well... im farthest thing from a noob in audio realated things..... but there is a subject that i really didnt get too much into


simple question.... scince you get more power in lower ohms, why dont all companies use lower ohms like 2?

do you get a better signal or sound quality with higher ohms? or what?



for example, im heavily into live sound and 90% of amps and speakers are rated at 8 ohms.... why dont they all run in 4 or 2 ohms? what are the pros? what are the cons?

 

I'm pretty sure that the lower the resistance the hotter the amp will run, meaning it needs better cooling and potentially shorter life span...but that's just my theory.

 

most home audio amps are 8 or 4 ohms though, most car audio amps are 4 ohms and can be wired to a 1ohm and a 2ohm depending on the ohm of the speaker or sub woofer. The higher the ohm the less current the amp will draw as well, im pretty sure the higher the ohm the more clear the signal will be, this is why most home audio speakers are 8 ohm. This is a good read and should answer your question:
http://sound.westhost.com/impedanc.htm

 

You guys are right. Remember that current = voltage / resistance. Our cars run at a constant voltage, so if you lower the resistance, the current will go up. The more current, the more heat.

 

therefore.... rotary = -309248 ohms :P haha