Car Audio HELP!!! Does this sound right?? Speaker/Amp hookup:?

Question

An amp doubles your wattage when u drop the omhs, but the subwoofer can take less wattage when run at an lower omhs. if there is a 1000 watt 4 ohm voice coil, then when wired to 2 ohms, it can take 500 omhs, when wired down to 1 ohm, it can only take 250 watts @ 1 ohm. A 500 rms wattage sub, with two 4 ohm voice coils, has : two 250 watt 4 ohm voice coils, when wired to 2 ohms, each coil can only handle 125 watts, when dropped to 1 ohm, each coil can only handle 62.5 watts.


I found this somewhere on the the net....my problem is I have 3 SVC 4 ohm subs wired as a 1.34 ohm load (parallel i think)..and I have a 1 ohm stable amp. The question is: If my subs are rated at 400 watts rms and they are 4 ohm SVC, will they still be rated at 400 watts rms even though they will be wired as a 1.34 ohm load?? I thought that if a sub is rated @ 400 watts rms, it doesn't matter how many ohms the load is that you're running to the amp, the sub is STILL 400 watts RMS..

Answer 1

When wiring three 4 ohm subs yes you get 1.34 ohm impedance, however the power handling of all subs gets added together for a total of 1200 watts RMS.

Answer 2

Your question doesn't make sense because you don't understand how impedance works in a speaker.

You cannot change a voice coil's impedance rating. A 4-ohm voice coil is a 4-ohm voice coil; there's no way to change it. If you combine it with another 4-ohm voice coil, the two coils together may have a total impedance of 2 ohms; however, each voice coil's individual impedance--and its power handling capacity--remains unchanged.

Here's an analogy that might help you understand how it works. Pretend the amp is a tank full of water, and the subwoofer is a tube draining water out of the tank. The amount of water that's draining out of the tank is the "power" that the amp is producing. Let's say you have one tube (subwoofer) that drains 1 gallon every minute. That's the maximum drain (power) that you can get through the tube, because the size of the tube (impedance) prevents water from flowing through very fast. If you add another tube, now the water flows out of the tank twice as fast. Even though more water is being drawn out of the tank, though, the first tube is still only getting one gallon a minute, because the size of the tube doesn't change. Only the amount of water flowing from the tank changes, because it's sending it out through more tubes.

Answer 3

An amp will produce 500wrms @4Ohms, or 1000wrms @2Ohms, or 2000wrms @1Ohm, or 4000wrms @.5Ohm, or 8000wrms @.25Ohm, etc...
Speakers' impedance (how many ohms, or, resistance) and power handling is always the same.
If you wire 2 4Ohm subs to 1 channel, the amp will 'see' a load of 2Ohms as they (the subs), put together (parallel), have 1/2 the resistance of 1 4Ohm sub, which is 2Ohms.
Good Luck!