Why not PC speakers?

**RedGTiVR6** · 03-20-2006, 06:32 PM

he won't listen to reason, only what he wants to do....which is why we are patiently waiting to see if he tries it

**mbuchman** · 03-20-2006, 06:36 PM

Originally Posted by jollyeskimo

Make sure to carefully read the specs of the inverter that you plan on getting. 400W on the package doesn't necessairly mean that it can handle a 400W load....usually only 400W peak.

If it plugs into a cigarette ligher in the car, then if you do the math, you will be let down. 15 amps (what most cigarette lighters are fused at) * 14.6 volts (about the max voltage you will have) = 219 watts. Now lets be nice and say 80% efficiency, that gives us 175.2 watts. So you bring up a good often overlooked point, their is no physical way to get what those cheap inverters say they can put out.

I had either a 300 or 400 watt inverter which plugs into the cigarette lighter (and just as described above, this is an impossible to achieve number), went to run my laptop, and it could not power my supply (I have a 135 watt power brick for my laptop). Now I know according to the above math, it looks like anything in the 60% or more efficiency range should easily drive this, but if you look at the input, it says 100-240v @ 1.5 amps. So using our 80% efficiency, you do the division of 175.2/110, and you see it only puts out 1.59 amps, which assumes 80% efficiency at 14.6 volts... So you can see how these inverters do not put out nearly what they are rated for, and you do not want to use even half of the rated power.

-Matt

**Genesisfactor** · 03-20-2006, 08:03 PM

gah, just close the thread of let him be for a while; he got his answer 4 pages ago. I say, let's let him expereiment, get it out of his system, and then have him post his results.

**oddx** · 03-21-2006, 10:20 PM

lol car speakers... can run 800 bucks a pop for the front pair... i dont see how a set of 500$ 5.1's would compare to that... my system was around 5g's.... your system is 5000/10....... what are you on?? computer speakers as good as a nice set of morels!!!!!!!!!!

no!

**RedGTiVR6** · 03-22-2006, 09:13 AM

the guy simply hasn't been exposed to much in the real world

because quite honnestly, there's a LOT of car audio speakers that would STOMP computer speakers...Berylliums included

**LagunaICE** · 03-22-2006, 09:50 AM

Boy I can not believe the topic is still actually beeing discussed!!!

**rudeboymcc** · 03-22-2006, 09:59 AM

Noone mention that house speakers tend to have a higher resistance, whereas cars have nroamlly 4ohms or less.

and since when can car speakers get wet?

**shrinkydinx** · 03-22-2006, 10:01 AM

Originally Posted by checksum

well, that is more of a space issue there, house stereo are too big. But computer speakers are as small as car speakers, just take them out of their enclosure and you have a set of nice speakers.

the enclosure is the whole reason they sound "good" for only $200

**RedGTiVR6** · 03-22-2006, 10:18 AM

Originally Posted by rudeboymcc

Noone mention that house speakers tend to have a higher resistance, whereas cars have nroamlly 4ohms or less.

and since when can car speakers get wet?

they are designed to handle the elements better, as in a little moisture here and there

while home and PC speakers generally can't to the same extent

**Mandos** · 03-22-2006, 11:26 AM

Originally Posted by Red GTi VR6

they are designed to handle the elements better, as in a little moisture here and there

while home and PC speakers generally can't to the same extent

Treated paper cone vs. straight paper cone. You get a non-treated paper cone wet...well...there'll be some problems.

You get a treated cone wet, water will generally just drip off.

Now, don't submerge either speaker...bad idea