Menu
Forum
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Gallery
New media
New comments
Search media
Members
Registered members
Current visitors
Classifieds Member Feedback
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Log in / Register
Forum
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
Log in / Join
What’s new
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Menu
Reply to thread
Forum
Car Audio Discussion
Amplifiers
Amp draw and effeciency
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="CBFryman2" data-source="post: 2209244" data-attributes="member: 565445"><p>DMM will not tell you how much power you where producing. //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif</p><p></p><p>Theoretical amp efficency of 100%, you have the voltage rail to 45v and impeadance rise to 10ohm...you are only going to be producing 202w and the amp will only be drawing ~14a with 14.4v input.</p><p></p><p>Also, Fuses are technically rated to wattage with an instantanious blow amperaged rated at three times what the voltage they are sapposed to be used for.</p><p></p><p>ie, instantanious blow amperage on a 12v fuse will be rated at 36v (in most casses). So if the fuse is rated to blow at 50a, it is likely rated at 36v. That is 150a before it will blow instantly with 12v. Above 50a will be a slow process before it blows. Or it may not blow at all as the current may be with in tollerance. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p><p></p><p>And all that is one of the reasons why MECA = Ghey. No way to regulate it unless you make everyone use the same exact fuse...and then you will have to have a fuse with very tight tollerances for it to be "Fair." Tight tollerances on something like fuses = $$$$</p><p></p><p>dB Drag FTW.</p></blockquote><p></p>
[QUOTE="CBFryman2, post: 2209244, member: 565445"] DMM will not tell you how much power you where producing. [IMG]//content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif[/IMG] Theoretical amp efficency of 100%, you have the voltage rail to 45v and impeadance rise to 10ohm...you are only going to be producing 202w and the amp will only be drawing ~14a with 14.4v input. Also, Fuses are technically rated to wattage with an instantanious blow amperaged rated at three times what the voltage they are sapposed to be used for. ie, instantanious blow amperage on a 12v fuse will be rated at 36v (in most casses). So if the fuse is rated to blow at 50a, it is likely rated at 36v. That is 150a before it will blow instantly with 12v. Above 50a will be a slow process before it blows. Or it may not blow at all as the current may be with in tollerance. [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] And all that is one of the reasons why MECA = Ghey. No way to regulate it unless you make everyone use the same exact fuse...and then you will have to have a fuse with very tight tollerances for it to be "Fair." Tight tollerances on something like fuses = $$$$ dB Drag FTW. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
Amplifiers
Amp draw and effeciency
Top
Menu
What's new
Forum list