how do you convert volts into watts

[nauc 10+ year member]

i want to know how many watts my amp is putting out based on the voltage

is there a way to do this

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[Loudrango112 10+ year member]

Sqaure root (wattage x Impediance)

If you know the final load... but not the wattage... just plug in the numbers... and figure it out as an equation.

 

[JAZN 5,000+ posts]

watts = amps x volts

google you dork.

 

[myvanpounds 10+ year member]

watts = voltage squared divided by ohms

 

[DBfan187 5,000+ posts]

P=i^2*r=e^2/r

 

[JimJ 5,000+ posts]

The actual number is going to be less, because that's assuming 100% efficiency between the two. Nothing in the real world is perfect, so even a Class D amp is going to actually produce less power than calculated.

 

[nauc 10+ year member]

that means i feeding my type e 1200 watts

70volts, 4 ohms

 

[SmokeAlot 10+ year member]

i believe its e=mc2

 

[myvanpounds 10+ year member]

that means i feeding my type e 1200 watts
1200W=(70vx4r)sqrt

did you measure 70volts at the amp with the speakers unhooked? and I'm taking its a 4 Ohm load

 

[nauc 10+ year member]

did you measure 70volts at the amp with the speakers unhooked? and I'm taking its a 4 Ohm load

yeah, using a 40hz tone, deck 25 out of 35

 

[myvanpounds 10+ year member]

yeah, using a 40hz tone, deck 25 out of 35

thats a helluva lotta watts to be feeding a type-e, might need to upgrade soon

 

[Decipha 10+ year member]

watts x ohm load [sq rt]= volts

ex: sq rt 1200 x 4 = 69.28

so yep, 70 volts should be about 1200 watts

 

[nauc 10+ year member]

thats a helluva lotta watts to be feeding a type-e, might need to upgrade soon

i had a top shop set my gains, they do $30,000 installs, seems to be fine, been running it this way for a month or 2

just seems crazy

 

[myvanpounds 10+ year member]

i had a top shop set my gains, they do $30,000 installs, seems to be fine, been running it this way for a month or 2
just seems crazy

a top shop or DIY'er can set the gains right so your amp isn't clipping. The problem is going to be damaging the voice coil latter down the road. because your feeding the sub more than its rated for thermaly its causing the voice coil to heat up

 

[JAZN 5,000+ posts]

i had a top shop set my gains, they do $30,000 installs, seems to be fine, been running it this way for a month or 2
just seems crazy

or they could be setting it high so you can blow your shit and come back and upgrade.