Menu
Forum
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Car Audio Discussion
General Car Audio
Car Audio Build Logs
Car Audio Equipment
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Help
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Car Audio Classifieds
Car Audio Wanted
Classifieds Member Feedback
Gallery
New media
New comments
Search media
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Test
Forum
Search
Search titles only
Search titles only
Log in / Join
Search
Search titles only
Search titles only
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Menu
Reply to thread
Forum
Car Audio Discussion
General Car Audio
how to use amp fuses to tell actual output?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="gstokes" data-source="post: 8371757" data-attributes="member: 660947"><p>14 volts is a bit high, try using 13.8 and you end up with 1104 watts, now account for amplifier efficiency (class A, class B, etc.) and Voltage drop and you will have a more accurate representation of amplifier output..</p><p></p><p>It's not possible to make more than 1104 watts unless you increase source voltage or fuse rating, if the amplifier tried to make power then 1104 watts with a 13.8 volt source and 2 x 40 amp fuses what's going to happen, it'll blow the fuses because it can't draw more current than the fuses are rated for..</p><p></p><p>When calculating Power aka Wattage, Current and Voltage are inversely proportional, when voltage increases current decreases, when current increases voltage decreases..</p><p></p><p>Let's increase source voltage to 16 volts using the same 2 x 40 amp fuses, available wattage increased to 1204 watts..</p><p></p><p>Let's increase fuse rating to 2 x 50 amp fuses with the original 13.8 volt source, amplifier wattage increases to 1380..</p><p></p><p>Just remember to factor in amplifier class (efficiency rating) and voltage drop and you'll be fine..</p><p></p><p>Here is some good reading material&gt; <a href="http://www.sengpielaudio.com/calculator-ohm.htm" target="_blank">Voltage current resistance and electric power general basic electrical formulas mathematical calculations calculator formula for power calculating energy work equation power law watts understandimg general electrical pie chart electricity calculation</a></p><p></p><p>Barry from Easy Way Electronics has more info &gt; <a href="http://www.513electronics.com/how-to-size-your-audio-system-to-your-electrical-system/" target="_blank">http://www.513electronics.com/how-to-size-your-audio-system-to-your-electrical-system/</a></p></blockquote><p></p>
[QUOTE="gstokes, post: 8371757, member: 660947"] 14 volts is a bit high, try using 13.8 and you end up with 1104 watts, now account for amplifier efficiency (class A, class B, etc.) and Voltage drop and you will have a more accurate representation of amplifier output.. It's not possible to make more than 1104 watts unless you increase source voltage or fuse rating, if the amplifier tried to make power then 1104 watts with a 13.8 volt source and 2 x 40 amp fuses what's going to happen, it'll blow the fuses because it can't draw more current than the fuses are rated for.. When calculating Power aka Wattage, Current and Voltage are inversely proportional, when voltage increases current decreases, when current increases voltage decreases.. Let's increase source voltage to 16 volts using the same 2 x 40 amp fuses, available wattage increased to 1204 watts.. Let's increase fuse rating to 2 x 50 amp fuses with the original 13.8 volt source, amplifier wattage increases to 1380.. Just remember to factor in amplifier class (efficiency rating) and voltage drop and you'll be fine.. Here is some good reading material> [URL="http://www.sengpielaudio.com/calculator-ohm.htm"]Voltage current resistance and electric power general basic electrical formulas mathematical calculations calculator formula for power calculating energy work equation power law watts understandimg general electrical pie chart electricity calculation[/URL] Barry from Easy Way Electronics has more info > [URL="http://www.513electronics.com/how-to-size-your-audio-system-to-your-electrical-system/"]http://www.513electronics.com/how-to-size-your-audio-system-to-your-electrical-system/[/URL] [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
General Car Audio
how to use amp fuses to tell actual output?
Top
Menu
Home
Refresh