I have on Infinity Reference 1242w 12" sub. It is a dual 4 ohm model. However, my box is built for 2 subs and I have yet to order the other sub. Crutchfield has a 2 for one special on the 1240w, which is a single 4 ohm version. I want to order the 2 1240w's.
However, my amp is makes 600watts rms @4 ohms, and that would make the subs see 300 watts a piece, if the amps sees a 4 ohm load. Can I use a 4 ohm resistor in series with each woofer, and then parellell the woofers together to make a 4 ohm load? Why or why not.
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There are 3 kinds of people in the world, those who can count and those who can't
Sure you can but any gain in power is wasted at the resistor. So if you wire the resistor in parallel or series to a sub, the power would still be spread across the combined load evenly, resulting in a 50% power loss, 50% to the speaker, 50% to the resistor. You have gained absolutely nothing by doing this. A deal is always nice but in this case, buy the right sub as the deal is the wrong deal for you.
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Top Secret, I can tell you but then my wife will kill me.
Good point, I'll probably look around to see if I can find some.
However, my amp is a 2-channel, producing 200 wattsx2 at 4-ohm. If I go from 300 to 200 watts, i will have about a 1-2db drop right. Do you think I would ever notice the difference (especially $100 difference)
Thanks for the help
Jacob
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There are 3 kinds of people in the world, those who can count and those who can't
I doubt you'll notice the difference.
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My ex once told me I have a perfect face for radio.