I'm going to break this done for you one last time. First, I will state that you do not really understand as much as you would like to think you do. Second, we can all see this and you're not fooling anybody.
you just told me what i said was wrong, and then said exacly what i said.... i didn't mean that i don't know what inductance means... i said i don't know what the inductance of the subs is...
Type what you mean next time. If you know what inductance is, don't type this: "i think it was pretty safe to say (without knowing wat inductance is) that..." That is what you typed but you edited to make yourself seem more educated than you really are.
besides that you cannot drop to your DC resistance unless your inductance is ZERO
Let us read something I have already typed:
"In a DC environment, your current is constant (hence the Direct Current) and thus the part of the voice coil that is acting like an inductor is now acting like a short (think of the resistance and inductance of the sub as if they're in series with each other). If the inductance is a short, you can say that its value of resistance is 0."
Yep, inductance is equal to 0 in DC, just like helotaxi also said.
and then your speaker wouldn't be doin much, so the fact that that dc resistance is what your impedance can drop to is flat wrong...
I never stated this. I DID state multiple times that your amp will never see a load lower than your DCR. Read and understand; don't put words in my mouth.
i KNOW this much to be true or at least erroneous... because the sum of the inductance and the resistance is not equal to the DCR value as you said it is...
In a DC environment, it will be. This is the context I was talking about. When you're working with a DC source, inductance will be 0 so DCR + 0 = impedance = DCR. Just like 1 + 0 = 1. Read in context and understand.
in fact the DCR is the resistance... so DCR+inductance= nominal impedance
And that is similar to what I said here:
"With this flux, we're going to have inductance added to the DCR . . . So we now have the inductance (which will vary over frequency) added with the DC resistance of the coil. This value, over the usable range of the sub while free-air, will be roughly 2 ohms per voice coil."
The problem is that impedance is going to change because inductance changes over frequency and it will change based on the environment the sub is in. This value of inductance will only increase though and will never become negative in a sub. Also, it's not equal to the nominal impedance as you will read here later.
which IS the "supposed" lowest impedance of the sub...
Nominal does not equal lowest... sorry. That value is also taken while free-air. When you load down the sub in an enclosure, your nominal impedance will be different from it's rated value; this new value will almost always be higher.
also that "imaginary number in the inductance is simply a algebraic formula used to avoid the value becomeing 0 because it is impossible for the inductance to become ZERO... so yes techically nominal impedance is definded as....DCR+ (x)i= nominal impedance...
Actually, that "i" value is used to describe the phase angle of the impedance when in polar form. "i" is used as the 90* phase angle portion of the impedance. Like I have said before, impedance is the summation of the purely resistive load and purely inductive load. This is not a normal sum like you would think it to be though. Because we have an imaginary value, we switch to a polar coordinate system instead of our standard geometric system. This form of addition is done by taking the square root of the sum of each value squared. This will give you the magnitude of the impedance. The phase angle of the impedance is going to be the tan^1 of the imaginary value over the resistive (real) value.
Example:
Something has a DCR of 2ohms and an inductance of 2i ohms at some random frequency. To find the actual impedance, we solve this in our calculator: sqrt[2^2 (real value) + 2^2 (imaginary value)]. This is equal to the sqrt(8) which equals ~2.83ohms. This is the magnitude or total value of resistance. Now, the phase angle is found by taking the tan^-1(2/2) which is equal to 45*.
furthermore another important thing to take into mind is that ratings on sub's DCR are permited to be -20% by industry standards so if the case was that even one of my subs was droping to that percentage, or if all 4 were droping to even 5% that could have been the source of shut down ANOTHER important fact is that a 1000/1 is designed to be nominal at 1.5 to 4 OHMs it accomplishes this by adjusting the circuitry automatically "every time the amp is turned on". this means if my amp read a 2 ohm lead when first turned on a .5 ohm drop would make it cut off because the amp is adjusted to play nominal 2 ohms..
If your amp was worth a ****, it will handle a load slightly lower than it is rated for. I have a shitty profile amp from the early 90s that can handle a 2 ohm load bridged for hours and it is fine. It sounds like you have wired your amp to .5 ohms. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
so i'm sorry to argue if thats what you take this as but i know for a fact that DCR is ONLY the resistance of the voice coil and leads and stuff, nothing to do with inductance but add the 2 together to get nominal impedance.
I'm not taking it as arguing but rather you trying to defend your ignorance. Trust me, you're failing hard at this. You're young so I wouldn't expect you to know this stuff. It's honorable that you're trying but there comes a point when you are not fooling anybody and you just need to stop. You are way past this point and you're too far over your head.
Oh, and when you sum DCR and inductance, you don't get the nominal impedance but the magnitude and phase of the impedance at that frequency. There IS a difference but again, you don't understand it.
