Quote:
Originally Posted by nitrous  Gurujis, I still don't understand the concept of ohms in subwoofers.
Can someone explain in layman terms? |
ohm's law is the relationship between power, current, volts, and resistance. ohms as commonly used is a unit of measurement for electrical resistance. wiki it... you won't understand until you know what the other terms mean.
for layman's use... if an amp makes 100w @ 4 ohms, and is 2 ohm stable, it will usually be rated for 200w @ 2 ohms. (lesser the resistance, more the power) so a 2 ohm subwoofer connected will give more power.. 200w... whereas a 4 ohm subwoofer will give only 100w. and a 4 ohm DVC with coils connected in parallel will be at 2 ohms and will give 200w.
if you have multiple woofers and amps that go low upto 1 ohm... you can play around. but one should also consider the specs of the subwoofer... they vary at different ohms. and not all amps can drive such low loads of resistance. typically an amp that's 1 ohm stable or 1/2 ohm stable will cost much much more. however it will have nearly twice to 4 times the sound output and also drain the battery much much less. say if the above amp were 1 ohm stable... it would probably be rated 400w @ 1 ohm.