Originally Posted by KuttinEdge
...................I am confused
If you were to hook up the mrd-m1005 amp to 2 swr-1021d speakers (or 1041d for that matter) you will most likely blow them in a few minutes depending on how you hook them up. Sure you can hook the speakers up so it shows a 16ohm or even an 8ohm impedance, but what the hell is the point?
The reason that most car speakers and amplifiers operate at 2 or 4 ohms is simply because we are stepping up the voltage in a power supply from 14.4V to a higher voltage usually around 40V so we try and utilize the power. When you are operating a home theater system, you step down the voltage from 120V.
I stated above that you would get a little under 600W RMS per speaker if you hooked them up for a 2 ohm resistance. If the speakers are listed to handle 200-500W RMS power, why would you want to strap on a larger amp????
wft? ok, i dont know how much true information is in this.
1. You're speakers are not going to blow if you hook them up properly, even if you put them on a 1500 watt amp. On the contrary, you can blow your speakers by putting them on a 300 watt amp, if used incorrectly. Speakers blow when the user tries to push either the amp or the speakers too hard (ie. pushing the amp into clipping or giving the speakers too much power).
2. With 2 dual two ohm speakers, you can hook them up to the amp at an optimal resistance, not 16 ohms or 8 ohms, or whatever. You could, but that would just be dumb. You would be using the amp to like 1/4th of its potential.
3. The reason most car audio amplifiers run at 2 or 4 ohms is because a lower resistance means more power. Simple physics, P = V/R, where P is power, V is voltage and R is resistance. If you increase resistance, your going to reduce wattage, except for the special case amplifiers where they are designed to put out the same wattage at two different resistances. We usually don't see amplifiers go lower than 1 or 2 ohms because it is very hard to design an amplifier to work under that stress. Very easy to overheat at a small resistance.
4. This is a two part correction,
a. even if you were giving each speaker 600 watts, I would doubt they couldn't handle the extra 100 watts, and if they couldn't, all you have to do is turn down the gain on the amp, its that simple. Like I said previously, I could put a 1200 watt amp one of the speakers and not blow it, just by setting it up properly.
b. you aren't even giving each speaker 600 watts, there are two speakers so each is recieving 300 watts.