixed value. in this example, a regulated power supply could output 48V for the 10V to 16V range. this actually can be annoying because a large load will cause the battery voltage to drop, causing the amp's regulation to kick in and try to draw more current. this in turns causes the battery voltage to drop a bit further. some amps may dynamically change the power supply voltage, either as a means of protection, or to provide a constant power capability when used with different loads. this feature is the I in JL's RIPS. [/QUOTE]

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